Product selling points:
1. The module adopts step rectification scheme, with high efficiency, the highest efficiency up to 96%.
2. Output voltage and current are continuously adjustable
3. Input voltage up to 95V, output voltage up to 90V
4. With input anti-reverse connection, positive and negative connection does not burn
5. With soft start switch

Module parameters.
Module name: 500w buck constant voltage constant current adjustable power supply module
Module nature: non-isolated buck module
Input voltage: 12-95V
Output voltage range: 1.5-90V (only buck, not boost, the output voltage can only be low into the input voltage)
Input and output voltage difference: 2V
Output constant current: 0.3--18A (continuously adjustable,)
Output rated current: 15A
Output rated power: 400w
Input overvoltage protection: None (over-voltage is prohibited)
Operating temperature:-10~+65 degrees
Operating frequency:120KHz
Conversion efficiency: up to 96% (efficiency is related to input and output voltage, current and differential pressure)
Short circuit protection: Yes (constant current protection)
Input reverse protection: Yes (MOS tube reverse)
Output anti-reflow: no (to charge the battery, the output connected to inductive loads, such as connected to the motor must add anti-reflow diode)

Cautions:
1. If the input voltage exceeds 36V, first ON/OF switch to OF, connect the line to the power and then switch to ON (to prevent wiring fire)
2. This power supply is a step-down power supply, the output voltage can only be lower than the input voltage
3. Natural heat dissipation in the case of power does not exceed 400W, the current does not exceed 15A, there is a power limit if the output voltage is high, the input and output voltage difference is large, please drop the current to use
4. Current more than 15A, power more than 400W please add fan cooling

Voltage and current adjustment method: (using tools multimeter, a screwdriver)
Voltage adjustment: according to their desired voltage rotate the blue potentiometer on the power supply board, clockwise voltage up, counterclockwise down;
Output current adjustment: multimeter or ammeter to 20A or 10A current gear, the power supply voltage to 5V, constant current potentiometer counterclockwise turn about 10 turns, the current to the minimum with a multimeter short-circuit output, and then adjust the potentiometer clockwise to adjust the current to the required current value;;
Module current detection for the low end of the detection, please do not input the negative pole and the output of the negative pole directly with the wire short, short-circuit negative power supply is not constant current, resulting in power and need constant current power equipment damage.
Module for buck power supply can only buck can not rise, the input voltage must be higher than the output voltage.

Shipping list:
Module X1