58 - Small Signal Analysis (AC Calculations)

Nick M0NTV walks through the process of performing basic Small Signal Analysis on a simple transistor amplifier. This enables the calculation of useful AC characteristics - input and output impedance plus voltage gain.

This is Part 2 of our mini-series on designing a simple transistor amplifier. If you missed part 1 (which tackled the DC biasing) it is here:

https://youtu.be/Lr7MZQ6GIng

*** PLEASE NOTE: Apologies that my polarised electrolytic output capacitor is round the wrong way. Thank you to the two eagle-eyed viewers who spotted this. The anode (positive) end should be connected to the collector and the cathode (negative) end to the load. This is because the anode should be more positively biased than the cathode. Damage can occur to the cap (like spontaneous self-disassembly!) if this is ignored. I've obviously been lucky so far but I'm going to swap it round.

Hope you find some helpful content here.