This circuit was obtained from an Analog Devices documentation from the 90's. The circuit is for a voltage of 1.23 V and is used in a voltage source greater than 3 V.
The figure shows how to add a Darlington stage to an operational amplifier in order to obtain a...
A pulse goes off this horn produces 800 Hz tone when fired. Powered by 5 V the circuit works as a...
This electronic siren circuit, found in a 1982 documentation, uses three oscillators mounted...