Basic Components of Static Relays

Basic Components of Static Relays:

Field Effect Transistor in Static Relay : Field Effect Transistor in Static Relay is a unipolar device as compared to bipolar transistor already discussed. Basic Components of Static Relays …


Logic Circuit in Static Relay : The concept of Logic Circuit in Static Relay can be better understood by considering the logic operations performed by the devices rather than the actual happenings that occur during their operation. …


Sampling Circuits : Sampling Circuits is one which allows a comparison of instantaneous values derived at different instants of time, thereby dispensing with the need to phase shift and mix signals derived from the primary line quantities. Figure …


Semiconductor Diodes in Static Relays : Semiconductor Diodes in Static Relays – The pn junction has rectifying characteristics as shown in Fig. (10.1). If a source of emf is connected to the pn junction in the polarity …


Smoothing Circuits : The rectified a.c. consists of a series of undirectional half waves of current or voltage. It is generally desirable to smooth this output. The various filters used for Smoothing Circuits are the conventional RC …


Square Wave Generators : Diode clippers can be used to remove the curved portion of the sinusoidal wave to give square waves. The operational amplifier together with an integrator, can be used to generate a square wave. …


Summation Device : Summation transformers and sequence networks as already discussed can combine a number of electrical quantities into a single quantity. The operational amplifier is commonly used as a mixer or summer and the Summation Device …


Thyristor in Static Relay : The structure of Thyristor in Static Relay consists of four alternate p-and n-type layers. In the thyristor (also called a silicon controlled rectifier—SCR) connections are made available to the inner layers. It …


Transistor Use in Static Relay : Transistor Use in Static Relay – In its simplest form, it consists of two pn junction diodes coupled together by a very thin common base, either of p-type or n-type semiconductor …


Unijunction Transistor in Static Relay : Unijunction Transistor in Static Relay is a three terminal device with only one pn-junction. It is made up of n-type silicon wafer having two base controls and a p-type alloy junction …


Zero Crossing Detector Circuit : Zero Crossing Detector Circuit basically involves the sine to square wave conversion by a level detector circuit followed by a pulse circuit, which consists of one shot monostable circuit or a differentiator. …


Updated: April 29, 2020 — 8:51 pm