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PostPosted: Sat Jan 07, 2006 12:57 pm    Post subject: Re: the best procedure to check ultra fast diode by analogme

newone wrote:
the best procedure to check ultra fast diode by analogmeter

what is the best procedure?

how to know whith analog meter the diode is short or leckage

SET YOUR TESTER TO X10K ANY READING IN REVERSE SIMPLE MEANS LEAKAGES...OK?
awright
PostPosted: Fri Dec 30, 2005 1:38 pm    Post subject: Checking ultra fast diodes

newone:

You can't check the SPEED of ultra-fast diodes with analog meters.

You can check forward/reverse conductivity to see if they are functioning basically like a diode, but that will tell you nothing about switching speed. You need a sampling 'scope to check rise and fall times.

Let us know if you are only trying to test for forward/reverse conductance or are trying to test for rise and fall times.

atwright
Al_Dodge_Bundy
PostPosted: Wed Dec 28, 2005 11:20 pm    Post subject:

Can you measure resistance (Ohm) with your meter?

If so, a short should measure 0 - 10 Ohms
A good diode should measure infinitive resistance ( > 1000 M Ohms) in one direction and a few K Ohms in the other direction.

Grtz Mark
newone
PostPosted: Sat Dec 24, 2005 7:47 am    Post subject: the best procedure to check ultra fast diode by analogmeter

the best procedure to check ultra fast diode by analogmeter

what is the best procedure?

how to know whith analog meter the diode is short or leckage

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