The diac is a two-terminal device having a combination of parallel-inverse semiconductor layers, which allows the device to be triggered through both directions regardless of the supply polarity. … [Read more...] about Diac – Working and Application Circuits
Unijunction Transistor (UJT) – Comprehensive Tutorial
A unijunction transistor is a 3 terminal semiconductor device which is unlike a BJT has only a single pn junction. It is basically designed to be used as a single-stage oscillator circuit for … [Read more...] about Unijunction Transistor (UJT) – Comprehensive Tutorial
Solid State Relay (SSR) Circuit using MOSFETs
SSR or Solid state relays are high power electrical switches that work without involving mechanical contacts, instead they use solid state semiconductors like MOSFETs for switching an electrical … [Read more...] about Solid State Relay (SSR) Circuit using MOSFETs
Calculating Transistor as a Switch
Although transistors (BJTs) are popularly used for making amplifier circuits, these can be also effectively used for switching applications. A transistor switch is a circuit in which the collector … [Read more...] about Calculating Transistor as a Switch
Photodiode, Phototransistor – Working and Application Circuits
Photodiodes and phototransistors are semiconductor devices which have their p-n semiconductor junction exposed to light through a transparent cover, so that external light can react and force an … [Read more...] about Photodiode, Phototransistor – Working and Application Circuits
Optocouplers – Working, Characteristics, Interfacing, Application Circuits
OPTOCOUPLERS OR OPTOISOLATORS are devices that enable efficient transmission of DC signal and other data across two circuit stages, and also simultaneously maintain an excellent level of electrical … [Read more...] about Optocouplers – Working, Characteristics, Interfacing, Application Circuits