Hi to all. I have built a circuit that it can increase the voltage quite successfully, and with a 1/100 voltage divider i can actually measure the volts with a multi-meter. But i want to change the multi-meter with that small 3 wire voltmeter. Here is the circuit that i have built.
The 3 terminal mini voltmeter got 3 wires. Black is ground, yellow is voltage reading and red is Vin (5v to 12v). In order to work,i have to connect the ground both the 12v Battery and the Voltage Divider in order to get a voltage indication. What i want to ask is if there is any problem if i connect together the negative from the battery and the negative from the Voltage Divider, as you can see below.
Thanks
The 3 terminal mini voltmeter got 3 wires. Black is ground, yellow is voltage reading and red is Vin (5v to 12v). In order to work,i have to connect the ground both the 12v Battery and the Voltage Divider in order to get a voltage indication. What i want to ask is if there is any problem if i connect together the negative from the battery and the negative from the Voltage Divider, as you can see below.
Thanks