Ammeter

What is an Ammeter?

An ammeter is a device used to measure electrical currents and their intensity, typically expressed in amperes (A). This makes it a vital tool in diagnosing electrical problems, ensuring that circuits are operating correctly and electrical equipment is working within its safe current ranges.

How Does an Ammeter Work?

An ammeter functions as a current-measuring instrument through two primary methods: detecting the magnetic field generated by electrical flow, or calculating current based on voltage measurements across a resistor with known resistance values. To obtain accurate readings, the device must be wired in series with the circuit, allowing the complete electrical current to pass through the meter.

Ammeter vs. Voltmeter

What is the Symbol for an Ammeter?

The ammeter circuit symbol is a graphical representation of the device commonly used in schematic diagrams. It provides an easy means for engineers to quickly locate the device on the circuit without requiring a physical inspection.

The symbol is typically a circle with the “A” symbol in the middle.

Start Adding Ammeter Symbols to Your Schematic Easily With Capital X Panel Designer!

Capital X Panel Designer makes adding new ammeter symbols to your circuit diagram faster and easier! This electrical CAD software comes equipped with a library of pre-made symbols; just drag and drop the ones you need into your schematic layout, and watch your workflow improve.

Learn more about how to create custom electrical symbols.