Ammeter Symbols

About these ammeter symbols

Ammeter is an important, electrical instrument employed for measuring electric current in a circuit that has its unit in amperes. An ammeter is essential for engineers and anyone dealing with electrical circuits. It assists in preventing overload currents in the electrical system that could damage or harm the system.

To get the best from an ammeter, understand its symbols. Knowing the different symbols helps the user measure correctly. They help users set parameters for various applications. This avoids mistakes from using other values in the measuring system. Each symbol of DC and AC provides distinct details about the functionality of the ammeter.

Direct current (DC)

The direct current (DC) symbol is represented by 'A' with a straight line over it. It implies the level of direct current flow in the circuit, Amperes. This is the ability to make the electric charge flow in a single direction.

Alternating current (AC)

The symbol for AC is 'A' with a wavy line underneath. It measures the flow of alternating current in the circuit, in Amperes.

Milliampere (mA)

The symbol mA is an abbreviation of milliamperes. It measures very low currents, specifically one-thousandth of an ampere. This is suitable for use in low-power applications.

Microampere (µA)

The µA symbol stands for micro amperes, which measure one-millionth of an ampere. This unit is crucial for protecting delicate electronic circuits.

Continuity

The continuity symbol is usually in the form of arcs or sound waves. It verifies if a circuit path is continuous and provides audible beep feedback in the process.

Frequency (Hz)

The frequency symbol which indicates the frequency of oscillation in a circuit is given in hertz 'Hz'. It is essential for analyzing AC voltage and signal properties.

Duty cycle (%)

The duty cycle symbol shows how long a signal stays high or low in each cycle. It's crucial for pulsing and timing tasks, like pulse width modulation.

Transistor gain (hFE)

The hFE symbol shows a transistor's gain and signal amplification. It's especially useful for testing and developing amplifier circuits.

Temperature (°C/°F)

The temperature symbol makes it possible for the ammeter to measure temperature with an external probe. It has a Celsius/Fahrenheit switch. It's convenient for different situations.

Resistance (Ω)

The Ω symbol was originally designated for ammeters only. This symbol measures a component's resistance to current. Its unit is ohms, indicating how much a component resists current flow.