How to test a mofet

[banbury frank]

Hi found a simple way to test a mosfet these are the row off black things on the heat sink

in your controller


MOSFET testing

Frank

 

[103Alex1]

So basically all you need is a multimeter which has a diode test range and puts 3-4v across it. Whatever that means ..

However .... it is good to know that these things can be easily tested as it looks like having one go dud is a bit of a hazard to your fire insurance risk . So now all you need to do is shell out £70-£100 on a multimeter which fits the bill (where does it end ?!!! lol.).

 

[banbury frank]

Hi all below link for a meter £ 7.48 delivered

DIGITAL LCD MULTIMETER VOLTMETER AMMETER AC DC METER OHM CIRCUIT TESTER | eBay

Frank

 

[NRG]

Plus a good soldering iron, solder sucker maybe braid as well, time and practice to remove the FET before you can test it!

 

[103Alex1]

Plus a good soldering iron, solder sucker maybe braid as well, time and practice to remove the FET before you can test it!

Aha ... I was thinking since the pins protrude below the circuit board a bit you could touch them in situ ... but if they are linked when installed then maybe that's not the way to do it ? !

It's good for testing FETs before installing them though especially if you get them in cheap / bulk - that's where my mind went first to be honest.

That multimeter is a bargain though. Can't say no to one of those at that price as seem to read regularly about recommends to test various things with a multimeter in fault diagnostic advice etc.