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.

Transistorized multimeter (CB7355E)
This circuit is from a 1967 Triplett manual. The circuit uses components of the time, the common...
Telesimulator (CB4294E)
The basic idea of this 1989 circuit is to trigger a relay for a while when a call signal occurs on...
LM3900 Inverter Amplifier (CB4028E)
This setting is valid for other transconductance operational amplifiers. The circuit is from...