Meteor
Stern Electronics, 1979You're currently viewing posts by Pinsider barakandl.
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Bob,
Bally/Stern chose a poly cap because they are likely more precise over a range on situations like temp vs ceramic.
Ultimately you need to choose a resistor and cap combination that gets your MPU display interrupt between 320 - 360Hz. Error on the high side or you get visible blinking on the displays. The MPU seems to keep up with interrupts on the high end OK.
Andrew
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Kettering, OH