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I built one of these for a fellow TGP member about a month ago and worked on my own when I had the time in the period since. I used...

I think you're right.

Oh yeah. I've tried all the holes, in all the positions. It's hardcore action going on here.

I just tested a mpsa18 with an hfe of 774 it read it no problem.

Thanks everyone. I'm pretty sure I've got the legs in there with a decent connection. Although this was just one picture, I've tried...

Yes, great write up @bowanderror. So here's an example of what I'm seeing with a Ge transistor. It just sees a resistance. I popped...

I just ordered a TC1 tester--my intent was to get ballpark measurements for some Ge transistors. I'm pretty frustrated with it though...

I appreciate the links, but I'm probably not going to initiate an order to mouser for a < $1 part. I was hoping to find something at...

You could also just use a 1n5817 (drain to source) and omit R1 if you don’t want to bother with the mosfet. The mosfet scheme is more...

thx you so much guys, you are the best :love: 🤩

Usually, you'll find it listed as "DC Power Jack 2.1 mm" or something like that. The 12V and 16V you see might be the rating?... I...

BS250P if you can find one???

The MOSFET power supply protection scheme is not like flipping BJTs in dirt circuits. Can't use an N-channel MOSFET in the positive lead...

Did I say later? It’s 9:30…! We made Cuban chicken and rice (awesome btw Desi’s fav), which takes awhile but gee whiz!

So I was bored and decided to measure the silicon diodes I have on hand via three different devices and stick the results in a...