Thyristor Time Delay Relay

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Thyristor Time Delay Relay

Power Electronic Training Board has been designed specifically to study the operation of SCR and TRIAC triggered by electronic time delay circuit. This facilitates to perform the experiment to students both the modes of operation-delayed turn on and auto turn off to control any type of load i.e. A.C. or D.C. Practical experience on this board carries great educative value for Science and Engineering Students.

Object:

Study of delayed Turn-ON of D.C. load
Study of auto Turn-OFF of D.C. load
Study of delayed Turn-ON of TRIAC as line switch
Study of auto Turn-OFF of TRIAC as line switch

Features:
The board consists of the following built in parts:

12V D.C. at 2 Amp, Power Supply internally connected
UJT 2N 2646 used as timer
Potentiometer for ramp control to adjust time delay
Set of 3 Capacitors for time delay control
Two SCRs connected in parallel coupled mode
Commutation capacitor.
Push button switch for starting
TRIAC for A.C. line switch
Lamp holder with 15 watt 230V lamp for A.C. load
Adequate no. of other Electronic Components
The unit is operative on 230V ±10% at 50Hz A.C. Mains
Adequate no. of patch cords stackable 4 mm spring loaded plug length ½ metre
Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections/observation of waveforms
Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References.
Weight : 3 Kg. (Approx.)
Dimension : W 340 x H 110 x D 210
Other Apparatus Required
Digital Stop Clock

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