This is meant for use by tribal/rural children to light up a book; there are better led lights in the market for around Rs.500 [d.light],for Rs.200 [Thrive]. The current from this supply could be specified at around 20% of battery AH, and the battery may be charged until both the LEDs stop glowing.

In the shown 10 watt to 50 watt SMD solar LED light circuit with automatic charger above, we see the following stages:This is a pilot project for me to venture into this field. You can count me to be a big zero in electrical knowledge. ) Due to its straightforward and relatively cheaper design the system can be suitably used for village street lighting or in other similar remote areas, nonetheless this by no means restricts it from being used in cities also. Main Features of this system are: I along with a colleague have made some lights with 7V EW high power batteries and 2x20mA pirahna Leds and tested them-they lasted for over 30 hours of continuous lighting adequate to light up a book from half-meter distance; and another with a 4v sunce battery and 1watt 350A LED giving enough light for cooking in a hut.

Using the link below, you can search your cars manufacturer and model and be able to plug in to your connector. Here we employ an identical design for the sensing of the battery levels and for enforcing the required switching of the battery across the solar panel and the connected load.Hi, thank you for everything you do to help people out! My son would like to create a science fair experiment where he can show an electric car running on a solar panel only during the day while charging a battery and running on battery only during the night. For this, we planned to have a small solar panel connected to a battery and motor in parallel (see the attached drawing).

The unique circular design of Powerowl's 16-bay charger makes it an elegant way to blend functional electronics into modern decor. While it may save less space than more compact chargers, it does allow you to plug in as many as 16 AA or AAA batteries one by one, with a small light for each battery to indicate its status. For example, if the open circuit voltage of your solar panel is 20V and the battery to be charged is rated at 12V, and if you connect the two directly would cause the panel voltage to drop to the battery voltage, which would make things too inefficient. As I said, I am a big zero in field of electricity. So, please help me with the expected setup cost also. The Design The blue flashing LED light will flash as soon as it is the view of a bright light or sunlight, this doesn’t specifically mean it is charging. It just means that it is ready to charge when plugged in in its current position in the sun. Please sir can you make me a 12v, 28.8AH lithium ion battery,automatic charge controller using solar panel as a supply, which is 17v at 4.5A at max sun light.The last line in the request suggests an LED version to be designed for replacing and upgrading the existing CFL fluorescent lamps. The same may be implemented by simply eliminating the battery and the inverter and integrating theLEDs with the solar regulator output, as shown below: The design also includes practical advantages, like vents built into each bay to keep temperatures lower while charging is in process. Overheating shouldn't be a big problem, as the charge current is low compared to other home chargers. You'll typically leave it running overnight to get multiple standard AAs to the total capacity. The two LM 338 stages are configured in standard current regulator modes with using the respective current sensing resistances for ensuring a current controlled output for the relevant connected load.

Again since the total watt hour fr the entire day is calculated to be around 960 watts, dividing this with the battery voltage (which is assumed to be 12 V) we get 960/12 = 80, that's around 80 or simply 100 AH, therefore the required battery needs to be rated at 12 V, 100 AH for getting an an optimal performance throughout the day (12 hours period).Once this level is reached the emitter follower simply inhibits any further charging of the cell thus preventing any possibility of an over charge. Cold weather slows down the chemical reactions inside the cells and even the summer heat can speed up the battery ageing process - leading to reduced performance or failure. If you are only doing short journeys or not using the car often, the battery might not have a chance to be recharged by the engine, and eventually you’ll need a top-up or a jump start – usually at the most inconvenient time. Connecting them directly would drag the panel voltage to the battery level making things inappropriate. Another associated disadvantage of the earlier circuit is its low power spec which restricts it from using high power batteries and LEDs.