Starfighter, 1 year ago It is my understanding that the ULN2003A (U4 and U5) has integrated flyback diodes. From the datasheet: Each consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. Good call on that ground plane. I’ll scoot the relays a little bit to the right. That should resolve the issue. Thanks for your feedback! :)
It is my understanding that the ULN2003A (U4 and U5) has integrated flyback diodes. From the datasheet:
U4
U5
Each consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads.
Good call on that ground plane. I’ll scoot the relays a little bit to the right. That should resolve the issue.
Thanks for your feedback! :)