The operational amplifier for this tone control found in a 1977 Signetics manual may be the 741. The power supply must be symmetrical and the signal cables short. The bass gain is 20 dB.
This circuit was found in a 1993 publication. The L1 coil consists of 12 turns in a ferrite core...
January 2017 - Mouser Electronics is introducing new, ultra-thin Vishay Displays OLED modules. The new...
This high-power amplifier that comes close to 400 W peak uses unusual high-power transistors...