This transistorized stage has a high gain, being adjusted by VR1. The circuit can be used as an excellent audio preamp. We found this circuit in a 1996 English publication.
This circuit is more sensitive than the previous one (CB4118E) for using a full wave detector. The...
This circuit was obtained in an American publication of 1970, making use of components of the...
We found this circuit in a 90s Linear Technology documentation. The circuit uses components from...