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PCB Forum Driving relays..is this acceptable?
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  • Replies 4 replies
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  • relay circuits
  • pcb design
Related

Driving relays..is this acceptable?

colporteur
colporteur over 2 years ago

image

Is this acceptable? Are there any downsides?

I am looking to drive three 12V relays. My plan is to replace the single relay in the MOSET circuit with the three relays.

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  • kmikemoo
    kmikemoo over 2 years ago +2
    colporteur I've always been of the belief that placing the anti-spike diodes as close to the inductive spiking coils as possible is desired to minimize what is "felt" by the rest of the circuit. Redundant…
  • dougw
    dougw over 2 years ago +2
    The circuit looks good. As the others mentioned, put a snubber diode on each relay. Ensure the gate voltage provided by the resistor divider is sufficient to saturate the FET at the current it needs to…
  • shabaz
    shabaz over 2 years ago +1
    Hi Sean, You can add as many relays (or any other load) as required, with the circuit as you've shown (or add extra diodes close to the relays as Mike mentions), if the total current consumption is supported…
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  • colporteur
    colporteur over 2 years ago

    Much appreciate the response folks. My electronics knowledge is dusty. Thanks for looking over my shoulder. There are snubber diodes across each relay. I got lazy at midnight to add them to the sketch.

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  • colporteur
    colporteur over 2 years ago

    Much appreciate the response folks. My electronics knowledge is dusty. Thanks for looking over my shoulder. There are snubber diodes across each relay. I got lazy at midnight to add them to the sketch.

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