Electronics, electrical engineering

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A device to measure very small currents in nanoamperes (nA), picoampere (pA) and, in some cases, femtoamperes (fA).

A device that uses the piezoelectric effect to measure pressure, acceleration, strain or force by converting them to an electrical charge.

RC and RL Lowpass Highpass Filters
The simplest RC RL chains are first-order filters; they contain active resistances and one reactive element: capacitance or inductance, connected in series or parallel.

The wall socket voltage is actually 120 V and "formally" the peak-to-peak voltage is 339.36 V. However in reality, there are no such values ​in a wall outlet.

A switch used in electric circuit that redirects the path of electric current depending on the current inputs to the switch.

Resistor
A resistor is an electrical component that implements electrical resistance.

Rogowski coil
A Rogowski coil, named after Walter Rogowski, is an electrical device for measuring alternating current (AC) or high speed current pulses. It consists of a helical coil of wire with the lead from one end returning through the centre of the coil to the other end, so that both terminals are at the same end of the coil.

Series/parallel Equivalent Mode
For the presence of non-ideality and distributed parameters of components, actual components are usually equivalent to combined network of ideal components. In general, there are two simple equivalent models used in LCR meters, which are series model and parallel model.

Sinusoidal Voltage and Current Parameters
Alternating voltages and currents can be characterized by various indicators.

Thermistor
Thermistor (thermoresistor) is a semiconductor resistor, which electrical resistance considerably depends on temperature. It is used for registration, temperature measurement in thermal control systems, in power meters and other devices.


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