Someone Electro
New Member
its not a good practice to conect LEDs directly
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it is not the number of turns ,per se , that increased the voltage ,in so little time,as much as the transformer i used, but without the increase in the number of coils , the transformer wouldnt have helped..audioguru said:Why did you use so many turns on your coils that the voltage is way too high? After shaking for several seconds the 5700uF cap charged to 30V will power an LED through a 1k current-limiting resistor for only about 10 to 15 seconds. You need to use a constant current source or PWM to keep the LED from dimming as the cap discharges, but 30V is too high for PWM since the peak LED current will be too high.
exactly ,Someone Electro said:You cod put in a seting of brightnes.
Soyou can have high brightnes and les on time and low brightnes and more on time