solar charge controller circuit

For the most part you do need a fuse between a solar panel and its charge controller as fuses and circuit breakers protect the wiring from getting too hot. PWM charge controller In this case the charge voltage imposed on the solar panel can be found by drawing a vertical line at the voltage point equal to Vbat plus 05 V.

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Why do you need a solar charge controller.

. This also prevents any appliances from catching fire or getting damaged should a short circuit occur. Most 12 volt panels put out about 16 to 20 volts so if there is no regulation the batteries will be damaged from overcharging. It regulates the current flowing from the solar panel into the battery bank to avoid overcharging the batteries.

The PWM charge controller Fig 7. It regulates the voltage and current coming from the solar panels going to the battery. A charge controller or charge regulator is basically a voltage andor current regulator to keep batteries from overcharging.

A solar charge controller frequently called a regulator is similar to a regular battery charger ie. However if the solar panels are wired in series a fuse is often not necessary. The additional 05 V represents the voltage loss in the cabling and controller.

If you dont need to understand the whys scroll to the end for a simple flow chart. As with a regular quality battery charger.

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