24 Apr
2009
24 Apr
'09
11:50 a.m.
Most currently available inexpensive DMMs that
I've seen have the
capability to check transistor hFE, The last freebie I received with
Be careful using that facility. A lot of such meters just inject a
constant small current into the base and measure the collector current.
SOme of the older analogue meters simply connected a resistor from
collector to base to inject the base current and measured the
'resistance' from collector to emitter.
My point is that this will be totally fooled by a leaky transistor.
-tony