Found in Popular Electronics, this sophisticated short-wave receiver requires a lot of skill from an eventual assembler. The coils are commercial types of the time, used in commercial radios.
This amplifier uses common transistors in a phase inverter configuration. Transistors must be...
This circuit generates a linear ramp whose frequency depends on the capacitor and the setting. The...
We found this circuit in a Popular Electronics from the 90s. Transistors can be modern...