Breadboard Ground Plane

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chris319

Well-known member
Joined
Sep 4, 2006
Messages
110
Does anyone have experience adding a ground plane to those white plastic breadboards seen here?

http://en.wikipedia.org/wiki/Breadboard

I love using these things as they are easy to get a circuit going. However, I built a mic preamp on one and there is a very low level 60 Hz hum which I'd like to get rid of. I was thinking of taking a piece of copper foil and attaching it to the bottom of the breadboard and making a connection to ground. Anyone ever done this and can say that it does/does not work?

Here is where you can get copper foil cut to size. The price of the copper is reasonable; it's the shipping that kills you.

http://www.onlinemetals.com/merchant.cfm?id=129&step=2&top_cat=87

This preamp is powered by batteries, BTW, so it's not power supply hum.

Many thanks.
 
bolt yer board to any scrap of sheet stock--steel or whatever--better yet get a metal enclosure for the breadboard, an old recipe box? make sure you ground the case/metal
unetched copper pcb board from radioshed is not to bad to work with but i think an enclosure would really do you better.
60hz is usually from ground loops/magnetically induced. copper is not going to stand up to a strong 60hz field --you would move the circuit and find a quiet spot
 

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