Tag Archive: Light Dependent Resistor (LDR)

Jul 23

220V AC Powerline Light Control Switch (Automatic)

Parts List Resistor : R1 ……………………………. 8K2 R2 ……………………………. 15K R3 ……………………………… 1K R4 …………………………….. 680 R5,R6,R7……… 110v ……. 100K R5,R6,R7 …….. 220V …… 180K R8,R9,R10 ………………….. 82K Variable Resistor : VR1 ………………………… 220K Capacitor : C1 …………………… 220uF/16V C2 ………………. 0,005uF/600V Tansistor : TR1,TR2 …………… FCS 9014 Diode : D1,D2 ………………….. 1N 4002 D3 …

Continue reading »

Jul 23

Light-Controlled Alarm

  Parts List Resistor : R1 …………………………………. 47K R2 …………………………………. 330 R3 …………………………………. 150 R4,R5 …………………………….. 5,6K R6 …………………………………… 1K Variable Resistor : VR1 …………………………….. 100K Capacitor : C1 ……………………………. 0,05uF C2 ……………………….. 220uF/10V Transistor : TR1,TR3 ………………. FCS 9014D TR2 …………………….. FCS 9012H Semiconductor : SCR ……………………….. EC103D Other : LDR …………………………. Cds-05 Speaker …

Continue reading »