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DIP-SWITCH TESTER

IP.com Disclosure Number: IPCOM000005457D
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2001-Oct-10
Document File: 1 page(s) / 38K

Publishing Venue

Motorola

Related People

Stephen Strom: AUTHOR

Abstract

The Dip Switch Tester employs an alternating daisy chained wiring technique. This technique simplifies the design of the tester and permits it to test for both inter-conductor shorting and discontinui- ty.

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ROLA Technical Developments Volume 2 January 1982

DIP-SWITCH TESTER By Stephen Strom

The Dip Switch Tester employs an alternating daisy chained wiring technique. This technique simplifies the design of the tester and permits it to test for both inter-conductor shorting and discontinui-

ty.

   The Figure portrays a dlp switch and the direction of current flow through the switch. The LED is used to sense if there is current flow in the appropriate directlon. If the LED is illuminated, then the switch is considered to be functional. If there are any shorts within the dip switch, the LED will not be ii- luminated. Shorting within the switch essentially shorts points A, B, C and D together, thus disabling the LED. Since the battery is in series with a resistor, this condition is not harmful to the power supply. In the case of discontinuity, no current would flow between points B and C, thus the LED would not be ii. luminated.

0 Motorola, Inc. 1982 37

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