TO STUDY A POSITIVE FEEDBACK CIRCUIT OF AN AUDIO …

PROMA KITS. AUTOMATIC NIGHT LAMP (3V DC) Automatic Night Lamp means bulbs is on automatically in night and is off in day light. All this is possible with the help of LDR. LDR is a light dependent resistor. When lights falls on LDR. Then LDR shows a low resistance and in dark LDR shows a high resistance. ................
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