Re: For those who believe in electricity

On 4/7/2025 6:16 PM, sms wrote:

On 4/7/2025 9:28 AM, Zen Cycle wrote:
 <snip>
 

"PWM DC"? PWM by definition isn't DC. PWM generators even at maximum drive aren't 100% duty cycle (yes, effectively DC considering the response of the LED, but still not exactly DC).

 Yes. PWM is a DC voltage with varying pulse widths. It never goes below 0V like AC.
 BTW, Frank could have just used a transformer like <https:// www.amazon.com/dp/B094NRRKC1> to simulate a 6VAC dynamo, or even a 16-24VAC doorbell transformer with some resistors to divide the voltage and limit the current...

I considered that. I'm not an electronics guy, so I didn't want to get into calculations to mimic the current limiting reactance of a typical bicycle dynamo. It was easier to chuck a roller into my drill press and use it to drive an actual dynamo.
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- Frank Krygowski