Here is my latest brain fart. Basically a stand alone 555 used as a simple switching voltage regulator. The reference is questionable, which is the BE voltage drop of Q1 (0.6V). Anything greater than that will have current flow through the BE junction, causing the transistor to turn on, causing the 555 to turn on, which in turn turns Q2 off.
It might be better if R5 were a zener diode, but I'm going to fry... try this first.
D1 is a feedback component, it will give a quick and dirty visual indication when the 555 is on. D2 shows the power supply as on as well as providing a light load for the regulator.
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It might be better if R5 were a zener diode, but I'm going to fry... try this first.
D1 is a feedback component, it will give a quick and dirty visual indication when the 555 is on. D2 shows the power supply as on as well as providing a light load for the regulator.
.
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