For those who often repair burnt-out engines of angle grinders, drills, screwdrivers, planes, jigsaws and other tools, an anchor tester will be very useful. This is a simple device to manufacture, which is made from a transformer. With it you can identify burnt out rotors quickly and clearly.
What you will need:
- transformer OSO 0.25/1-UZ;
- insulating tape;
- double circuit breaker;
- the wire;
- fork.
Device manufacturing process
On the transformer core it is necessary to cut a wedge to the coil.
It is made so wide that an anchor can be placed in it. To do this, the transformer is clamped in a vice. To avoid damaging the winding, it is better to wrap it with a couple of layers of cardboard.
Then the winding is wrapped with electrical tape. Next, a wire with a plug and a switch is screwed to the transformer.
If you apply a working armature to the cut of a transformer connected to the network, it will not magnetize. To check it, you should turn it completely and examine the magnetism over the entire surface.
When the rotor is short-circuited, when turning, there will be magnetic areas on it that attract metal objects. In this case, the reason for engine failure is in the armature.
Also read the article on how you can check the engine rotor using multimeter - https://enn.washerhouse.com/5260-polnaja-proverka-rotora-jelektrodvigatelja.html
