Found in Maxim's documentation from the 90's, this circuit uses an integrated from the time providing a 12 V output from 10 to 12 V inputs.
With the name of transitube we find this MW receiver in documentation from the 50's. It uses a...
This circuit can provide both positive and negative voltage outputs from 2 to 12 V with current up to...
In critical applications of the RS-232 interface, the danger of induced voltages in the cables must...