My Light Diagram

This is the Simple 12V Portable and Mobile Power Supply Schematic .This type of power supply can be built quite inexpensively and needs only a minimum of circuitry. This circuit will give output current of 1 amp, well stabilized and smoothed. Simple 12V Portable and Mobile Power Supply Schematic The smoothing and regulation is provided by IC1 7812 which is a 12V monolithic voltage regulator. Thisportable power supplyunit incorporates output current limiting and is therefore not damaged by accidental short term short circuits or other forms of output overloading.   components Resistor1/3 watt 5% R1 1.8k Capacitors Cl 2200uF 25V electrolytic C2 100nF polyester (C280) C3 100nF polyester (C280) Semiconductors ICI uA78I2 (12 volt 1 amp positive regulator) D1 to D4 1N4002(4 off) Switch S1 DPST toggle type Transformer T1 Standard mains primary, 15 — 0 — 15 volt 2 amp secondary

This portable solar lantern circuit uses 6 volt/5 watt solar panels are now widely available. With the help of such a photo-voltaic panel we can construct an economical, simple but efficient and truly portable solar lantern unit. Next important component required is a high power (1watt) white LED module. When solar panel is well exposed to sunlight, about 9 volt dc available from the panel can be used to recharge a 4.8 volt /600 mAh rated Ni-Cd batterypack. Here red LED (D2) functions as a charging process indicator with the help of resistor R1. Resistor R2 regulates the charging current flow to near 150mA. Solar Lantern Circuit Schematic Assuming a 4-5 hour sunlit day, the solar panel (150mA current set by the charge controller resistor R2) will pump about 600 – 750 mAh into the battery pack. When power switch S1 is turned on, dc supply from the Ni-Cd battery pack is extended to the white LED (D3). Resistor R3 determines the LED current. Capacitor C1 works as a buffer. Note: After con...

This portable solar lantern circuit uses 6 volt/5 watt solar panels are now widely available. With the help of such a photo-voltaic panel we can construct an economical, simple but efficient and truly portable solar lantern unit. Next important component required is a high power (1watt) white LED module. When solar panel is well exposed to sunlight, about 9 volt dc available from the panel can be used to recharge a 4.8 volt /600 mAh rated Ni-Cd batterypack. Here red LED (D2) functions as a charging process indicator with the help of resistor R1. Resistor R2 regulates the charging current flow to near 150mA. Solar Lantern Circuit Schematic Assuming a 4-5 hour sunlit day, the solar panel (150mA current set by the charge controller resistor R2) will pump about 600 – 750 mAh into the battery pack. When power switch S1 is turned on, dc supply from the Ni-Cd battery pack is extended to the white LED (D3). Resistor R3 determines the LED current. Capacitor C1 works as a buffer. Note: After con...