This circuit can work with almost any JFET. The circuit is from an Electronics Now from April 1993. It is powered by a 12 V battery, but can also be powered by 9 V.
This 8-channel converter was found in a 1970s American documentation. The integrated circuits used are...
This circuit was found in an old publication and operates in the 455 kHz IF band since the...
This circuit implements a 3-way control, with outputs in A, B and C, using CMOS integrated...