Plasma Lamp with Triac (CB26134E)

We found this circuit in a Radio Electronics Experimenter from 1990. The circuit uses a common incandescent bulb and a car ignition coil.

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Xenon Flasher (CB6941E)
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1 kHz High Pass Filter (CB12568E)
The circuit, shown in the figure, is suggested by Texas Instruments, making use of one. Frequency is...
800 Hz tone generator (CB18973E)
This circuit generates a continuous 800 Hz tone on a small speaker of 8 to 16 ohms. An amplifier stage...