Constant Current Constant Voltage Power Supply Circuit

The lt3741 is a synchronous buck dc dc controller designed to regulate output currents up to 20a and output voltages up to 34v with a current regulation accuracy of 6 and a voltage accuracy of 1 5.

Constant current constant voltage power supply circuit. A constant voltage power supply receives standard line voltage 120 277vac. Constant voltage power supply circuit for many electronic application circuits we need constant voltage power supply source when we design a electronic product we should keep in mind that different voltage standards are followed by different countries. Constant voltage drivers switch this alternating current voltage vac to a low direct current voltage vdc. This is the type of power that is typically output from your wall outlets around the home.

Aceirmc constant current cc cv buck converter module dc 6 40v to 1 2 36v 20a 300w adjustable step down voltage regulator power supply module with short circuit protection function 3 5 out of 5 stars 12. With a large heatsink this circuit can handle a lot of power. The constant current source currently does not have a dedicated case but instead uses an open style to demonstrate the construction. Circuit before wired up.

I easily get continuously adjustable output voltage 1 30v and current 0 6a which is pretty enough for circuit testing and other things i m also using 7805 voltage regulator ic for 5v constant voltage and current. Constant current and current limit are two different thing in constant current you don t set the output voltage it is automatically adjusted to provide the desired current to the load on the other hand in the current limit you set the voltage and there is a limiter that doesn t allow the load to get more current that the specified one. Input voltage 12v dc. This circuit despite outputting large currents uses very low voltages less than 12v so this circuit is very safe unlike mains powered projects.

This power supply has following features. So q2 will need a heatsink if there is a high led current or if the power source voltage is a lot higher than the led string voltage.