Thứ Năm, 25 tháng 9, 2014

test of the correct polarity of the control:

Oh well that is although not overly precise, but whether it generally comes down, you can tell already.

1. test of the correct polarity of the control:

You want to ' get out, whether the high voltage cable jointing   MOSFETs are controlled properly, take out the primary coil of the half bridge, provide them with 12V of normal voltage and power a small light bulb in series with the two MOSFETs. If the illuminated, while the circuit is running, the MOSFETs are controlled wrongly, then both at the same time. If not, ever ok, doesn't mean that it is.

2. test the AC generation

Turn a small transformer in the bridge Instead of the primary coil. 20 primary windings, secondarily. On the secondary side again the small light bulb. If the lights, then work the production of AC voltage, the transformer makes the light bulb glow. Does it work isn't an error somewhere, so that the bridge produces no AC. Probably the MOSFETs incorrectly by control. It also works with a full bridge.

Half-bridge you can go over also the test, because she can leave a performance only with existing AC voltage at all. A full-bridge can transport but also DC thus brauchts the transfer marker test.

3. checking the quality of the signal

Unlock any resistance (car halogen lamp or something) in the half-bridge as a consumer and slowly increase the voltage from 0V to until the lamp begins to glow. (Protective low voltage, no network!) At the same time, you befühlst the MOSFETs whether companions are warm. If not and the lamp lights up full steam ahead (the 100W or more) then alright, the MOSFETs work in pure switching operation. Those things are hot, so the signal quality of control is bad, the Moses operation run in the A and swinish generate losses. This is due mostly to the GDTs when running in the saturation or low permeability beitzen (air column!)

4. adjust the frequency

This also use only 12V bridge voltage noble and a car lamp in series to the half-bridge, thus the MOSFETs not at the frequency setting off smoke. When training without the TC output light - bad. Then the frequency at the TC adjust to maximum output power is reached.

Then, if everything works, can finish assembling the Konstruktuion & slowly increase the voltage at the bridge.


Well, so you can find out whether it is in principle. Whether the circuit then however survives a test on mains voltage - who knows...

Thứ Ba, 10 tháng 6, 2014

ZVS: which diode???


I was dancing a ZVS, net know which diode should I kaufn.
ma read that I should fast diodes the UF4007 nehmen.kann I take instead of the UF4007 also the 1n4007???
and which diodes are supposed distribution design to be with the two hoe????
Suppression diodes.


and should I then take that which protect the 12 volt or what? look under tutorials because there are tutorial, this clears all a TVS your ask
and please use the Forum search even before you take on a new make up. you still go? you are but not all serious telling me that you do not find the tutorial unterforum and that you're not capable of "ZVS tutorial" in the search to enter?

It can be fun. SRY, but if you do not find the tutorial, that you may have quite different problems than diodes for the ZVS.
and that share with hook "Zener diodes" rant is