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Level Detector

Level Detector: Schmitt trigger or level detector circuits are very often employed in static relay circuits as a final stage before the trip coil circuit of the circuit breaker. The…

Resistance Temperature Detector (RTD)

Resistance Temperature Detector (RTD): Resistance Temperature Detector (RTD) commonly use platinum, nickel or any resistance wire whose resistance varies with temperature and which has a high intrinsic accuracy. They are…

Detectors Types

Detectors Types: The Detectors Types are as follows For low frequency, the most convenient detector is the vibration galvanometer. For ordinary laboratory work at frequencies up to a few 100 Hz,…

What is Phase Sensitive Detector or Phase Meter Circuit?

What is Phase Sensitive Detector or Phase Meter Circuit?: Figure 10.4 shows a Phase Sensitive Detector or Phase Meter Circuit for comparing an ac, signal with a reference signal. The…

Oscilloscope as a Bridge Null Detector

Oscilloscope as a Bridge Null Detector: As a null detector for an ac bridge, the oscilloscope, unlike a meter used for the purpose, gives separate indications for reactive and resistive…

PLL FM Detector or Demodulator

PLL FM Detector or Demodulator: The PLL can be very easily used as an FM detector or demodulator. Fig. 2.131 shows the PLL FM Detector or Demodulator Block Diagram. When…

Power Semiconductor Devices Articles

Power Semiconductor Devices Articles: What is Thyristor? – Thyristor Family and its Applications: Thyristor is the general name given to a family of semiconductor devices having four layers with a…

Optoelectronics Articles

Optoelectronics Articles: What is Photoelectric Effect? When monochromatic light is incident on a clean surface of a material, then under certain conditions, electrons, also called photoelectrons, are emitted from the…