How to wire Chinese 100v/10A voltage and ammeter. when you are buying a Dc voltage and current meter. you don’t get sufficient information about the connection of the digital meter. Insufficient information will make complications or doubts about connections.
so, I decided to share the exact circuit diagrams to clear the doubts. First, we need to know how it’s working. The display working with the Dc voltage source. don’t try to give the direct AC power supply. The direct power supply from the Ac source will dangerous to you, and it may explode. so be knowledgeable about the input voltage supply.
The display consists of a seven-segment display and an electronics board to sense the voltage and ampere. The device consist 5 wires. its make you confusing.
- The narrow red and black wire. The red wire is the input voltage for working the display and black is negative wire.
- Next gauged red and black wire. It is not the input power supply, it is for sensing the ampere of the output supply. The black wire connected to the input negative voltage and the red wire is negative for output supply. ( don’t miss understand the color of the wire ).
- The next one is the yellow wire, its for sensing the input voltage. This wire is connected to the positive connection of sensing voltage.
