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TonyDuell · 3rd Aug 2017, 5:30 am

Thinking about it some more, I am not sure that 2N3906s will be suitable in the flip-flops of this machine. Some of these transistors switch the current to the deck solenoids (pinch rollers, etc) and I hadn't realised until I looked it up that an AC128 (the original transistor) will pass 1A.

I wonder if a BC640 would be better.

3rd Aug 2017, 5:30 am	#24
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,208	Re: Philips N4450 Thinking about it some more, I am not sure that 2N3906s will be suitable in the flip-flops of this machine. Some of these transistors switch the current to the deck solenoids (pinch rollers, etc) and I hadn't realised until I looked it up that an AC128 (the original transistor) will pass 1A. I wonder if a BC640 would be better.