Can someone please explain how C1 can charge//discharge when one of its terminals is connected to the very high impedance of the op-amp inverting input input and the other terminal is tied to ground? It would have to be a very low value capacitor to exhibit any useful change in charge, would it not?
@aerofart
Жыл бұрын
I think I spoke too soon. Looks like the second circuit (correctly drawn) explains how.
@vlastimilelias
Жыл бұрын
But the second schematics has incorrectly connected R3. It must go to the ground to match the equations 1 and 2. Thanks to the author to keeping our brains working 😂
@aerofart
Жыл бұрын
@@vlastimilelias I haven’t verified your claim independently, but in the absence of an argument to the contrary, I’ll take your word for it. Thanks for letting us know.
@AnalogDude_
Жыл бұрын
How would you qualify the "timer/oscillator" circuit in the noise Circuit of the Roland TR-909 drum computer? Using either Cd4030 or Cd4070. What kind of math would apply there to calculate speed?
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