1. Adjust the "W 103" potentiometer to set the output voltage to the voltage value you need according to your battery or LED. For example, the voltage of 10 strings of LEDs is adjusted to 37V. (Counterclockwise voltage is adjusted to increase and clockwise voltage is adjusted to decrease) 

2. Counterclockwise adjust the "W 502" potentiometer for about 30 turns to set the output current to the minimum. Connect the LED and adjust the RV2 potentiometer to the current you need. For battery charging, discharge the battery and connect it to the output, and adjust RV2 to the current you need. (When used for charging, you must use a fully discharged battery to adjust it accurately, because the more power the battery has, the smaller the charging current.) (Counterclockwise current is adjusted to decrease, clockwise current is adjusted to increase) Please do not use short-circuit to adjust the current. The circuit structure of the boost module cannot be adjusted by short-circuit. Application range 1. DIY a voltage regulator, input 12V, and the output can be adjusted from 12-50V 2. Power your electronic equipment, and set the output value according to your system voltage.

3. As a vehicle power supply, it can power your laptop, PDA or various digital products. 

4. DIY a high-power laptop mobile power bank: Equipped with a large-capacity 12V potassium battery pack, your laptop can be lit wherever you go.

 5. Solar panel voltage stabilization.

 6. Charge batteries, carp batteries, etc. 

7. Drive high-power LED lights.