Square wave ltspice8/30/2023 ![]() Tried adding DC values to the op amp's differential inputs to "force" the waveform up to where it should be, but nothing is panning out in the simulation. Despite my best efforts, I've not found a satisfactory way to center the output waveform around 0V. ![]() Adding a DC offset removal cap in series, as I have done with the square wave output (Red), brings the output all the way down to a peak to peak value of -9 to 0V. Basic frequency divider using a comparator to square the input wave, and a 555 in bistable mode to divide by 2, and an opamp buffer on each output.Īnyhow, THE PROBLEM: As you can see from the screenshot, the output without the bypass cap (Sawtooth, blue) is 0-9V peak to peak. The desired outcome is to take a simple, monophonic waveform and output a square/sawtooth wave at 1/2 the input frequency, essentially a sub oscillator. ![]() I need some help/input on a circuit design if you'd be so kind.īelow is an LTSPICE screenshot for a circuit I'm working on.
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