pdf for speed control of universal motor using scr
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Threads: 4
Joined: Mar 2015
ABSTRACT
In an SCR circuit controlled universal motor, means is provided for smooth speed control at all speed settings especially low settings which comprises a series wound stator field as part of the motor and at least one closed conductor loop of wire encircling the stator magnetic flux path.
Features
Built in AC & DC Power Supply
On board firing circuits
Firing angle control: 0 to 180 degree
Speed measurement: RPM counter circuit with LCD display
Selection of open/close loop control
SCR circuit : Bridge rectifier and anti-parallel
connected SCR
Isolation between SCR power circuit and firing circuit
Test point to observe output of different blocks
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