In order to do the required measurements for the lab several practical preparations is required. Ideally we should do measurements on real microelectronic circuits, but both cost and practical considerations prevents us from this. We will therefore use a component with a number of MOS transistors. These transistors is to be used together with other required components.
The labs are expected to be carried out as follows:
- The required components are identified (available in the lab).
- A suitable piece of soldering board (VERO) should be used.
- Components are soldered on the PCB and wired up with wires.
Carefully break required onboard connections with a suitable tool.- Pins for connecting instruments should be soldered on the board.
- Carefully inspect the wiring for shorts, especially between the power leads.
- Carefully power up the circuit by gradually increasing the applied voltage and monitor the drained current.
- If OK, set your pot-meter controlled biasing voltages with a meter connected.
- Prepare measurement script in MATLAB.
- Run your script without circuit connected (like make sure you are sweeping the correct voltage interval).
- Turn off you power and hook up instruments.
- Turn on power and proceed with measurements.
Always be carefull with excessive voltages and currents.