Monday, November 14, 2016

3V6/1W White LED Portable Solar Lantern Circuit

Electronic Kit School. - There are many electronic circuit that designed to result the best light with powered by panel solar now. One circuit that can produce portable solar lantern using 3V6/1W white LED is shown look like in Figure 1 below. 

With the main or major component used are solar panel, 3v6/1W white LED, Battery re-charger and other component complemented. This circuit is very simply because only need few component as needed. And now you can build this circuit in real condition easily.


Figure 1. 3V6/1W White LED Portable Solar Lantern Circuit

Component Parts

  1. Panel Solar
  2. Diode
  3. Resistors
  4. LED
  5. Switch
  6. NiCad Battery
  7. Capacitor
  8. 3V6/1W White LED

Circuit like in Figure 1 above show you about the 3V6/1W White LED Portable Solar Lantern Circuit. From Electroschematics site describe that 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.

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.


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