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.
I found this circuit in an article in a 2003 publication. The circuit is an example of how to...
This 9 V amplifier has a gain of 20 and provides a power of a few hundred milliwatts. The circuit is...
Found in an old Elektor, this circuit uses two 7-segment displays to indicate the volume of an...