Asmi Electricals

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Dimmer is trademark of ASMI electricals for their continuously Voltage Auto Transformer. It is a major improvement over tapped auto-transformers. It is a means to vary transformation ratio, in many small steps but without breaking the load circuit. It provides total satisfaction both electrically and mechanically. It is has a built in improved carbon brush mechanism. It has a perfectly would toroidal winding over a core of 41 grade C. R. G. O. silicon steel sheet. Carbon brush rotates over the silver track, formed by the coating of silver over a copper wire. Hence it ensures longer life and eliminates the problem of wear and tear. In industry and research institutes dimmer is quite useful because by just rotating a knob any voltage from q-270 volts is available at their output terminals. The beak less and step less variation of the voltage enables to control the power input and related parameters. Hence it forms the most versatile instrument used for developing the potential of all industries and research institutes. It is made by staging three auto transformers which are connected by a common shaft that drivers the three brush simultaneously. The three phase voltage continuously variable from zero to four seventy volts is obtained.