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During the last 5 years I have posted a couple of projects on Elektor Labs, which have 2 things in common: They use a member of the PIC12F microcontroller family There is no PCB, because a left over ...

Check out this interesting wideband AC millivoltmeter circuit from 1990. The simple design features 12 ranges, decent accuracy, 200 µV accuracy, and more.

A low-cost method of fabricating a printed circuit board (PCB) is presented. The process is favorable over conventional PCB fabrication due to fewer processing steps and lower capital investment. A ...