Elmo Instruments Industries

It means to vary the transformation ratio in very small steps but without breaking the load circuit. Its sepecfication is like:-

Input :- 240 Volts 50 Hz A.C

Output:- 0 to 270 Volts.

Being a true transformer, the maximum voltage available is made about 12% higher than the input voltage.

An auto transformer for 3 phase supply

A Large 3 -1/2 digit LCD display and low cost makes this meter ideal for begining electronics courses. Meter includes colts/ohms/resistance/current plus transistor and diode testing. The meter features overload protection and includes battery and test leads. Instruction included.

This transformers transfer the voltage from the primary winding to the secondary winding with the help of magnetic field. Supplied with 220 volts, 12 volts and 6 volts.