This simple circuit for headphones or small speakers was found in documentation from the 90s. The circuit works with voltages from 5 to 9 V and has good gain.
This circuit was found in documentation from the 80s. The circuit did not include resistors from...
This circuit used in instrumentation is suggested by National Semiconductor, now Texas Instruments and...
The source shown in the figure provides output voltages in the range of 1.2 to 25 V with currents up...