So... I've been working on a PCB for a push-pull driver using a triple-triode compactron tube.
Somehow, I sent the wrong version out to fab. It should work fine - I have NOT built it - but its missing a couple of features that I intended it to have, like an AC balance pot, and a CCS in the tail of the diff amp.
So, I have about 50 of these boards that I do not intend to use.
I'll give them away to anybody that wants them. Limit of 4 boards per person. Free! Although if you're outside the US I might ask you to pay for the shipping...
If you're interested, send me an email (the PM function is not the best way for me, sometimes I get no notifications). pmillett at hotmail works.
I'll attach a picture of the PCB, and the schematic. Hopefully they are readable.
Sorry, you're mostly on your own with this one, since I haven't even built it. I don't really have the time to help much with it.
Somehow, I sent the wrong version out to fab. It should work fine - I have NOT built it - but its missing a couple of features that I intended it to have, like an AC balance pot, and a CCS in the tail of the diff amp.
So, I have about 50 of these boards that I do not intend to use.
I'll give them away to anybody that wants them. Limit of 4 boards per person. Free! Although if you're outside the US I might ask you to pay for the shipping...
If you're interested, send me an email (the PM function is not the best way for me, sometimes I get no notifications). pmillett at hotmail works.
I'll attach a picture of the PCB, and the schematic. Hopefully they are readable.
Sorry, you're mostly on your own with this one, since I haven't even built it. I don't really have the time to help much with it.
Attachments
Pete
I just need a pair and I will gladly paypal shipping and I need to buy some other stuff from you
I just need a pair and I will gladly paypal shipping and I need to buy some other stuff from you
Potential builders.....I see a missing resistor. You will need to add a resistor from pin 9 of the tube to ground. It needs to be somewhere around 220 to 470K ohms.
Thanks George, I didn't notice that. Luckily I fixed it on the later revision...
Pete
Wow, they went fast. All gone.
Most of you that sent messages got them... if you sent a message after about 5:30PM Central time, you were too late.
I'll send emails to those of you that got them. Also, a few who were in time but still need to send me your mailing address.
If you missed out, I will have an improved version soon. But not free 🙁
For those of you in the US, I'll cover the postage. Do something nice for somebody.
Pete
Most of you that sent messages got them... if you sent a message after about 5:30PM Central time, you were too late.
I'll send emails to those of you that got them. Also, a few who were in time but still need to send me your mailing address.
If you missed out, I will have an improved version soon. But not free 🙁
For those of you in the US, I'll cover the postage. Do something nice for somebody.
Pete
- Status
- Not open for further replies.