LM2596 DC-DC Buck Converter Step Down Power Supply Module with Digital Voltage Display

This is a cycle delay timer module with an LED display. The module adopts MCU as the main chip, so it has high timer precision and reliable performance. Its working voltage is DC 12V and its working current is 50mA. You can use it to control the reciprocating stroke, or repetitive power on and off for equipment and products burn-in tests. Moreover, it can be widely used in timer operating equipment, repetitive testing circuit, and fish tank intermittent pumps. Specifications of 2 Button 12V Dc Programmable Adjustable Timer Relay Module: Product Name: 2 Button 12v Dc Adjustable Timer Relay Module Working voltage: DC 12V Source: DC4V ~ 20V (positive trigger common power button, PNP sensors, PLC signals, etc.) Output capability: You can control the DC 5V~30V 10A & AC 220V 10A Quiescent Current: 20mA, working current: 50mA Life: more than 10 million times; Working temperature: -40 ~ 85’C; Dimensions: 64.2mm * 34.8mm * 18.5mm Features of 12v Dc Digital LED Display Programmable Timer Switch Trigger Cycle Module: anti-reverse voltage input circuit, worry-free wiring. Signal input optocoupler isolation, anti-interference ability. Set the parameters of power and permanent memory. Powerful flash MCU online programming capabilities, according to user needs can contact the manufacturers to customize the functionality. Receives a trigger signal to start the countdown, while the relay, timing the end of the relay to stop working, time to recover to the set, waiting for the next trigger. Instructions of 12v Digital LED Timer Module Adjustable Timer Relay Time Control Switch Trigger Timing Board: Click K1 enter the time setting, one hundred digital starts flashing, then press K2, one hundred the number of changes; then click K1 ten digital start flashing, then press K2, the tens digit changes; then click K1 bit digital start flashing, then press K2, single-digit change; then click K1, exit the setting, LED no longer flashes. Normal digital tube display, press K2, shifting the decimal point, a decimal point indicates 0-999 minutes in 10 bit from 0 to 99.9 seconds with no decimal point represent 0-999 seconds; to this time setting is completed.

4A Buck Boost Converter Module Adjustable Step Up and Step Down Function with LCD Display Power (HW-140) Function Description: The module has IN/OUT, ON/OFF two buttons: IN/OUT button switches input voltage and output voltage display, long press can switch output current output power display; ON/OFF button control output ON or OFF, long press can Set the default output status of the next power-on to be ON or OFF. CC is the current setting potentiometer, clockwise rotation, can increase the set current, when the load current reaches the set current, enter the constant current state, the CC constant current indicator (red) lights up; the right CV is the voltage setting The potentiometer rotates clockwise to increase the output voltage. The ON indicator is an output status indicator that lights up when there is voltage at the output, otherwise it is off. Instructions: 1. Use as a common buck-boost module with overcurrent protection (1) Adjust the CV constant voltage device so that the output voltage reaches the voltage you want. (2) Use the multimeter 10A current file to measure the output short-circuit current (directly connect the two test leads to the output terminal), and adjust the CC constant current potentiometer to make the output current reach the predetermined overcurrent protection value. (3)(For example, if the current value displayed by the multimeter is 2A, then the maximum current can only be 2A when you use the module, and the red constant voltage constant current indicator will be on when the current reaches 2A, otherwise the indicator will be off) Note: When using in this state, there is a current sampling resistor at the output, there will be a voltage drop of 0~0.2V after the load is connected, and at the same time, the input wire and the output wire will have a certain line voltage drop when the current is large. This is normal! 2. Use as a battery charger Modules without constant current function cannot be used to charge the battery. Because the voltage difference between the battery and the charger that consumes electricity is too large, the charging current is too large, causing damage to the battery. Therefore, the battery should be used at the beginning. Stream charging, automatically switch back to constant voltage charging when charging to a certain extent electronicstore.pk

he DC-DC Step-Down 9A XL4016 voltage converter has the function of delivering a constant output voltage lower than the input voltage against variations in the input or load voltage. It supports output currents of up to 9A, input voltage between 8V to 40V and output voltage between 1.25V to 36V. The output voltage is selected by a multiturn potentiometer