Browse Prior Art Database

Pulse Light Generator

IP.com Disclosure Number: IPCOM000095756D
Original Publication Date: 1964-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 22K

Publishing Venue

IBM

Related People

Anderson, JL: AUTHOR [+2]

Abstract

This circuit produces discrete light pulse outputs in response to a ramp voltage input.

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Pulse Light Generator

This circuit produces discrete light pulse outputs in response to a ramp voltage input.

A plurality of tunnel diodes 1 ... n is arranged in series with one terminal of a light producing generator, such as a gallium arsenide diode. At the opposite terminal of the Ga As diode, the ramp voltage is applied. Each succeeding tunnel diode in the series string has an increasingly greater peak current value than the preceding one.

In response to the ramp voltage input, the Ga As diode is caused to fire emitting light. When the current through this diode reaches the peak current of the tunnel diode having the lowest peak current, the tunnel diode switches. A decrease in voltage occurs, extinguishing the light generated by the Ga As diode. As the ramp voltage increases, the cycle repeats and light is again emitted until the tunnel diode with the next higher peak current value switches. This process continues until the last tunnel diode switches or the ramp voltage input is removed. just preceding the switching of a tunnel diode, a pulse of light is produced by the Ga As diode.

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