DC-DC DC nagy teljesítményű, állítható digitális kijelző, lefelé tartó tápegység modul állandó feszültség és állandó áram LCD képernyő
DC-DC DC High-Power Adjustable Digital Display Step-Down Power Supply Module Constant Voltage and Constant Current LCD Screen
Description
nstructions for use: Press the "Set" button to cycle through 4 display modes, the corresponding indicator will be on or off, press the "OK" button to save and exit, and press the "OK" button alone to turn on and off the backlight of the LCD screen.

Instructions:

(1) Adjust the "constant voltage potentiometer ADJ-V" to make the output voltage reach the voltage value you want;
(2) Directly short-circuit the output terminal of the module (just find a thick wire to short-circuit the output terminal), at this time adjust the "constant current potentiometer ADJ-I" to make the displayed current value reach the preset overcurrent protection value; ( For example, the current value displayed by the on-board ammeter is 4A, then the maximum current of the module is limited to 4A, and the red indicator light is on when the current reaches 4A)

(3) Connect the load and work.
2. Use as a battery charger
Instructions:

(1) Determine the floating voltage and charging current of the battery; (If the lithium battery parameter is 3.7V/2200mAh, then the floating voltage is 4.2V, and the maximum charging current is 1C, which is 2200mA)
(2) Under no-load conditions, adjust the "constant voltage potentiometer ADJ-V" to make the output voltage reach the float voltage;
(3) Directly short-circuit the output terminal of the module (just find a thick wire to short-circuit the output terminal), at this time adjust the "constant current potentiometer ADJ-I" to make the displayed current value reach the preset charging current value;
(4) The default charging current of the rechargeable lamp is 0.1 times the charging current; (The current of the battery is gradually reduced during the charging process, and gradually changes from constant current charging to constant voltage charging. If the charging current is set to 1A, then when the charging current is set to 1A, When the charging current is less than 0.1A, the blue light is off and the green light is on, and the battery is fully charged at this time)
(5) Connect the battery and charge it.
3. Use as a constant current LED driver module

(1) Determine the operating current and maximum operating voltage you need to drive the LED;
(2) Under no-load conditions, adjust the "constant voltage potentiometer ADJ-V" to make the output voltage reach the LED operating voltage;
(3) Directly short-circuit the output terminal of the module (just find a thick wire to short-circuit the output terminal), at this time adjust the "constant current potentiometer ADJ-I" to make the displayed current value reach the preset LED working current;

(4) Connect the LED and test the machine.


Note that the constant current adjustable current must be in constant current mode only when the actual load output current is greater than the set current, otherwise it will work in a constant voltage state. It is not the current that is adjusted to 2A, that is, it will become 2A if any equipment is connected. Know.
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