🚀 go-pugleaf

In article <1992Sep24.224850.1799@news2.cis.umn.edu>, rob@dexter.psych.umn.edu (Robert Stephens) writes:
> I have an N-ch MOSFET hi-speed switch.  It has
> a Source, Drain, and Gate.  Is there a way I
> can test its integrity by itself (out of the
> circuit)?
> 

Use your trusty multi-meter on the 2k ohms range. Measure the following:
Gate - Source ..... open
Source - Gate ..... open
Gate - Drain ...... open
Drain - Gate ...... open
Drain - Source .... about 500 ohms (due to body-drain diode)
Source - Drain .... open
Apply +Ve lead from ohm meter (usually black) to gate and -Ve lead
(usually red) to source. Without touching any of the terminals (that's
enough leakage to turn it off), measure drain-source and source-drain. They
should read close to zero. Whilst measuring source-drain, touch the gate
pin and you should see the device turn off.

    Sla/n go fo/ill,
                    Risky B.
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