…with a Colpitts oscillator setup. – See the schematics in the images.
Version 8.1 adds:
* Optional Vcc+ supply filter using resistor, ferrite bead or inductor
* Collector resistor split for gain boost experiments
* Additional feedback network for common collector stages
* Extra ground point for cleaner external feedback wiring
Everything worked as expected.
But, I got ideas for the next version. A few additions will come during summer for v8.2.
Educational Value -> Useful for learning and exploring:
* Transistor biasing
* Voltage gain
* Emitter degeneration
* Phase inversion
* AC coupling
* Bypass capacitors
* Supply filtering
* Oscillator design
* Feedback techniques
* Impedance matching concepts
* Analog debugging techniques
More information here:
Circuit Library & Teaching Ideas
https://ufelectronics.eu/circuit-library-teaching-ideas/
Educational Sponsorship Program
https://ufelectronics.eu/educational-sponsorship-program/
Link to documentation (v8.1)
https://ufelectronics.eu/wp-content/uploads/sites/2/2026/06/Layout-of-the-Common-Emit-Coll-Amp-PCB-v8.1-Rev-1.pdf
Assembly Sheets
PDF – ODS (LibreOffice) – Excel (Microsoft)
Product page (v8.1)
https://ufelectronics.eu/product/common-emitter-collector-amplifier-board-v8-1/
