Solar Panel Controller Circuit

The 5v relay is the main.

Solar panel controller circuit.

Parts list for the low drop solar panel charger circuit. Solar charge controller specifications. After finishing the circuit you need to set the upper and lower limits. 16w includes power dissipation of d3 typical dropout voltage.

Q3 2n3904 or the majority of small signal npn. The input is given to the shown input points of the ic and the output for the battery received at the output of the ic. 18 to 20v output voltage range. The pot or the preset is used to accurately set the voltage level that may be considered as the safe value for the battery.

This is the driving circuit of the diy automatic solar charge controller. Q4 2n2905a or comparable medium power 500ma pnp q5 2n3442 or 2n3055 high power npn one white led 2 7 volt d1 1n4148 or just about any small silicon diode. The shown solar panel regulator circuit is framed as per the standard mode of the ic 338 configuration. 7 to 14v adjustable not recommended for 6v applications max power dissipation.

Diy automatic solar charge controller step 1.