This telecommunications circuit was found in a National Semiconductor publication from the 90s. It is intended to convert the voltage from 48 V of telephone lines to 5 V with currents up to 1 A.
The circuit presented may use any general purpose transistor. The indicator is an LED and...
This circuit found in Electronics Handbook, Volume XIII 1993 shows a simple configuration of a...
This circuit was obtained in a 1982 English magazine. The purpose of this circuit is to make an...