This alarm siren was found in volume 5 of the 1995 Encyclopedia of Electronic Circuits. The circuit powers a buzzer.
Texas Instruments LMV3xxA operational amplifiers are low voltage types (2.5 to 5.5 V). In the...
This amplifier step with a transistor has an input impedance of 100k to 10 M. The transistor can be any...
This circuit is from 1993 documentation. The table shows the component values for voltage...