CrayonXA (My First 9XA)
Learning transistors, power supplies, 555 timers, Schmidt Triggers, AND gates, darlington transistors and optocouplers all in one shot. It still amazes me this ever worked :)
The circuit for this design originated from Max Miller's 9XA (drawn in crayon)
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A funny video illustrating how I still had much to learn about building circuits :)
More progress on the 9XA. Learning how proper transistor biasing and loading is important for controlling amplitude modulation.