Q, i am looking at doing PWM through a DC regulator. i dont know the PWM freq just yet, but what are the pitfalls?
crude example, power supplies are good 15vdc, light fixture bulb is rated 12vdc. if i use a "LM" style volt reg at the light fixture does the reg work ok with PWM or would i expect to see switching heating problems or failure to regulate at low % PWM ? i guess i could also clamp it using zener instead of reg, but just wanted to know more about PWM through a vreg.
crude example, power supplies are good 15vdc, light fixture bulb is rated 12vdc. if i use a "LM" style volt reg at the light fixture does the reg work ok with PWM or would i expect to see switching heating problems or failure to regulate at low % PWM ? i guess i could also clamp it using zener instead of reg, but just wanted to know more about PWM through a vreg.
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