This 10 kHz filter was obtained from an article in Electronics Now magazine in February 1995. The power supply is dual and other equivalent operating conditions can be used.
Similar to other circuits found in this section, this circuit is from a 1996 Electronics World;...
This circuit is an improvement of the previous one, with the use of two transistors produces a...
This small receiver for the medium wave range was found in a Japanese documentation from 1961. The...