Colpitts Oscillator, MiniPCB, 06A-05, Rev A1-03

I made a Colpitts Oscillator (06A-05) that oscillates at 121 kHz.

The circuit design is highly similar to the most well-known Colpitts circuit, and the layout is optimized for medium sized electronic components. So there's a lot of part value, or component comparison, experimentation that can happen with this board.

The PCB is a two layer board, and designed to be easy to manufacture and assemble. And it is optimized for cost by being panelized on 100 x 100 mm squares.

Signals are routed on the bottom layer (the layer with the part number), and a common ground plane (as uncut as possible) is on the top layer.

The P1 connector is located in a standard position with respect to the board edges: making it possible to build a universal tester, backplane, or stand.

For ease, start with the shortest components.

If a potentiometer is installed with pin 1 in the wrong place, the adjustment procedure will be inverted (CW/CCW).

For ease of changing between five-pin boards, use Interface Board, 00A-12.