Power supplies for transistor testers?

[jpm83]

What kind of power supply should I use for those GEOFEX tranny testers? I'm asking because the 9V batteries that I have right now give me 10V. I have a Ibanez wall wart supply a 1Spot and a regulated adjustable 1A (transformer) power supply. Should I use one of those power supplies or go and buy 9V battery that have some sort of brand (I would think they would give you right voltage)?

Janne

[R.G.]

The 1Spot is regulated to the same voltage as a fresh alkaline battery. It would be a good choice. The Ibanez would probably work as well.

[jpm83]

Thanks for answering. Now I have to test some salvaged old PNP germs.

Janne