Found in a 1980’s documentation, this circuit must have its signal applied to an amplifier stage. The unijunction transistors can be 2N2646.
This circuit keeps the neon lamp on for a moment when it receives a pulse. The turn on time...
This circuit was obtained from an English magazine from 1976. What this circuit does is start from...
We found this amplifier in a publication of 1990, but it can be mounted today with some exchanged...