Jul 24

Fluorescent Tube Lamp Emergency Light

Parts List Resistor : R1,R2,R4,R7 …………………………. 1K R3 ……………………………………… 470 R5 ……………………………………. 220K R6 ……………………………………… 47K R8 ……………………………………… 220 R9 …………………………………………. 1 R10 …………………………………….. 180 R11 …………………………………….. 820 R12 …………………………………….. 270 R13 ………………………………………. 47 R14 …………………………………….. 10K Variable Resistor : VR1 ……………………………………… 5K Capacitor : C1 …………………………….. 220uF/16V C2 …………………………….. 100uF/25V C3 …………………………….. 470uF/16V C4 …

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Jul 24

Selectable Power 40W DC Fluorescent Lamp Converter

Parts List Resistor : R1,R2,R3,R4 …………………… 330 R5,R6 ……………………………. 560 Capacitor : C1 …………………………… 0,047uF C2 ……………………….. 470uF/16V Transistor : Tr1 …………………………. MJ 4502 Transformator : T1 ……………………………….. T-40  

Jul 24

Simpler Selectable Power DC Fluorescent Lamp Converter

Parts List Resistor : R1 …………………………….. 10K R2 ………………………………. 47 R3 …………………………….. 270 R4 …………………………….. 820 Capacitor : C1 …………………… 0,1uF/100V C2 ……………………. 470uF/16V Diode : D1 ……………………….. 1N 5402 Transistor : TR1 ………………………. C 1061 Transformator : T1 …………………………… T-20  

Jul 23

Automatic 12V Battery Charger

Parts List Resistor : R1,R4,R7 …………………………. 1K R2 ………………………………… 470 R3,R5 ……………………………. 47K R6 ………………………………… 220 R8 …………………………………… 1 Variable Resistor : VR1 ………………………………. 5K Capacitor : C1 ………………………. 220uF/16V Diode : D1 ……………………………. 1N 5402 D2,D4 ……………………….. 1N 4148 D3 ………………………………… LED D5 ……………………………. ZD 6,2V Transformator : T1 …………………. P  :  0-110V/220V T1 …

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Jul 23

5A 12V Lead Acid Automatic Battery Charger

Parts List Resistor : R1 …………………………………… 470 R2,R3,R4,R7 ………………………… 1K R5,R6 ……………………………….. 47K R8 ……………………………………. 220 Variable Resistor : VR1 ……………………………………. 5K Capacitor : C1 …………………………….. 100uF/25V Diode : D1,D2 ……………………………. 1N 4148 D3 ……………………………………… LED D4 …………………………………. ZD 6,2V D5,D6,D7,D8 …………………… 1N 4002 D9 …………………………. MDA 3502 – 4 Semiconductor : SCR1,SCR2,SCR3 ……………. EC …

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