Thyristor DC Drives.... (Last update.... 6^th August 2013 )	6, 8, 25, 56, 45, 29
	Block diagram, general functions of each block, common faults etc...

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Block Diagram	Ramp Circuit	Speed Amplifier	Current Amplifier	Firing Circuit	Power Circuit
Types of DC drives	Checking Thyristor	Voltage feedback Vs Tacho feedback	Current Limit	Constant HP & constant Torque	Field Weakening
Using CRO	Motor runs at full speed	Fuses Blow	Hunting in speed	Motor gives jerks	Belts vibrate
Speed control not satisfactory	Speed drops on load	Motor overheats	Sparking on commutator	DC drives and Power Factor	Your comments and suggestions
Drive stops all of a sudden	Motor not able to drive the load	DC to DC isolation	Motor or Drive?	Home	About writer