X3555, 555 on-delay starter

This e-product is a printed circuit board (PCB) in PDF format so you can build it yourself.

This circuit delays the time when the power-supply is turned on so that the input power-supply capacitors leave the short-circuit state and then it's safe to power your circuits. It's intended to work with 12VDC power-supplies.

You can find the companion blog entry here.

I used tracks of 40 and 50 mils, one layer and no jumpers so you don't have problems when building this circuit with home made tools and techniques, like toner transfer and iron or laminator.

This circuit is meant for recreational purposes, you must not use it in industrial or alike enviroments.

After your purchasing you'll get an email with instructions to download it (it may take several minutes). The PDF includes your email stamped on it.