Browse Prior Art Database

Control Circuit

IP.com Disclosure Number: IPCOM000098440D
Original Publication Date: 1960-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Akmenkalns, IG: AUTHOR

Abstract

A transistor triode is used as a coupling element to switch a tunnel diode. This is advantageous because the switching of a two terminal device presents circuit complications such as power steering, large input time constants and increased input power requirements to offset any increase in source resistance.

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Control Circuit

A transistor triode is used as a coupling element to switch a tunnel diode. This is advantageous because the switching of a two terminal device presents circuit complications such as power steering, large input time constants and increased input power requirements to offset any increase in source resistance.

A transistor triode 10 having a grounded emitter configuration is connected in parallel with a tunnel diode 11. The composite unit output characteristic corresponds to the tunnel diode characteristic. By varying the base current to the transistor, the diode may be switched between the positive resistance regions.

Under control of the transistor base current, with the load line fixed, the composite unit effectively provide s infinitely many tunnel diode characteristic curves as shown in the left-hand drawing.

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