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Protective diodes for relays

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Protective diodes for relays
S1L Offline
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#1
05-20-2025, 09:52 AM
Hello. In the KC868-A2 circuit, the protective diodes D9, D11 are connected in parallel to the transistors, not the relay coils. Is this an error or a feature of the circuit?


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admin Offline
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#2
05-20-2025, 11:09 PM
yes, this is a bug of KC868-A2 v2.4 PCB. KC868-A2 v2.5 and KC868-A2v3 PCB have fixed this bug.
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