This audio mixer was found in an old American documentation. The potentiometers are 1M and the input capacitors are 100 nF. The circuit requires power supply voltages from12 to 18 V.
A circuit in which the light turns on smoothly and goes out quickly, but which can be adjusted more...
This circuit has been found in an old documentation and therefore uses a lamp as an indicator. In a...
This circuit was found in a Popular Electronics from the 90's. The transistors are general-purpose types...