Here is a two-transistor Wien bridge oscillator using an ordinary night-light bulb for stabilization. The output is about 6 volts p-p and can drive fixed loads as low as 2 or 3 thousand ohms without additional buffering. A 10 k amplitude potentiometer with the wiper going to a high input impedance […]
Here is a phase-shift audio oscillator with excellent distortion characteristics thanks to “softened” diode limiting provided by the 1N914 and resistor divider and degenerated gain provided by the 68 ohm emitter resistor. For minimum distortion, increase the 68 ohm resistor to a point just below where oscillation stops. A simple buffer […]
CANCK108 - FM Transmitter w/ Line & Mic Input […]
1.5 Volt Tracking Transmitter: 10W HF Linear Amplifier: 2 Transistor FM Transmitters: 2 Valve 40m CW Transmitter: 222 MHz Transverter: 2N2222 40 Meter CW / DSB Tranceiver:
[…]
Stumble It!