This high voltage oscillator with a neon lamp was found in a 1969 documentation. The circuit is synchronized by pulses of 1 kHz. The power voltage is 160 V.
This phase-shift oscillator with a transistor generates sinusoidal signals in the audio range. The...
This is the battery-powered version of the previous circuit. The circuit is from the same Radio...
Found in American documentation, this circuit for modulated infrared signals can be tuned to a...