1Φ HALF / SEMI / FULL CONTROLLED BRIDGE CONVERTER BASED WITH SPEED CONTROL OF 1/8HP PMDC MOTOR MODEL 8516-2

SALIENT FEATURES

• Completely self contained stand alone unit
• Ramp Comparator based firing scheme with isolation
• Soft Start circuit to avoid heavy inrush of

current

• Armature overload protection.
• Power circuit using Power Module for

SCR’s and Power Diodes with Snubber

circuit for dv/dt protection.

1/8HP PMDC motor

TECHSPECIFICATIONS

• Firing Circuit –                Ramp Comparator firing scheme using Op-amps and gates.

• Power Circuit –                i.         1Φ Half / Semi /Full Controlled Bridge using 4 SCR’s.  & 2 Diodes   ii.   1Φ Full Controlled Bridge using 4 SCR’s.

• Protection                  –         i.                Fuse protection

ii.  Armature Overload Protection

• Controls – i. 1Φ Mains ON / OFF Switch  ii.  Speed Control Potentiometer

iii. FWD / REV Switch

• Meters – i. Digital Voltmeter for Armature Voltage  ii.  Digital Current meter for Armature Current

iii.  Digital RPM Meter for speed of motor

• Indicators – i. 1Φ Indicators  ii.  Armature Overload

• Connectors – i. Armature to connect 1/8 PM DC Motor  ii.  Proximity Sensor

• Motor – 1/8 PM DC Motor

EXPERIMENTS

 To study the operation of a firing circuit of a 1 phase Half / Semi / Full controlled rectifier.

• To study the operation ofa 1 phase Half / Semi / Full controlled rectifier with motor.

SPECIFICATIONS ARE SUBJECT TO CHANGE DUE TO CONSTANT

DEVELOPMENTS WITHOUT ANY PRIOR NOTICE