took a bit of searching, but i came to the conclusion that this switch, as found here posted by bill, seems best
before, i had tried a switch that was all transistors and resistors... but that was a clusterfrick and it didnt work anyway.
this circuit, ive tried three times now. what happens is i push the button, i get a brief dim flash of the LED light, then its out. if i push the button too soon after that, nothing happens. the capacitor needs to recharge for about half a second before the LED will flash again if i push the button.
is the reason im not getting desired results because im using a 3.7v battery? if so, what do i modify to make this work?
this is for a homebuilt 3w headlamp. once i get it working, ill have the current LED boosted by a transistor, so when the main 3w LED cuts out from low voltage, this small led stays on for 'emergency' lighting.
before, i had tried a switch that was all transistors and resistors... but that was a clusterfrick and it didnt work anyway.
this circuit, ive tried three times now. what happens is i push the button, i get a brief dim flash of the LED light, then its out. if i push the button too soon after that, nothing happens. the capacitor needs to recharge for about half a second before the LED will flash again if i push the button.
is the reason im not getting desired results because im using a 3.7v battery? if so, what do i modify to make this work?
this is for a homebuilt 3w headlamp. once i get it working, ill have the current LED boosted by a transistor, so when the main 3w LED cuts out from low voltage, this small led stays on for 'emergency' lighting.
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