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I have an experiment with coils (I manage to this) You have to give a frequency to the coils (but not 50 Hz, it depends on the revolution) RPM/60 = frequency
But I dont know the RPM (How can I determine the revolution)
and I dont know how can I produce the frequency (with a signalgenerator, I think) (with ne555 IC)

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Hi Ante,
I think Source shows the motor's slip ring contacts that connected to the spinning head. I think he wants to mount a circuit on the other side and needs a way to connect the circuit's power supply to the slip rings.
Are the contacts for the slip rings in the small ribbon cable shown? ???

Looking at the discolouration on the motor's shaft, it ran out of lube in its bearing. :(
The slip rings look bad too. :( ;D

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