Who knows how to use a multimeter??

[doanster]

Specifically, what do the following functions do?

1) diode test... how do you test a diode with it??
2) square waveform thingy - no idea what it's for
3) transistor hFE test - what's hFE?

Any electrical guys out here???

 

[NogginBoink]

2) the square wave can be used as a signal source to test other electrical equipment.

 

[FoBoT]

1 - checks continuity. a diode will pass DC one direction and block it the other. so with the + and - one way, you get 0 ohms and the other way you get infinite
2- don't know what you are talking aboot
3- dunno

 

[NutBucket]

Originally posted by: FoBoT
1 - checks continuity. a diode will pass DC one direction and block it the other. so with the + and - one way, you get 0 ohms and the other way you get infinite

Uh, on every multimeter I've used if you have it biased in the right direction it will tell you "turn on voltage" of the diode...so for a common diode about .7V