Just a quick question.....
Can this be tested in circuit or does it have to be removed from the PC board to properly test it?
Thanks
Can this be tested in circuit or does it have to be removed from the PC board to properly test it?
Thanks
Thanks.How are you planning to test it?
The only thing you can test for is to look for shorts between the leads, gate, source and drain. Any resistance test will be influenced by the circuit to which it is attached.
Remove the component is the only way to properly test it.
I don't think so.OK,
I removed the MOSFET from the board and tested it....
1). Finger across all 3 terminals to drain any charge
2). Meter set to DIODE TEST Function
3). Negative lead placed on SOURCE terminal
4). Positive lead placed on DRAIN Terminal
----- Result = Open, no continuity ------
5). Moved Positive lead to Gate and held there for 30 seconds
6). Move Positive lead back to DRAIN terminal
------ Result = 485 displayed on the meter
Did I test it properly?
Does this prove the MOSFET is working properly?
Removing the component is the only way to properly test it.
Here's where I got the above info.......I don't think so. I would test it in a test circuit,
ok. If others can verify their usefulness I'll get them both. Electronics has become a hobby for me. Those might make it more funView attachment 132785
Two of the most useful instruments for testing components that I have!.... 9 times out of ten will test in circuit.
Have a look at Peak Electronics web site,ok. If others can verify their usefulness I'll get them both. Electronics has become a hobby for me. Those might make it more fun
The best one for testing mosfets is the dca 75 because of the ability to connect it to a computer to see operating curves etc, If you only need to know a few specs then the dca 55 is very good. both will test transistors, diodes.......Voltage regs and zeners up to about 9 Volts.Which device is best for testing Zener diodes and MOSFETS ?