On Selenium Voltage Variable Capacitor for Electronic Tuning

Abstract

Selenium diode with hyperabrupt profile to be used at variable voltage capacitor (VVC), is fabricated. The capacitance exponent of the order of one is achieved by suitable thermal treatment. Low frequency applications of such selenium VVC in L-C tuner and first and higher order active filter (Butterworth) are suggested. Experimental results are discussed.

Indexing terms:

• Selenium device
• VVC
• Filter