Telephone line monitor

This circuit generates the sound of the electronic ringer found in modern telephones, replacing the two-bell electromechanical ringers used previously. The ringing pattern adheres to the United States standard of 2 seconds on and 4 seconds off. During the...

This non-isolated, unregulated converter with minimal components serves as a bridge between low-power zener regulation and the higher power applications of a 60-Hz input transformer. It is designed for scenarios where a non-isolated power supply can be utilized safely....

This circuit generates outputs on TV lines 24 and 257. It was utilized for a decoder circuit and employs a CMOS counter along with gate logic. Only one pin is designated for the output line indicator. The circuit described serves...

This analog switch circuit is designed to switch an analog line on or off. It consists of two analog switches in integrated circuit (IC) form that are controlled by two pushbuttons. The described analog switch circuit utilizes two integrated analog...

The article explains how to layout a standard MAX16922 automotive PMIC (power-management IC) to maximize performance and minimize emissions. The MAX16922 is a versatile power management integrated circuit designed specifically for automotive applications. Its layout is crucial for optimizing performance...

This circuit is designed for an LM1893 power line modem, which facilitates information transfer between remote locations using the power mains. The LM1893 serves as a power line interface for half-duplex (bi-directional) communication of serial bit streams employing various...