Couple of weeks ago somebody was looking for an LED circuit for a Star Trek model. Was doing some thinking at work (mindless job), and got an idea...
If I could control the brightness of some blue LEDs in relation to the charge of the capacitor in a disposiable camera flash. Have some unfortunate problems to get past... The flash runs off a 1.5 volt battery, and fries off 3 volts. The blue LEDs I think were 3, maybe 3.4 volts. The flash capacitor is 160 volts (takes about 12 secs to charge).
Wiring up the flash, to make it a strobe is simple (done several, SCR triggered by the neon 'ready' light). An LM317T gets very hot when trying to drop 6 volts down to 1.5 volts.
Anyway, posting this for ideas on get the blue LED's brightness to increase with the capacitor charge, and hopeful be spared getting shocked from poking around too much.
If I could control the brightness of some blue LEDs in relation to the charge of the capacitor in a disposiable camera flash. Have some unfortunate problems to get past... The flash runs off a 1.5 volt battery, and fries off 3 volts. The blue LEDs I think were 3, maybe 3.4 volts. The flash capacitor is 160 volts (takes about 12 secs to charge).
Wiring up the flash, to make it a strobe is simple (done several, SCR triggered by the neon 'ready' light). An LM317T gets very hot when trying to drop 6 volts down to 1.5 volts.
Anyway, posting this for ideas on get the blue LED's brightness to increase with the capacitor charge, and hopeful be spared getting shocked from poking around too much.