The circuit shown in the figure can be designed with more modern operational amplifiers, as it is from 1994 documentation by National Semiconductor. The power supply must be symmetrical.
This somewhat unusual configuration, mainly in the form of adjustment, is from a 1978 publication. The...
This circuit was found on an 80's Ham Radio. The transistor admits equivalent. The circuit can...
The purpose of this circuit is to modify the sound of organs so that they resemble the sound of a...