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Current limit for traces on perma-proto board?
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Current limit for traces on perma-proto board?

by WeavingGeek on Wed Jul 08, 2020 9:34 am

I'm working on a project that involves using an Arduino to actuate solenoids. The solenoids I'm using are Adafruit's "Medium Push-Pull Solenoid" (https://www.adafruit.com/product/3992) that draw 1A @ 6V. I could use the +5V output from a digital pin to trigger a mechanical relay to supply power to the solenoid. (Pro: Can handle much higher volt/amp if I use a different solenoid; Con: Not very elegant, loud, expensive and introduces a mechanical failure point into the design.) I can also use the +5V output to trigger a MOSFET and supply power to the solenoid. Can I do this on a "Perma-Proto Breadboard PCB" board (https://www.adafruit.com/product/1609)? Can the traces on a board handle 1A? What about the power rail if I have one board using the output of a shift register to selectively trigger multiple solenoids with corresponding higher amperage on the power rail? Thanks in advance for any reply.

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Re: Current limit for traces on perma-proto board?

by adafruit_support_bill on Wed Jul 08, 2020 10:56 am

The PermaProto should not have a problem with 1A. But if you will have more than 2 or 3, you should consider beefing up the power rails.

You can do that by running one or more wires in parallel with the rail. Or you can strip a length of wire and solder it directly along the length of the rail.

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Please be positive and constructive with your questions and comments.