This simple audio generator with the 741 was found in a 90sTexas Instruments. The circuit generates sinusoidal signals from 15 Hz to 150 kHz in 4 bands, as shown in the diagram.
This circuit of a few tens of milliwatts of power requires a single source. We found it in a Radio...
Found in Popular Electronics this circuit will trigger a buzzer if the ignition key is removed...
May 2017 - The new 36V TLVx171 Series of General Purpose Operational Amplifiers from Texas...