- Joined Oct 23, 2021
Hello, I have to design a single op amp circuit that has only +15v, -15v and GND as input and outputs a symmetrical PWM signal (+V and -V) with adjustable frequency and duty cycle. I have something that works partly but not completely, I can adjust the duty cycle from ±60% to ±100% but af that the duty cycle potentiometer also adjusts the frequency, the frequency potentiometer seems to work. Also the output is not really symmetrical. The values on my drawing are not really calculated because it doesn't work yet.
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