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Old 10th Feb 2019, 6:37 pm   #32
TonyDuell
Dekatron
 
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,191
Default Re: Turntable Stroboscope

OK, that sounds right for pin 12.

Does the IC still overheat if the Topward (counter) is not connected?

You have the oscillator wired as in the datasheet. Pin 12 is grounded. You have a 4.5V battery between ground (pin 8) and pin 16. Are there any other connections to any pins of the IC?
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