555 jewelry small electronic circuit diagram


Posted on Mar 28, 2007    6558

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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