Triangular generator (CB21445E)

Found in old documentation about neon lamps, this circuit produces very low frequency signals that depend on the selected capacitor.

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600-ohm amplifier (CB23536E)
This 600-ohm output impedance circuit was found in a Radio Electronics from October 1963. The...
Remote control expander (CB8396E)
Used with infrared remotes at the time, this circuit was found in a 1991 RE Experimenter Handbook....
Continuous 1.5 V Indicator LM3909 (CB14280E)
The circuit presented was obtained in a technical documentation from National Instruments. The...