Thyristor & Power Control Circuits Unit 4 – SCR AC Control
In this circuit, power to the load (R8) can be controlled on both halves of the input cycle.
Therefore, the maximum power to the load is twice that of the half-wave circuit.
NEW TERMS AND WORDS
conduction angle - the time an SCR conducts during one cycle of the source voltage measured in
degrees.
phase control - control of the SCR conduction angle through controlling the phase of the SCR
trigger signal with respect to the source voltage.
EQUIPMENT REQUIRED
F.A.C.E.T. base unit
Multimeter
Oscilloscope, dual trace
Generator, sine wave
THYRISTOR & POWER CONTROL CIRCUITS circuit board