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High Reverse Voltage Diode
Help regarding a datasheet?
What is the meaning of the term "Maximum Recurrent Peak reverse voltage" in case of a diode( specifically 1N5402 diode)? In the datasheet it says it is equal to 200 volts. Does that mean I can't connect it to a A.C or D.C voltage supply higher than this value?
Almost correct.
It means that the peak voltage of your supply during the time that the diode is reversed biased (not conducting) can't exceed 200 volts. The peak voltage of a 120 volt AC mains is about 170 volts which doesn't give you much margin. If your mains are 240 volts, you would be well over the limit with a recurring 340 volt peak.
For a few cents more (or sometimes the same price) there are other rectifier diodes in the 1N5400 series that will handle higher PRV's. The extra margin is cheap insurance.
Don
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ISL9R18120 High Voltage Ultra Fast Reverse Recovery Diode 45ns 1200V 18A Qty:2 |  |
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Voltage Doubler $54.86 High Quality Content by WIKIPEDIA articles A voltage doubler is an electric circuit with an AC input and a DC output of roughly twice the peak input voltage. They are a variety of voltage multiplier circuit and are often, but not always, a single stage of a general form of such circuits. The term is usually applied to circuits consisting of rectifying diodes and capacitors only, other means of doubling voltages are not included.The Villard circuit consists simply of a capacitor and a diode. While it has the great benefit of simplicity, its output has very poor ripple characteristics. Essentially, the circuit is a diode clamp circuit. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 68 Publication Date: 2010/07/14 Language: English Dimensions: 6.00 x 9.00 x 0.16 inches |
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Transmission Lines and Schottky Diode $108.33 A nonlinear relation between current and voltage for schottky resonant tunneling diode is used. A general form of equation similar to VanDer Pol equation is obtained. A Resonant tunneling diode(RTD) has a negative differential resistance that means when the voltage increases the current decreases. This property is very useful for oscillators manufacture. Nonlinear transmission lines is considered to show that it canbe used in oscillators and to show that it can reshape the sinusoidal signals to othershapes by using OrCad and mathematica programming. Author: ElKhozondar, Hala J./ ElKhozondar, Rifa J./ Abo Ireban, Ibtisam Binding Type: Paperback Number of Pages: 80 Publication Date: 2011/07/12 Language: English Dimensions: 9.02 x 5.98 x 0.19 inches |
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Electric Starion EV - Electric Car Conversion - Part 7
How to get a 9V high ampere supply from a 12v storage cell ?
I have a remote controlled car that runs on a rechargable sealed 12v battery. But the car has no speed controls. Only forward, reverse, left and right... The car's standard speed is too high to be controlled on the remote without bumping into walls and objects. But I noticed a slow down on the car when battery charge reaches like 25%. So I tried to drop some voltage by connecting five 1N4001 general purpose silicon diodes in series to the battery.... The speed was now perfect... But after running the car for like 5 minutes, I opened the battery enclosure to see the plastic body of the car in contact with the diode, started melting due to the high temperature produced due to the high current thru the diodes.....
Is there any other good way to drop a 3v from a approx. 1A 12v battery such that no heat is produced..... ?
Theoritically, when I run the car slower, I should get more hours of battery backup..... But not if all those energy is wasted as heat......
Pls Help....
Nothing gets you to zero heat, but a switching regulator can get close. If you are electrically inclined, go to National Semiconductor's website for a cookbook design that will work for you.
edit: guess I could include a link.
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