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Transformer test

mauro  castro
hace 5 años
hace 5 años
Good. Friends I would like to know. What kind of didactic test can be done to a transfoemador being removed from the plate The transformer reaches the current but does not come out. Aca them under the transformasdor photos IMG_20200118_215810.jpg [737.20kb] . IMG_20200118_215747.jpg [752.69kb]
sergiouasd
sergiouasd
3.527
hace 5 años

Greetings, it looks like a ferrite transformer which works with a PWM signal that generates the electronic circuit where it is mounted, if that signal is not produced, it will have a DC voltage possibly that is what feeds the amplifier transistors or signal of the PWM signal, but it has no induction and there is no voltage from the secondary side.

Responder
seekude
seekude
2.085
hace 5 años
hace 5 años
You can measure if the coil is not open at most, but that is a high frequency switching of switched source, very rare to fail, if you do not have tensions in the secondary surely the oscillator circuit is failing, that is this drink does not go directly to the grid voltage as a conventional one.
Javier Chavez C
hace 5 años
hace 5 años
With the diagram where this transformer used as a reference works, you can only measure impedance (Ohm) and that some of its fields are not open. Attentive to the information provided especially by the colleague Seekude. The tests at work is like that of any chopper transformer: Check the oscillation circuit in the primary stage, And that there is no short circuit in the rectifier circuit or source load, in the secondary stage.
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