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LED torch using MAX660

2014-12-05 15:47  
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Description.
This is a simple LED torch circuit based on IC MAX660 from MAXIM semiconductors. The MAX 660 is a CMOS type monolithic type voltage converter IC. The IC can easily drive three extra bright white LEDs.The LEDs are connected in parallel to the output pin 8 of the IC. The circuit has good battery life. The switch S1 can be a push to ON switch.

Circuit diagram with Parts list.

led-torch-using-max660

Notes.

Assemble the circuit on a general purpose PCB.The IC must be mounted on a holder.The circuit can be powered from two torch cells connected in series.The capacitors C1 and C2 must be Tantalum type.The diodes D1 to D3 must be of 1N4148.


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