Fast recovery rectifier? - what is the recovery time for a scope
I'm trying to correct 240Vpeak, 50 kHz signal. I tried to use two independent CKT create a half-wave rectifier, but when I use the signal over a resistance range which shows a half-rectified signal for a while and then back to a noisy sine wave 240 is reduced from the original signal. A rectifier was measured at 400 V, and again 150NS time. The other was a 600V in 200ns. If this work or am I choosing the wrong type of rectifier. Even if I rectifiers with a DMM, I about 4K ohms to the front, and the M / G in the range of ohms dirction countdown to the rectifier. I thought they should take with little resistance in the direction? If fast recovery rectifiers have greater resistance? Thank you for your help.
Monday, February 8, 2010
What Is The Recovery Time For A Scope Fast Recovery Rectifier?
2 comments:
50 kHz has a period of 20μs. The average time is 10us, if a diode 200ns should be good.
You should have a diode of 480 volts, if you have no capacity to meet the burden to have.
Ohmmeter often too low voltage for the diode to turn all the way forward, so it probably normal. You can test this by setting a current through the diode and the voltage across its terminals. A source of 12 V and a resistance of 120 ohms in series with the diode is placed at approximately 10 mA through the opening.
"Measure of the signal strength of" the extent that the resistance? nice to see the track.
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Is your "load" resistance too high?
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