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Apart from considering the prices and quality of fake grass, you need to consider factors like ground preparation, fitting and whether the installer is professionally trained or not. Polyethylene yarn types are generally softer and hence better than the polypropylene any nylon yarns. Comparing the prices of artificial grass is another important consideration. Installing fake grass in the UK or elsewhere is a wise decision, but finding the best and most suitable type is difficult. You can also evaluate the different colours and how appealing they can look on your garden.
Besides price and quality consider single phase smart meter buying it from a reputed dealer. There are certain important points that you need to consider when you choose fake grass for garden.When you need to install artificial grass in your garden, patio or lawn, you should know how to select the best types available in the market.uk/. Get the Right Advice: You need to keep in mind that synthetic grass remains green in the winter season also. Request for a sample. Most important of all, look at the origin of grass.artificialgrassgb.co. What Would be the Right Type? It largely depends on your personal preference and the position of your garden.
You should always remember that the impact of colour is not as strong in a small area as it is on a large surface. If this is a problem you should opt for a bright green type of turfs and get an expert advice How Can You Compare the Different Types of Fake Grass? To use a fake grass is a smart choice, but people do not know how to compare the different types of the different brands. It the turf is from an unknown source you should ask the testing reports about its sustainability.
If you have a shady garden, you can select a light-coloured artificial grass to make your garden look bright. So, if you have natural little real green plants, the turf may look unnatural. You need to check the specification of the carpets and ensure that you compare the various types available in terms of fibre weight per square meter, for quality of carpet backing, etc. https://www. Make sure that you buy a trusted brand only.
Besides price and quality consider single phase smart meter buying it from a reputed dealer. There are certain important points that you need to consider when you choose fake grass for garden.When you need to install artificial grass in your garden, patio or lawn, you should know how to select the best types available in the market.uk/. Get the Right Advice: You need to keep in mind that synthetic grass remains green in the winter season also. Request for a sample. Most important of all, look at the origin of grass.artificialgrassgb.co. What Would be the Right Type? It largely depends on your personal preference and the position of your garden.
You should always remember that the impact of colour is not as strong in a small area as it is on a large surface. If this is a problem you should opt for a bright green type of turfs and get an expert advice How Can You Compare the Different Types of Fake Grass? To use a fake grass is a smart choice, but people do not know how to compare the different types of the different brands. It the turf is from an unknown source you should ask the testing reports about its sustainability.
If you have a shady garden, you can select a light-coloured artificial grass to make your garden look bright. So, if you have natural little real green plants, the turf may look unnatural. You need to check the specification of the carpets and ensure that you compare the various types available in terms of fibre weight per square meter, for quality of carpet backing, etc. https://www. Make sure that you buy a trusted brand only.
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It is also possible to use another kind of solar panel to generate hot water, not electricity, from sunlight for heating or for hot water. Installation must be carried out by experts. If it is exported to the grid it attracts an extra payment in the form of the &39;export tariff&39;. An inverted must be fitted which converts the electricity from DC to AC which is the form of electricity required by household electrical appliances, usually in the loft for roof mounted panels. Solar PV works well all over the UK, as modern panels are extremely efficient even in low light intensities.
Finally, a generation meter in fitted which measures the amount of electricity produced and therefore the payments that your electricity supplier should give you under the feed-in-tariff. Despite highly publicised reductions in the feed-in-tariff rate there is still money to be made from having Solar Panels; there is a glut of installations companies fitting solar panels, particularly around London. Even when the sun is not shining directly on the panels they still will generate electricity, however the more light the better. Firstly, for safety and to ensure that the work is done correctly. As an example a typical (4kWp) solar panels installation in Kent now cost less than 5,000!. Solar electricity panels are relatively straight forward to fit:
They are light and China smart meter Manufacturers can be fitted by a competent roofer. Competition is intense and bargains for fitting solar PV can be found from Essex and Kent to Wiltshire and beyond. London is also a good place for Solar panels being one of the sunniest cities in the UK. These are referred to as Solar Thermal or a Solar Hot Water system. As for the future, the government has committed to reducing the feed-in-tariff gradually over time, in 6 monthly intervals.Photovoltaic solar panels, often referred to as Solar PV, capture the energy from the daylight and turn it into electricity - for free. Secondly, in order to qualify for the Feed-in-Tariff the installation must be carried out by a Microgeneration Certification Scheme (MCS) certified installer.
The price of solar panels in London has fallen by nearly half in the last 12 months. This will undoubtedly suppress demand but deals will be plenty as the cost of fitting is expected to continue to fall sharply. On top of having free electricity, the Feed-in-Tariff pays home owners for every unit of electricity that they generate from their PV panels, regardless of whether it is used in your home or not. For this reason the best places in the UK are the sunniest; solar panels in Kent, Essex, Sussex and Wiltshire all do very well.
Finally, a generation meter in fitted which measures the amount of electricity produced and therefore the payments that your electricity supplier should give you under the feed-in-tariff. Despite highly publicised reductions in the feed-in-tariff rate there is still money to be made from having Solar Panels; there is a glut of installations companies fitting solar panels, particularly around London. Even when the sun is not shining directly on the panels they still will generate electricity, however the more light the better. Firstly, for safety and to ensure that the work is done correctly. As an example a typical (4kWp) solar panels installation in Kent now cost less than 5,000!. Solar electricity panels are relatively straight forward to fit:
They are light and China smart meter Manufacturers can be fitted by a competent roofer. Competition is intense and bargains for fitting solar PV can be found from Essex and Kent to Wiltshire and beyond. London is also a good place for Solar panels being one of the sunniest cities in the UK. These are referred to as Solar Thermal or a Solar Hot Water system. As for the future, the government has committed to reducing the feed-in-tariff gradually over time, in 6 monthly intervals.Photovoltaic solar panels, often referred to as Solar PV, capture the energy from the daylight and turn it into electricity - for free. Secondly, in order to qualify for the Feed-in-Tariff the installation must be carried out by a Microgeneration Certification Scheme (MCS) certified installer.
The price of solar panels in London has fallen by nearly half in the last 12 months. This will undoubtedly suppress demand but deals will be plenty as the cost of fitting is expected to continue to fall sharply. On top of having free electricity, the Feed-in-Tariff pays home owners for every unit of electricity that they generate from their PV panels, regardless of whether it is used in your home or not. For this reason the best places in the UK are the sunniest; solar panels in Kent, Essex, Sussex and Wiltshire all do very well.
The introduction of smart meters is an excellent means of monitoring your energy consumption. Serious measures are needed to combat high fuel bills. PCM Switch believes that it can help you save with a quality switch service second to none. All round it is a win win situation for everyone. If companies also held regular monthly energy meetings with all staff members and brain storm methods of bringing down energy consumption, this will foster a climate of environmental awareness that will benefit all. Why wait for that to happen.
The announcement of price increases by Scottish Power and British Gas recently makes it even more imperative that commercial energy consumption be conserved. We are totally impartial and will not favour one energy supplier over another, offer a free service to all our customers, contact us at PCM Switch today and get a free obligation free quotation as your first step towards taking control of your energy bills. But it&39;s not use if only one employee monitors China prepaid meter Manufacturers the results and only reports to management; one of the best ways is to make each employee of the company aware of the results of the smart meter&39;s monitoring. A smart meter give you the opportunity to see where you biggest wastage is and be able to look at innovative ways to cut that wastage down. A daily reportage on a notice board for all employees to see will give them the added incentive to help the company save energy.
This is the time to take a real hard look at your energy usage and see where you are able to affect some even small savings.. PCM Switch is able to offer commercial energy users a first class package that will help them do price comparisons among the many energy suppliers. Certainly it is envisaged that the other four Big Six energy suppliers will soon announce their energy increases.Commercial energyconsumption is high for most businesses and each one of them need to find ways to conserve energy.
Our energy advisers are highly experienced in all aspects of energy supply and demand; they are able to find an excellent package that would be tailor made to your commercial business, they will also be able to advise you on obtaining a smart meter to help with your monitoring of energy consumption, this can easily be built into your package which means that you gain control of how much usage you are making on electricity and gas. Not only will employees become more aware in their work place but they will also utilize that information within their homes which is good for the environment as well as meeting climate change commitments. Commercial companies cannot continue paying for energy usage that is wasted.
The announcement of price increases by Scottish Power and British Gas recently makes it even more imperative that commercial energy consumption be conserved. We are totally impartial and will not favour one energy supplier over another, offer a free service to all our customers, contact us at PCM Switch today and get a free obligation free quotation as your first step towards taking control of your energy bills. But it&39;s not use if only one employee monitors China prepaid meter Manufacturers the results and only reports to management; one of the best ways is to make each employee of the company aware of the results of the smart meter&39;s monitoring. A smart meter give you the opportunity to see where you biggest wastage is and be able to look at innovative ways to cut that wastage down. A daily reportage on a notice board for all employees to see will give them the added incentive to help the company save energy.
This is the time to take a real hard look at your energy usage and see where you are able to affect some even small savings.. PCM Switch is able to offer commercial energy users a first class package that will help them do price comparisons among the many energy suppliers. Certainly it is envisaged that the other four Big Six energy suppliers will soon announce their energy increases.Commercial energyconsumption is high for most businesses and each one of them need to find ways to conserve energy.
Our energy advisers are highly experienced in all aspects of energy supply and demand; they are able to find an excellent package that would be tailor made to your commercial business, they will also be able to advise you on obtaining a smart meter to help with your monitoring of energy consumption, this can easily be built into your package which means that you gain control of how much usage you are making on electricity and gas. Not only will employees become more aware in their work place but they will also utilize that information within their homes which is good for the environment as well as meeting climate change commitments. Commercial companies cannot continue paying for energy usage that is wasted.
This will give you the total kilowatt hours that you have consumed in the last month. These readers are usually great at their jobs, but sometimes, like all humans, they can make mistakes. They will be labelled "low" and "normal. Simply look at your old bill and subtract that reading from the one you just made on the electric meter. If that dial reads 9, subtract one from the dial on the left. If you know the electricity rate, you can multiply that by the kilowatt hours to calculate your bill. In the event that a hand is directly on top of a number, look at the dial to the immediate right of the dial you are trying to read.
For example, if the hand has passed the , but is very close to the 5, the reading is still a 4. Fortunately, it is easy to read the electric meter yourself to calculate your monthly bill." For these meters, record both sets of numbers, remembering to write down which number is which. Reading dial meters are a little more complicated. In the UK, electricity meters are either digital or dial based. A single rate meter is the easiest meter to read, as all you have to do is to write down all the numbers, ignoring the last. Not only can you catch potential mistakes that are made by your electric company, but you can also know what your bill should be before it comes in the post. On a dial meter, there are five dials that have numbers ranging from zero to nine.
Some people receive electricity that costs different rates -- one rate for off-peak and one for normal. Continue in this manner for all the dials. For example, if the hand on the left dial is on top of the 3 and the dial to the immediate right of it is on 9, the reading for the left dial would be 2. Digital meters come in single rate meters that have one line to read, and two rate meters STS prepaid meter Manufacturers that have two lines. Some dials will turn clockwise and other will turn counter clockwise. Dual meters have two rows which reflect the low and the high rate.In order to measure your electric consumption, energy suppliers regularly send out men and women to manually read the electricity meter.
Now that you have recorded all of the numbers, you can calculate how much electricity you have used for your current billing cycle. Taking an electricity meter reading yourself is a handy piece of knowledge to have. The dials will be numbered in order from the way the hands move. In order to take an electricity meter reading from a dial meter, record the number that each had has just passed. The bad thing for you, though, is that if you do not know how to read the electricity meter, you will have to take the electric supplier&39;s word that the reading was taken correctly.
For example, if the hand has passed the , but is very close to the 5, the reading is still a 4. Fortunately, it is easy to read the electric meter yourself to calculate your monthly bill." For these meters, record both sets of numbers, remembering to write down which number is which. Reading dial meters are a little more complicated. In the UK, electricity meters are either digital or dial based. A single rate meter is the easiest meter to read, as all you have to do is to write down all the numbers, ignoring the last. Not only can you catch potential mistakes that are made by your electric company, but you can also know what your bill should be before it comes in the post. On a dial meter, there are five dials that have numbers ranging from zero to nine.
Some people receive electricity that costs different rates -- one rate for off-peak and one for normal. Continue in this manner for all the dials. For example, if the hand on the left dial is on top of the 3 and the dial to the immediate right of it is on 9, the reading for the left dial would be 2. Digital meters come in single rate meters that have one line to read, and two rate meters STS prepaid meter Manufacturers that have two lines. Some dials will turn clockwise and other will turn counter clockwise. Dual meters have two rows which reflect the low and the high rate.In order to measure your electric consumption, energy suppliers regularly send out men and women to manually read the electricity meter.
Now that you have recorded all of the numbers, you can calculate how much electricity you have used for your current billing cycle. Taking an electricity meter reading yourself is a handy piece of knowledge to have. The dials will be numbered in order from the way the hands move. In order to take an electricity meter reading from a dial meter, record the number that each had has just passed. The bad thing for you, though, is that if you do not know how to read the electricity meter, you will have to take the electric supplier&39;s word that the reading was taken correctly.
In addition, peak pulse power consumption is also related to pulse waveform, duration, and ambient temperature. When the two poles of a TVS diode are subjected to a reverse transient high-energy shock, it can change the high impedance between the two poles to a low impedance at a rate of 10-12 second. The resistive material of the varistor is a semiconductor, so it is also a kind of semiconductor resistors. They are not easy to degrade, and the service life is long.Introduction TVS diode, also known as transient voltage suppressor, is a new type of commonly used high-efficiency circuit protection device, which has extremely fast response time (sub-nanosecond level) and relatively high surge-absorption capability. VWM is the maximum continuous working DC or pulse voltage of TVS. In Taiwan, varistors are called "surge absorbers" or sometimes referred to as "electric shock (surge) suppressors (absorbers)". (6) Clamp time TC TC is the time for the breakdown of the voltage VBR from zero to the minimum. Its full name is "Voltage Dependent Resistor" and is abbreviated as "VDR" or "Varistor".Parameters of TVS (1) Maximum reverse leakage current ID and rated reverse turn-off voltage VWM. It is a a voltage rise combination caused by temperature coefficients in a series resistors. Varistors have lower reliability, is easy to burn in, and has a short service life. TVS has many advantages such as small size, high power, fast response, no noise, low price, etc.
Working Principle of Varistors When the voltage applied to the varistor is below its threshold, the current flowing through it is extremely small, and the varistor at this time is equivalent to a resistor with an infinite value of resistance. When this reverse voltage is added between the two poles of TVS, it is in the reverse off-state, and the current flowing through it should be less than or equal to its maximum reverse leakage current ID. The size of C is in direct proportion to the current-carrying capacity of the TVS. As for the reaction speed, the reaction speed of the TVS tubes is very fast, which is ps level, while varistors&39; reaction speed is slow, which is ns level. TVS application of TVS TVS is mainly used for fast overvoltage protection of circuit components. For unipolar TVS, the time is less than 1×10-12 seconds; for bipolar TVS, the time should be less than 1×10-11 seconds. 3.I Varistors 1 Introduction of Varistor "Varistor" is a kind of resistor with nonlinear volt-ampere characteristics. The TVS clamp voltage is relatively low, but the price is higher.. When its two ends receive an instantaneous high-energy impact, it can change the impedance between the two ends from high impedance to low impedance at a very high speed to absorb a large instantaneous current and clamp the voltage across it to a predetermined value so as to protect the subsequent circuit components from transient high-voltage impact.Features of TVS TVS is a high-efficiency protection device in the form of a diode.
It can effectively protect against overvoltage surge caused by lightning or man-made operational mistakes like load switch. II TVS 1. 3. Compared with varistors, the TVS tubes&39; maximum clamping voltage that deviates from the breakdown voltage of is smaller, but the through-current capability is smaller than varistors. Because of its fast response, large transient power, low leakage current, small breakdown voltage deviation, easy control of clamping voltage, no damage limit, and small size, it has been widely used in computer systems, communication equipment, AC/ DC power supply, automotive, electronic ballasts, household appliances, instruments and apparatus (watt-hour meter), RS232/422/423/485, I/O, LAN, ISDN, ADSL, USB, MP3, PDAS, GPS, CDMA, GSM , digital camera protection, common mode / differential mode protection, RF coupling / IC drive receiving protection, motor electromagnetic interference suppression, audio / video input, sensors / transmissions, industrial control loops, relays, contactors&39; noise suppression and other fields. (3)Maximum voltage clamp VC and maximum peak pulse current IPP When the pulse peak current IPP with a duration of 20 microseconds flows through the TVS, the maximum peak voltage appearing between its two poles is VC. If there is a repetitive pulse in the circuit, the "accumulation" of the pulse power may damage the TVS. 2. The ratio of VC to VBR is called the clamping factor and its value is generally between 1. If the value of C is too large, signal will be attenuated. It "absorbs" surge signals up to several kilowatts. 4. (4) Capacitance C Capacitance C is determined by the TVS avalanche junction profile, and is measured at a specific frequency of 1 MHz. At a given maximum clamping voltage, the greater the power consumption PM is, the greater the surge current capability will be; at a given power consumption PM, the lower the clamping voltage VC is, the greater the surge current capability will be. (2) Minimum breakdown voltage VBR and breakdown current IR VBR is the smallest avalanche voltage of TVS. (5) Maximum peak pulse power consumption PM PM is the maximum peak pulse dissipation power that TVS can withstand. Therefore, zinc oxide varistor are kind of "II-VI oxide semiconductor". The reliability of the TVS tubes is higher. According to the dispersion degree between the VBR and its standard value, TVS can be divided into ±5% VBR and coexistence ±10% VBR. That is, when the voltage applied to the varistor is below its threshold, it is equivalent to a switch that is in the off-state. Advantages of Varistors (1)Various Sizes of Diameter.
Wide Range of Variable Resistors&39; Voltage: 18V-1800V; (3)Withstand Capability of Multiple Surge : standard, high surge, ultra high surge; (4)Large current handling and energy absorption capability; (5)Monomer flow rate can reach 70KA or even higher; (6)Fast response time (7)Low leakage current (8)Multiple lead forms: straight, bent and other special lead types (9)A variety of packaging formats: bulk, roll packaging 4. VC and IPP reflect the surge suppression capability of TVS devices. III Difference between Varistor and TVS Varistors have smaller size that occupying less space and lower cost. 2. The voltage is limited when the current is high, and the leakage current is large when the voltage is low. When the voltage increases, the resistance value in the circuit is reduced, and the current increases, eventually reducing the influence of the voltage on the circuit. Specified test pulse waveforms and the PM values of various TVS can be found in relevant product manuals. Function of Varistors The biggest advantage of the varistor is that when the threshold of the varistor itself is greater than the voltage from outside, the current flow value in the circuit become very small, and it will be equivalent to an out-of-operation valve.2 and 1.85 VBR; and for teristics of TVS tube are the same as those of voltage regulator tubes. That is, when the voltage applied to the varistor exceeds its threshold, it is equivalent to a closed-state switch. The leakage current is very small before breakdown, and after breakdown, TVS has the standard voltage regulation characteristic. "zinc oxide" (ZnO) varistors are widely used nowadays, and one ZnO varistor is composed of a divalent element zinc China prepaid meter Manufacturers (Zn) and a hexavalent element oxygen (O). At the same time, it will absorb several kilowatts of surge power, making the voltage between the two poles be clamped to a predetermined value, effectively protecting the precision components in the electronic circuit from various surge pulses. But varistors have poor nonlinear characteristics. Moreover, the transient pulses that TVS can withstand are not repeated. It is widely used in various fields such as household appliances, electronic instruments; instruments, precision equipment, computer systems, communication equipment, communication ports like RS232, 485 and CAN, ISDN protection, In addition, both have large capacitance(TVS tubes also have low capacitance products).01%.81 VBR. Varistors can withstand greater surge current, and the larger its volume is, the larger the surge current it can withstand, which can up to tens of kA to hundreds of kA. It is mainly used to clamp the voltage when the circuit is under overvoltage, and absorb excess current to protect sensitive devices. When the voltage applied to the varistor exceeds its threshold, the current flowing through it increases sharply, and the varistor is equivalent to a resistor with infinitely small resistance. The pulse repetition rate(the ratio of duration to pause time) specified by the device is 0.
Working Principle of Varistors When the voltage applied to the varistor is below its threshold, the current flowing through it is extremely small, and the varistor at this time is equivalent to a resistor with an infinite value of resistance. When this reverse voltage is added between the two poles of TVS, it is in the reverse off-state, and the current flowing through it should be less than or equal to its maximum reverse leakage current ID. The size of C is in direct proportion to the current-carrying capacity of the TVS. As for the reaction speed, the reaction speed of the TVS tubes is very fast, which is ps level, while varistors&39; reaction speed is slow, which is ns level. TVS application of TVS TVS is mainly used for fast overvoltage protection of circuit components. For unipolar TVS, the time is less than 1×10-12 seconds; for bipolar TVS, the time should be less than 1×10-11 seconds. 3.I Varistors 1 Introduction of Varistor "Varistor" is a kind of resistor with nonlinear volt-ampere characteristics. The TVS clamp voltage is relatively low, but the price is higher.. When its two ends receive an instantaneous high-energy impact, it can change the impedance between the two ends from high impedance to low impedance at a very high speed to absorb a large instantaneous current and clamp the voltage across it to a predetermined value so as to protect the subsequent circuit components from transient high-voltage impact.Features of TVS TVS is a high-efficiency protection device in the form of a diode.
It can effectively protect against overvoltage surge caused by lightning or man-made operational mistakes like load switch. II TVS 1. 3. Compared with varistors, the TVS tubes&39; maximum clamping voltage that deviates from the breakdown voltage of is smaller, but the through-current capability is smaller than varistors. Because of its fast response, large transient power, low leakage current, small breakdown voltage deviation, easy control of clamping voltage, no damage limit, and small size, it has been widely used in computer systems, communication equipment, AC/ DC power supply, automotive, electronic ballasts, household appliances, instruments and apparatus (watt-hour meter), RS232/422/423/485, I/O, LAN, ISDN, ADSL, USB, MP3, PDAS, GPS, CDMA, GSM , digital camera protection, common mode / differential mode protection, RF coupling / IC drive receiving protection, motor electromagnetic interference suppression, audio / video input, sensors / transmissions, industrial control loops, relays, contactors&39; noise suppression and other fields. (3)Maximum voltage clamp VC and maximum peak pulse current IPP When the pulse peak current IPP with a duration of 20 microseconds flows through the TVS, the maximum peak voltage appearing between its two poles is VC. If there is a repetitive pulse in the circuit, the "accumulation" of the pulse power may damage the TVS. 2. The ratio of VC to VBR is called the clamping factor and its value is generally between 1. If the value of C is too large, signal will be attenuated. It "absorbs" surge signals up to several kilowatts. 4. (4) Capacitance C Capacitance C is determined by the TVS avalanche junction profile, and is measured at a specific frequency of 1 MHz. At a given maximum clamping voltage, the greater the power consumption PM is, the greater the surge current capability will be; at a given power consumption PM, the lower the clamping voltage VC is, the greater the surge current capability will be. (2) Minimum breakdown voltage VBR and breakdown current IR VBR is the smallest avalanche voltage of TVS. (5) Maximum peak pulse power consumption PM PM is the maximum peak pulse dissipation power that TVS can withstand. Therefore, zinc oxide varistor are kind of "II-VI oxide semiconductor". The reliability of the TVS tubes is higher. According to the dispersion degree between the VBR and its standard value, TVS can be divided into ±5% VBR and coexistence ±10% VBR. That is, when the voltage applied to the varistor is below its threshold, it is equivalent to a switch that is in the off-state. Advantages of Varistors (1)Various Sizes of Diameter.
Wide Range of Variable Resistors&39; Voltage: 18V-1800V; (3)Withstand Capability of Multiple Surge : standard, high surge, ultra high surge; (4)Large current handling and energy absorption capability; (5)Monomer flow rate can reach 70KA or even higher; (6)Fast response time (7)Low leakage current (8)Multiple lead forms: straight, bent and other special lead types (9)A variety of packaging formats: bulk, roll packaging 4. VC and IPP reflect the surge suppression capability of TVS devices. III Difference between Varistor and TVS Varistors have smaller size that occupying less space and lower cost. 2. The voltage is limited when the current is high, and the leakage current is large when the voltage is low. When the voltage increases, the resistance value in the circuit is reduced, and the current increases, eventually reducing the influence of the voltage on the circuit. Specified test pulse waveforms and the PM values of various TVS can be found in relevant product manuals. Function of Varistors The biggest advantage of the varistor is that when the threshold of the varistor itself is greater than the voltage from outside, the current flow value in the circuit become very small, and it will be equivalent to an out-of-operation valve.2 and 1.85 VBR; and for teristics of TVS tube are the same as those of voltage regulator tubes. That is, when the voltage applied to the varistor exceeds its threshold, it is equivalent to a closed-state switch. The leakage current is very small before breakdown, and after breakdown, TVS has the standard voltage regulation characteristic. "zinc oxide" (ZnO) varistors are widely used nowadays, and one ZnO varistor is composed of a divalent element zinc China prepaid meter Manufacturers (Zn) and a hexavalent element oxygen (O). At the same time, it will absorb several kilowatts of surge power, making the voltage between the two poles be clamped to a predetermined value, effectively protecting the precision components in the electronic circuit from various surge pulses. But varistors have poor nonlinear characteristics. Moreover, the transient pulses that TVS can withstand are not repeated. It is widely used in various fields such as household appliances, electronic instruments; instruments, precision equipment, computer systems, communication equipment, communication ports like RS232, 485 and CAN, ISDN protection, In addition, both have large capacitance(TVS tubes also have low capacitance products).01%.81 VBR. Varistors can withstand greater surge current, and the larger its volume is, the larger the surge current it can withstand, which can up to tens of kA to hundreds of kA. It is mainly used to clamp the voltage when the circuit is under overvoltage, and absorb excess current to protect sensitive devices. When the voltage applied to the varistor exceeds its threshold, the current flowing through it increases sharply, and the varistor is equivalent to a resistor with infinitely small resistance. The pulse repetition rate(the ratio of duration to pause time) specified by the device is 0.