kinarfi
Well-Known Member
![Untitled.png Untitled.png](https://www.electro-tech-online.com/data/attachments/81/81394-99a52a8d5b7749f145994ecd5bb3ff3c.jpg)
I can make an adjustable current limit out of a LM317 and a constant current out of a JFET, J310, but I don't know how to make an adjustable zener. Any one have any suggestions?
Thanks,
Jeff
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I've seen much much simpler sawtooth circuits, but then they may fall short of your design requirements. So, it would be worthwhile telling us your design requirements, and perhaps we can help come up with an acceptable circuit rather than concentrating on a single detail (the adjustable zener) that may ultimately be unnecessary.This is a simple saw tooth wave form as part of a PWM design that I am working on.