The purpose of this circuit based on Maxim's MAX9022 is to find faults in multiple cables. The circuit provides an audible signal on a buzzer being powered by 3 small or AAA batteries.
Found in a 90s Popular Electronics, this circuit is interspersed between the filter and the...
This circuit is from an 80's documentation. The integrated circuit is from the time and the...
This circuit was found in a 80s American documentation. The zener diodes determine the points of...