Summary
Brief description: Apparatus that vary the speed of three phase electromotor from zero to maximum by triac (even high power) and electromotor will spin softly.
Listing Information
Posted by Ahmad Kafaee Razavi under Electronics & Gadgets
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Full Description
The problem to be solved:
DC electromotors are expensive ,and repairing is hard ,so three phase electromotors are preferred. But if we want "variable speed" (varying frequency and voltage) it is hard and expensive, and needs great and complex electronic circuit for varying the speed of three phase electromotor.
It is an apparatus that vary the speed of three phase electromotors from zero to maximum by triac (even high power) and electromotor will spin softly; and it is a box about (30×40×50 Cm)and it has six terminals ,3 terminals to electricity voltage (three phase ,380 V) and 3 terminals to three phase electromotor. By turning a volume we can increase or decrease the speed of speen.
It contains simple and very cheap electronic circuit and Rrepairing is very easy and fast.
