As we all know that the ultimate source of energy is Sun. it
is possible to generate current from sunlight using solar panels. These panels
convert light energy into electrical energy. A solar panel consisting of a
number of solar cells, which will produce a small amount of current but a bunch
of solar cells may contribute enough energy to power a house hold item. Here we
are discussing about SOLAR BATTERY
CHARGING CIRCUIT WITH OVERCHARGE PROTECTION.
MATERIALS REQUIRED TO
WIRE UP THIS CIRCUIT
- SOLAR PANEL
- IC LM723
- 12V BATTERY BACKUP
- NPN TRANSISTOR (MJ1000)
- ZENER DIODES (1N5821 & 1N753A)
- DIODE (1N4002)
- RESISTORS
- CAPACITORS
CIRCUIT DIAGRAM OF SIMPLE SOLAR BATTERY CHARGER
The voltage from solar panel will charge the battery to its
maximum level. So there is a possibility of damaging the battery (Load) due to
overcharging. In order to avoid this we have to introduce a Voltage Regulator using LM723 IC. The voltage regulator triggers whenever the voltage goes above
a predetermined value and it enables the NPN transistor (MJ1000) thus the
voltage from the solar panel is being grounded and no charge flows to the load.
what about the solar panel specifications that can be used with this charger
ReplyDeleteYou can use a 12V solar Panel.
DeleteI would like to know about the type of battery to be use (12v rechargeable). or is is it something else ??
ReplyDeleteYa, the battery that we used here is 12V rechargeable type.
ReplyDeleteSir i have a 9 V 200mamp pannel, how can i use it with this circuit.
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDeleteI want to know, if I don't have lm723, mj1000, 1n5821, 1n753a and 1n4002, what components can I replace for them?
ReplyDeleteNice and Simple, great article.
ReplyDeleteWhat changes should I make if I wish to charge Li-ion battery 3.7V on a 6 V / 1.2W panel ?
Thanks.
can you provide me the pdf of this project or material regarding this project
ReplyDeletecan you provide me the pdf of this project or material regarding this project
ReplyDeletecan you please provide me the material regarding this project or even pdf
ReplyDeleteHi sir, can i use the same circuit but ill be using 9v batt instead of 12v? TIA.
ReplyDeleteHi Thomas,
ReplyDeleteThank you for ne nice circuit. I was wondering if you want to scale up to large currents (so instead of one panel several ones connected in parallel) all you need to do is to change the specs of the transistor and the Schottky diode 1N5821 (it's not a Zener no?) correct ? How much current can this circuit handle ?