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Browse Prior Art Database

Etching Esaki Diodes

IP.com Disclosure Number: IPCOM000097554D
Original Publication Date: 1961-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Davis, EM: AUTHOR

Abstract

The apparatus is for etching an Esaki diode 10 to secure a current voltage characteristic such as shown by curve D of the upper drawing in which the peak current has a value of 11.

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Etching Esaki Diodes

The apparatus is for etching an Esaki diode 10 to secure a current voltage characteristic such as shown by curve D of the upper drawing in which the peak current has a value of 11.

Battery 12 supplies current for electrolytically etching the diode 10 with a jet 14 of etching solution 15. A unidirectional current source 16 supplies a current equal to the value I3 to the diode 10 via conductors 18 and.20 and electrodes 22 and 24. Etching progressively reduces the peak current as represented by the curves A, B, C and D. When that point reaches the value 11, the operating point of the diode 10 shifts to the point 0 and a voltage E3 is developed across the diode.

This voltage is amplified by amplifier 26 and is employed to operate the relay 28 to open contacts 30 and 32. This shuts off the pump 34 and opens the etching circuit.

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