[Ideas For Design] Just two ICs can create an accurate guitar tuner
Accurately measuring the frequency of a low-frequency signal takes many cycles, and is difficult on signals of relatively short duration. Measuring the period of such signals can be done rapidly and with great accuracy with the circuit presented here....
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Contributing Author
[Pease Porridge] Bob's Mailbox
Hiya Bob: In case 450,000 people haven't suggested this already, here goes: Our new car (which, alas, is new) keeps the radio playing until you open a door. I like that! (But what if...
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Bob Pease