This trainer is intended to study the different type of triggering circuits for the SCR applications. The types of trigger are Synchronized firing angle that can be controlled from 0 to 1800, Phase shift triggering in the range of 0 to 1800 and UJT Triggering. In order to provide necessary gate signals to the thyristor, a built-in power transformer with buffer circuit is provided. For the purpose of experimentation, necessary components like resistors, potentiometers, diodes, capacitors are available onboard. The circuits are to be inter-connected using patch cords to study the experiments. This trainer has necessary power supplies, 12V AC transformer for waveform comparison on one channel of oscilloscope. An external dual beam oscilloscope is required to observe the control signals. Specifications:
Uni-Junction Transistor ? 1 No
Thyristor : 1 No
The Thyristor used works on CLIP ASSEMBLY technology with
a) An average ON-State current of 10A @ 180? conduction angle.
b) Critical rate of rise of on-state current 50 A/ ?sec.
c) Peak gate current with 4A.
d) Average gate power dissipation 1 Watt.
e) Maximum peak reverse gate voltage 5 V.
f) Threshold voltage 0.77V.
g) Average gate power dissipation 1Watt
h) Pulse transformer with two outputs
i) Potentiometer: Two numbers of suitable potentiometers
j) Buffer transistor: 1 No
k) 12 AC transformer for waveform comparison.
l) All assembled in an elegant FRP cabinet. |
