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Dialtone
The circuit diagram for kit 74v2 does have shunt diodes, those integral to the ULN2803 are being used in this application, they all have a common connection for their cathodes, pin 10, connected to the relays' +12v supply rail.
Asjad
I would be interested to see a circuit driving inductive loads and ignoring the internal diodes in favour of external diodes, it just seems wasteful !
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