This circuit using only transistors was obtained from Ferranti's 1969 documentation. It can be made from modern transistors. The circuit is 4 bits.
This amplifier for effects on musical instruments can be mounted with BC549 transistors. The...
This circuit was found in documentation from the 1980s. The circuit uses several components of the...
The presented circuit can use an equivalent transistor like the BC548. The configuration, which [is...