Pulse-triggered 7555 monostable (CB25128E)

We found this circuit in a Radio Electronics magazine from April 1988; The output timing is given by R1 and C1.

Digital control with relays (CB23773E)
With the coded activation of the relays, it is possible to control which of the 16 outputs...
Programmable Current Shield (CB19955E)
The integrated circuit used in this application is not very common. Transistors and resistors...
Mains Voltage Indicator (CB11532E)
This simple circuit makes use of neon lamps to indicate the voltage of a power grid. The lamps are...