I bring to your attention the scheme of a highly stable laboratory PWM generator with a wide frequency range on the TL494 chip. It is designed to test and calculate pulse transformers. It can also be used when checking and debugging digital circuits as a clock generator.
![Highly stable laboratory PWM generator with a wide frequency range on TL494 494osc10](https://i.servimg.com/u/f91/20/30/56/09/494osc10.png)
![Highly stable laboratory PWM generator with a wide frequency range on TL494 494osc10](https://i.servimg.com/u/f91/20/30/56/09/494osc10.png)
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TL494_osc.zip
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