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.
This circuit converts a positive voltage to negative, with maximum output current of the order of...
This one-digit photometer using CMOS circuits was found in a 1989 documentation. The circuit is...
The frequency of this circuit is approximately 1 Hz. Whenever the output is at low level, the LED...