Use a CD4096 to generate an oscillating waveform and plot the results
I found this oscillator circuit as part of the LEAP#182 PowerSupply317Kit.
It is another variation of the basic Schmitt Inverter Waveform Generator pattern, which I tested in LEAP#022 SchmittOscillator.
… is quite terrible actually. Oscillation is only sustained for a small sweep of the 100kΩ pot. The waveform is also heavily asymmetric - with a duty cycle at most 25%.
|Setting||C1||R1 (pin 2-3)||Frequency|
|max sustained oscillation||10µF||2.5kΩ||27Hz|
|min sustained oscillation||10µF||40kΩ||0.4Hz|
|max sustained oscillation||1µF||2.15kΩ||165Hz|
|min sustained oscillation||1µF||40kΩ||4Hz|
Scope trace for C1=1µF, R1(2-3)=2.15kΩ:
Scope trace for C1=1µF, R1(2-3)=40kΩ: