UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Mini-drill; Speed Controller Problem

Bazz4CQJ · 27th Nov 2017, 5:55 pm

Thanks for the comments Peter; I'm afraid you are dealing with a "old geezer amateur", who only recently commented that I really should stick to valve circuits! I've ordered in some 358's; I think the pinouts are the same, so could this work as a simple substitution?

Curiously, as we've discussed on the forum over the last year (starting with RF voltmeters) this looks like just another example of a circuit appearing in the public domain which is fundamentally flawed.

B

27th Nov 2017, 5:55 pm	#5
Bazz4CQJ Dekatron Join Date: Apr 2009 Location: Oxfordshire, UK. Posts: 4,934	Re: Mini-drill; Speed Controller Problem Thanks for the comments Peter; I'm afraid you are dealing with a "old geezer amateur", who only recently commented that I really should stick to valve circuits! I've ordered in some 358's; I think the pinouts are the same, so could this work as a simple substitution? Curiously, as we've discussed on the forum over the last year (starting with RF voltmeters) this looks like just another example of a circuit appearing in the public domain which is fundamentally flawed. B __________________ Saturn V had 6 million pounds of fuel. It would take thirty thousand strong men to lift it an inch.