Blinking LED Circuit

235

03:00:53

Blinking LED circuit. The 100ohm resistors are choose for standard LED (2,5V/25mA) and for 5V power supply. In you want change a voltage supply and/or type of LED you mast re-calculating a resistors impedance. This scheme has been designed and tested: works without problems for years.... The PNP are BC548.

published 9 years ago

BillyT

9 years ago

Standard relaxation oscillator, working well, I'm not sure where the standard led values quoted come from, according to ElectroDroid, the official values are; standard red 1.7v @ 10mA, bright red 2.0v @ 10mA, super bright red 1.75v @ 20mA. Anyway here is your circuit, tidied up a bit. http://everycircuit.com/circuit/4643533673988096

cheikhne

9 years ago

Che

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