This decorative object was found in a Signetics documentation from the 60s. The circuit uses neon lamps and must be powered by a high continuous voltage. The current is extremely low.
The traditional circuit was taken from a French magazine Radio Plans that no longer exists but can...
This circuit with operational amplifier was found in old American documentation. It can be...
When two pulses reach the inputs of the circuit simultaneously, the PUTs fire triggering the lamp...