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Voltage Step Down Regulator, LM2596 DC-DC 4-40V 3A Maximum Output Adjustable Converter Module, Epoxy Resin For Constant Voltage Control Voltage

<ul><li>Touch the button to switch the measurement input or output voltage, and the indicator light shows which voltage is being measured, and keep the last setting, even if it is powered off and then on.</li><li>The voltmeter can be turned off by pressing and holding the switch for more than 1 second and less than 4 seconds.</li></ul>

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Specification: Features: With voltmeter display, voltmeter error ± 0.1V, range 0 ~ 40V. Touch the button to switch the measurement input or output voltage, and the indicator light shows which voltage is being measured, and keep the last setting, even if it is powered off and then on. The voltmeter can be turned off by pressing and holding the switch for more than 1 second and less than 4 seconds. With terminal block, no soldering iron can be used conveniently, and the wire bonding point is retained. The input voltage is 4.0~40V the input voltage must be higher than the voltage to be output by more than 1v.. Adjustable output voltage range from 1.25V to 37V continuously adjustable input voltage must be higher than the voltage to be output by more than 1V. The maximum output current can be as high as 3A, and the common stable operating current is 2A. Using 150KHz internal oscillation frequency, it belongs to the second generation of switching voltage regulator, with low power consumption and high efficiency. Specification: Material:Epoxy Resin Voltage Meter :Error+-0.1V;Measuring Range:0~40V Input Voltage:4~40V Adjustable Output Voltage:1.25~37V Maximum Output Current: 3A Stable Current: 2A Internal Oscillation Frequency: 150KHz Package List: 1xModule Users Manual: Input and output voltage measurement error calibration function, long press the switch for more than 4 seconds, after entering the hand, it will enter the voltage measurement error calibration function. At this time, the in light is on calibration input terminal, and the digital tube flashes to display the correction value factory parameter is 0.0 At this time, press the button to change this value the value range is -0.5~0.5, the unit is V, the positive number means upward calibration, and the negative number means downward calibration. After adjusting the comparison value of the input end, press and hold the button for more than 2 seconds, then release the error calibration after the release, then the out light is on calibration output, and the calibration value of the output is displayed. The adjustment method is the same as the input. After the comparison value at the output end, press and hold the button for more than 2 seconds. After releasing the hand, save the set value and return to the normal display voltage. The set correction value takes effect immediately and the power is not lost. Note: The input voltage is lower than 4V, the onboard voltmeter does not work and does not display.

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