This simple general-purpose transistor mixer was taken from an article in Electronics Now magazine in March 1994. You can choose a low-noise transistor such as the BC549.
Found in a 1980s telecommunications documentation, the circuit presented acts as a product...
This circuit was found in the Electronics Experimenter Handbook from 1991. The circuit controls a simple...
The time obtained in this circuit, from a 1978 publication, depends on R3 and C. R3 can have...