The Small Solution to the BreadBoard Power Problem

We all use breadboards for prototyping. We all use DC Adapters to add power to them. But i used to do this by simply taping the wires to the DC Jack and then use it on the breadboard. This was always loose and clumsy and i always has to find out the polarity as some manufacturers are smart to not ground the outer shell. I even blew an IC this way once, when it was taken for granted. Some manufacturers do keep the outer part (shell) as positive while ‘most’ keep it negative!

Duh!

So, I found out a better way to make breadboards compatible with DC jacks and polarity issues. This is small board with headers that plug into the breadboard. It has a diode to make sure nothing flows reverse and a small 0.1uF cap to provide some rudimentary decoupling.

I quickly designed the board,etched it and filed it to shape.

Board design

Board design

Schematic

Schematic

Before the bath

Before the bath

On the breadboard

On the breadboard

And Tada! I have one little board that has ‘inherited’ two worries ! Two things of the “To-Worry-about” list šŸ˜€
This shall end the biggest #issues while using #breadboards #DCJacks and #PolarityCheers!