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Author Topic: Help identifying part  (Read 487 times)

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Offline Helix70Topic starter

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Help identifying part
« on: October 23, 2023, 06:19:04 am »
Anyone know what CP3 is? It is part of an optoisolator digital input circuit.

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Online ataradov

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Re: Help identifying part
« Reply #1 on: October 23, 2023, 06:30:19 am »
Capacitor array.

It looks like it is setup as two series capacitors. I'm not sure this even saves the board area. It is possible that they were just trying to reduce BOM item count.

Although connection to D9 is strange, so may be they are using it as 3 series capacitors.
« Last Edit: October 23, 2023, 06:35:29 am by ataradov »
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Offline Helix70Topic starter

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Re: Help identifying part
« Reply #2 on: October 24, 2023, 01:16:16 am »
Ahh, thanks, that makes sense.

The diodes are fast switching double diodes and are configured as a full wave bridge rectifier. The capacitor array is wired so there is a capacitor across each diode, I guess to limit EMC.
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