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it is based on ldr (light dependant resistor) the system makes use of a sensor for detecting the coin and a microcontroller that counts the coins and shows the count on a 7-segment display. When you close the load switch provided in the circuit, the relay energises to connect the load and the coin count on display starts decrementing. When the count decrements to zero, the relay de-energises to disconnect the load
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Posted:Oct 6, 2012
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