โมดูลลดแรงดัน Buck converter 6.5v-40v เป็น 5V usb พร้อมจอ Step Down Module DC 6.5V-40V to 5V USB + Voltmeter

 

1. Ultra-wide voltmeter range: DC4.5~40V

 

2. 5V/2A output current capability ( 5.0V voltage can be output stably when the input voltage is 6.5~40V )

 

3. One key ("output enable" key) switches the USB output, one key ("low power consumption" key) enters ultra-low power consumption

 

4. The on-board voltmeter can be self-calibrated, and there will never be a problem with the voltmeter! !

 

5. With reverse connection protection, reverse connection does not burn

 

6. With over-current and over-temperature protection

 

7. With USB power indicator

 

8. With terminals, easy access to the line

 

9. High efficiency, low ripple

 

10. Module size: length 58mm width 21mm height 10mm

 

11. Weight: 13g

 

 

 

 

After the module is powered on, the voltage can be detected in real time. When you need to charge digital products such as mobile phones, Ipads , MP3s , etc., just touch the "output enable" button. At this time, the USB power indicator lights up, and the USB outputs 5.0V voltage; When you need to turn off the digital tube, touch the "low power consumption" button, the module will enter the ultra-low power consumption standby mode, and the USB output will be turned off accordingly.

 

 

The ultra-wide input voltage can be used for cars / battery cars / motorcycles to monitor the battery voltage, grasp the battery status in time, and can be used for various voltage measurement purposes.

 

5.0V , 2A output current capability, enough to meet various USB devices, the voltage is very stable.

 

Note: This module defaults to D+ D- short-circuiting, which is compatible with most mobile phone charging, and reserves the installation positions of various mobile phone identification resistors. If you need to add identification resistors, please cut off the wires connecting D+ D- and add them by yourself. That's it.

 

 

Samsung: It is more complicated. Some general designs are not special, and some are shorted to D+\D-.

Nokia: D+\D- is shorted

HTC: D+\D- is shorted

Microsoft Zune: D+\D- is shorted

BlackBerry, MOTO, Sony, Meizu: some D+\D- are shorted, some have no identification circuit, general

Apple: identification Resistor, backward compatible with short- circuit innovation :

identification of resistance, incompatible with short- circuit Of course, special circumstances cannot be ruled out. In addition to the Apple identification circuit, Apple's circuit is compatible with D+ and D- short circuits.

 

 

 

The resistance is: 0805 package 1% accuracy

 

49.9K*2 logo 4992

 

75K*1    logo 7502

 

43K*1    logo 4302

 

Note: Iphone D+ is connected to 75K D- is connected to 43K (as shown in the picture), compatible with D+ D- short circuit

 

IPAD D+ road is connected to 43K D- road is connected to 75K (D+D- exchange)

 

 

1. When the on-board voltmeter is working normally, press and hold the " Output Enable " button for 2 seconds and then release it, the voltmeter will flash, and the voltage adjustment mode will be entered;

 

 2. Tap the " Output Enable " button, the voltage will increase by one unit, tap the " Low Power " button, the voltage will decrease by one unit; since the voltage value of one unit is less than 0.1V , you need to press 1-5 continuously You can see that the voltmeter has changed by 0.1V after several times, and the specific number of consecutive keys depends on the currently displayed voltage value.

 

3. After the voltage adjustment is completed, press and hold the " Output Enable " button for 2 seconds and then release it. At this time, the voltage calibration mode can be exited, and all parameter settings will be automatically saved after power off .

 

Note: In this adjustment method, you only need to calibrate once to get the voltage value on the entire voltage range. This function is designed to meet your higher accuracy requirements, please use it with confidence.