Phase indicator (CB8295E)

Found in 1980s documentation, this circuit indicates the phase of a three-phase signal from the power grid. The neon lamp is common.

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Thermometer for 5V operation with (CB8711E)
Found in a 90s 303 Circuits, this circuit uses the KTY10 sensor, widely used at the time. | Clique na...
Phase Shift Oscillator (CB4373E)
This circuit was found in an English magazine from 1973. The magazine no longer exists, but the...
100 MHz Oscillator (CB12823E)
We found this circuit in an old Argentine publication from the 1970s. The transistor can be the...