Specification:

Type: 4A non-isolated step up/down constant current power supply module

Input Voltage: 5.5-30 VDC (at 5V input, it can also step up down voltage, but the voltage current measurement is inaccurate; when lower than 4.7V, under-voltage )

Output Voltage: 0.5-30VDC adjustable

Output Current: 0.2-3A adjustable, enhance heat dissipation can be up to 4A

Voltage Display Resolution: 0.05V

Current Display Resolution: 0.005A

Conversion Efficiency: About 88%

Soft Start: Yes

Reverse Input : Yes

Output Back : Yes

Short Circuit : Yes

Frequency: 180KHZ

Weight: 48g / 1.7oz (approx.)

Package list:

1 * Module

4 * Plastic Supports

1 * Heat Sink

Instructions:

1. The module has IN/OUT, ON/OFF two buttons:IN/OUT button switches input voltage and output voltage display, long press to switch output current output power display;ON/OFF button control output ON or OFF, long press can set default output state is ON or OFF when powered next time.

2. CC is current setting potentiometer, clockwise rotation can increase setting current, when the load current reaches setting current, it enters constant current state, and CC constant current indicator light (red) lights up;CV voltage setting potentiometer on the right can be rotated clockwise to increase output voltage.

Current Adjustment:

1, Used as a normal step up/down module with over current .

(1) Adjust CV constant voltage potentiometer till output voltage changes to the required voltage value.

(2) Use multimeter 10A current to measure output short circuit current (connect two test probes directly to output), and adjust the CC constant current potentiometer till output becomes the expected over-current value.