Below is the list of measuring instruments used in electrical and electronic work.
Name | Purpose |
---|---|
Ammeter (Ampermeter) | Measures current |
Capacitance meter | Measures the capacitance component |
Current clamp | Measures current without physical connection |
Curve tracer | Applies swept signals to a device and allows display of the response |
Cos Phi Meter | Measures the power factor |
Distortionmeter | Measures the distortion added to a circuit |
Electricity meter | Measures the amount of energy dissipated |
ESR meter | Measures the equivalent series resistance of capacitors |
Frequency counter | Measures the frequency of the current |
Leakage tester | Measures leakage across the plates of a capacitor |
LCR meter | Measures the inductance, capacitance and resistance of a component |
Megger tester | Measures Resistance of an Winding of Motor or Generator And Measures Earthing's Resistance |
Microwave power meter | Measures power at microwave frequencies |
Multimeter | General purpose instrument measures voltage, current and resistance (and sometimes other quantities as well) |
Network analyzer | Measures network parameters |
Ohmmeter | Measures the resistance of a component |
Oscilloscope | Displays waveform of a signal, allows measurement of frequency, timing, peak excursion, offset, ... |
Psophometer | Measures AF signal level and noise |
Q meter | Measures Q factor of the RF circuits |
Tachometer | Measures speed of motors |
Signal analyzer | Measures both the amplitude and the modulation of a RF signal |
Signal generator | Generates signals for testing purposes |
Spectrum analyser | Displays frequency spectrum |
Sweep generator | Creates constant-amplitude variable frequency sine waves to test frequency response |
Transistor tester | Tests transistors |
Tube tester | Tests vacuum tubes (triode, tetrode etc.) |
Wattmeter | Measures power in a circuit |
Vectorscope | Displays the phase of the colors in color TV |
Video signal generator | Generates video signal for testing purposes |
Voltmeter | Measures the potential difference between two points in a circuit. (Includes: DVM and VTVM) |
VU meter | Measures the level of AF signals in Volume units |
Cathode Ray Oscilloscope (CRO) | Check transistor |