Hi,
I am trying to revive an equipment used for apnea monitoring. It uses 2 AA batteries, but doesn't work.
I opened it up and one inductor had a crack and makes a buzzing noise. It appears to be part of the power supply circuit.
The marking on the inductor is 4R7 1U.
See image, the tape is just to keep the broken corner attached.
When I search for it, a whole family of inductor appears. I don't know which one is correct.
Thanks,
RG
I am trying to revive an equipment used for apnea monitoring. It uses 2 AA batteries, but doesn't work.
I opened it up and one inductor had a crack and makes a buzzing noise. It appears to be part of the power supply circuit.
The marking on the inductor is 4R7 1U.
See image, the tape is just to keep the broken corner attached.
When I search for it, a whole family of inductor appears. I don't know which one is correct.
Thanks,
RG
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