unijunction needed

For a repair, right?

Y'know, this is exactly the sort of situation where cross-posting would be appropriate. (That would allow *everyone* reading your request to read **all** of the responses to it.)

Jeff, I don't use newsgroups very often. I hope I have done something taboo by crossposting. As a matter of fact, there are some interesting links in a reply in that other group.

Charles, Thanks. Every little bit helps. Yes, perhaps one of those will work. Electronics is not my strong suit. I'll have a bit of a time figuring out which one.

Thanks for the replies!

Alp

What you did was *non* cross-posting; what you did was MULTI-post. I can't think of a situation where that is a superior method.

...which echoes my point.

You STILL haven't said if this is for a REPAIR. It sounds like you are trying to build a project that you found in a magazine from 1967. If that is the case, an LM555 would probably be a *much* better way to go: cheaper and far more readily available.

The relay/timer is part of a 25-30 year old mass spectrometer. It was working fine until something in the relay/timer stopped working. I had a spare, I popped it in and the mass spectrometer is working again. I have no more spare relay/timers so I want to fix the one I took out just in case the replacement goes.

I'll have time to put into it in about 2 weeks.

Thanks

Alp