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Old 1st Apr 2019, 7:10 pm   #70
DonaldStott
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Join Date: Aug 2015
Location: Glasgow, UK.
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Default Re: Turntable Stroboscope

Quote:
Originally Posted by TonyDuell View Post
Incidentally, have you tried feeding the 300Hz output of the 4060 into a transistor driver stage and an LED? It will be on half the time, but it may still be useable as a stroboscope. You may be doing all this work for no real benefit!
Thanks Tony - don't worry about the work, it keeps me busy and it's educational.

It will be interesting to compare and contrast the symmetrical square wave (50% duty cycle) with the asymmetrical square wave (6.25% duty cycle) when I get them working i.e. which one is best in giving a very clear stationary pattern on the strobe markings (I have a strobe disk for turntables).

And no real financial outlay either!

It's also allowed me to fire up my Topward Digital Function Generator, my ageing Farnell 30-4D oscilloscope and to get them properly connected. NOTE - still no responses to my Post #54 above.

Just realised that this will be Post #70 in this Thread - hopefully we are nearing a conclusion.

Just found 'The Art of Electronics' 3rd Edition on Amazon.co.uk - ouch!
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