This third-order filter was found in a 1975 publication. The circuit must be powered by a symmetrical source. The components can be changed for operation on other frequencies.
Found in the August 1994 issue of Electronics Now, this CMOS circuit uses the 4046, which is...
We found this circuit in an English publication from 1982. The power MOSFET can be of any type and the...
This tunnel diode oscillator was found in July 1986, Radio Electronics magazine. Note the low...