Accession Number : AD0695503

Title :   BIASING CIRCUITRY FOR TUNNEL JUNCTIONS,

Corporate Author : ROCHESTER UNIV N Y DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Longacre,Andrew , Jr

Report Date : OCT 1969

Pagination or Media Count : 9

Abstract : A method of generating bias has been developed which greatly facilitates studying the voltage-current characteristics of tunnel junctions. A triangle wave to sweep the bias, a dc level for offset, and a small amplitude sine wave used for taking derivatives are all summed in a dc amplifier. The junction is biased by the attenuated output of this amplifier with either a high or low impedance loadline. The two transistor circuits which largely comprise this bias supply are compact and battery-powered, minimizing grounding problems. (Author)

Descriptors :   (*SUPERCONDUCTORS, TUNNELING(ELECTRONICS)), (*TUNNELING(ELECTRONICS), ELECTRICAL NETWORKS), AMPLIFIERS, TRANSISTORS, CRYOGENICS, INTERFACES

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE