555 jewelry small electronic circuit diagram

Posted on Mar 28, 2007

Circuit as shown by 555 and the light emitting tube. 555 and R1, R2, C1 composition astable multivibrator, the oscillation frequency f 1.44/(R1 + 2R2) C1, the vibration frequen

555 jewelry small electronic circuit diagram
Click here to download the full size of the above Circuit.

cy of about 2Hz, flashes twice per second. If LED1 ~ LED4 choose different colors of light-emitting diodes, add luster. R3, R4 current limiting resistor.

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