Suggested by Philips in 1966 documentation, this limiter can be found elsewhere on this website. The circuit is for 7 V, but can be changed to other voltages, depending on the zener diodes.
The circuit shown, found in a 2004 documentation, allows the use of a telephone, without the...
We found this circuit in a 90s Popular Electronics. The circuit can be implemented with modern...
We found this circuit in Radio Electronics magazine from May 1967. The circuit has the tuned...