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.
We found this circuit in an old neon lamp application manual. The circuit stores a call. The...
Poptronics recommends this circuit for use in the car when the headlights are left on. The circuit...
We found this circuit in a 1981 publication, when it was still possible to find 22.5 V batteries (used...