Matching transistors & measuring the results

[RickRay]

I think your reasoning is sound. i would get the 12v, you can lower the voltage much easier and it will work at 12V anyway.

 

[bloqhed]

I think I have managed to source a couple of bipolar supplies. One is a +/- 9V 2.7A supply and the other is a +/-12V 2.0A supply. These look like they should work. Leaning towards the 12V supply as it operates at lower A and I am thinking that it is easier to drop V a bit if necessary, rather than trying to increase the V. Cheap enough that it saves me the hassle of sourcing parts and assembling. Any comments on which of the above supplies would be better suited for use with the transistor matcher?

Can you share a link to the 12v PSU you found? Thanks!

 

[Kokanee]

Hi bloqhed, They are at the antek site, under power supplies. I just received 2 transformers for my Alpha Nirvana and the 12V power supply, which really outputs 11V, so should work great.

www.antekinc.com

MM

 

[bloqhed]

That's great thanks, I didn't even think to look at PSU's at antek. With my variac I'll be able to dial the voltage in just right.

Now I need to do some reading and figure out how exactly to use this matching jig

 

[Chrisr3521]

How does everyone swap the transistors out, do you hot swap them or switch the tester off then swap?