Quote:
Originally Posted by ms660
One of the first weapons on the list is understanding polarity!...
You might have time to edit.
Lawrence.
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Thanks for spotting that Lawrence - drew two NPN instead of PNP transistors - asleep at the wheel again!
Too late to bury the mistake - nowhere to hide, so a corrected circuit attached.
That's two mistake in one thread (so far!) - don't tell my wife - she might put me in a home!
Incidentally, I've just noted the date on the CR132 battery. Don't know if that's the 'best before date' or date of manufacture.
Either way, the date is July 2009, so it's over eight years, and is still good.