How to a transformer with a multimeter? How to determine a transformer? To do this, set the multimeter to the continuity mode, and brute force to ring all the conclusions. Thus it is possible to determine the individual windings. Next you need to measure the resistance of each of them. Estimated primary winding is the one which will be the highest resistance. But do not just include it in the socket 220, because it can be designed for lower voltage, such as 110 V or 127 V. To check this, you need to connect the lamp nakalyvaniya consistently estimated the primary winding. If the lamp lights up, the winding is designed for at least 220 and in the future it is possible to connect to the network without a lamp. If the lamp lights up, it means that the winding of the transformer is not designed for the mains voltage and can not be connected to the network 220 V. Moreover, when it is lit in polnakala, the winding is designed for about 110 ... 127 V. If full intensity, the rated voltage of the winding is very low - to tens of volts.
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