Browse Prior Art Database

Delay Line Applications

IP.com Disclosure Number: IPCOM000097156D
Original Publication Date: 1962-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 20K

Publishing Venue

IBM

Related People

Rogers, JC: AUTHOR [+2]

Abstract

The circuit includes a delay line 1 which h as both its input and output grossly mismatched. The circuit is employed to increase the effective length of the line or to generate several timing pulses from one input pulse. are coupled through leads 5 and 6, respectively, to OR 2. OR 2 drives amplitude detector 3. If the output of delay line 1 is terminated in an effective open circuit, the pulses are unipolar. If terminated by an effective short circuit, the pulses are bipolar.

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Delay Line Applications

The circuit includes a delay line 1 which h as both its input and output grossly mismatched. The circuit is employed to increase the effective length of the line or to generate several timing pulses from one input pulse. are coupled through leads 5 and 6, respectively, to OR 2. OR 2 drives amplitude detector 3. If the output of delay line 1 is terminated in an effective open circuit, the pulses are unipolar. If terminated by an effective short circuit, the pulses are bipolar.

Due to mismatching, a single input pulse travels down line 1 and is reflected back toward the input, etc. That is, the pulses are bounced back and forth in delay line 1. As a result, a train of pulses, each of a lower amplitude than the preceding one and displaced by the delay of the line, appears at detector 3. If detector 3 is arranged to detect pulses within a certain voltage range, the effective length of 1 is adjusted by changing the minimum and maximum detection levels.

If a train of output pulses is desired, detector 3 is arranged to detect only pulses above a certain minimum voltage. The number of pulses in the train is then determined by controlling the detection level.

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