Found in a 1964 Electronic Design this circuit makes use of components of the era. The output is 2 V peak to peak and the input is 2 V. The maximum frequency depends on the employed components.
This decorative object was found in a Signetics documentation from the 60s. The circuit uses neon...
This circuit of old American documentation (1965) can be applied to any transistor. | Clique na...
The LEDs act as diodes, so if good they will show the same characteristic curve. Arrangment shown...