Hi
A while back there was an interesting topic about a 2 transistor Buck LED driver:
I tried the LT Spice simulation, but it just runs in linear mode, no switching. Do anyone remember this thread and why it does not run?
Tom Swift had the same problem in the original thread:
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I changed R1 to 5.1 ohms. Now the circuit fails to oscillate at any supply voltage.
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The LTSpice file:
Well, I think the idea is nice, so I would like to use it with a voltage output
Instead of the current being set by R1, I can use that for the peak current, and wrap a loop outside that to provide voltage regulation.
Or maybe I could let it run bang bang mode (full duty, or 0 duty)
Cheers
Klaus