Basically a high-efficiency dimmer, but can also be used as a flasher. In dimmer mode, the LM358 (dual op-amp) is wired to send pulses at a constant frequency. By adjusting the width of these pulses, brightness of the bulb is controlled. In flasher mode, the same potentiometer is used to control the frequency - from [...]
I has evered to play the leading role Lamp Flasher Circuit with the integrated circuit. Which be the circuit that is simple but at this time a friend someone complain to come to that want the circuit that use the transistor. I then lead this circuit has come to in rows think to you. By [...]
The 555 circuit below is a flashing bicycle light powered with four C,D or AA cells (6 volts). Two sets of 20 LEDs will alternately flash at approximately 4.7 cycles per second using RC values shown (4.7K for R1, 150K for R2 and a 1uF capacitor). Time intervals for the two lamps are about 107 [...]
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