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Browse Prior Art Database

Relay Counter

IP.com Disclosure Number: IPCOM000098602D
Original Publication Date: 1959-Jun-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Eldridge, GF: AUTHOR

Abstract

This circuit is a decimal counter for pulses. With C in a discharged state and R1 ready to be energized, the first input transfer causes capacitor C to charge through R1 picking R1, which holds through R2-2 and R1-1. The transfer time,of the relay allows C to only partly charge so the voltage is insufficient to pick R2, when R1-3 is closed. When the input is returned, R1-4 has transferred, allowing C to charge to +50V.

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Relay Counter

This circuit is a decimal counter for pulses. With C in a discharged state and R1 ready to be energized, the first input transfer causes capacitor C to charge through R1 picking R1, which holds through R2-2 and R1-1. The transfer time,of the relay allows C to only partly charge so the voltage is insufficient to pick R2, when R1-3 is closed. When the input is returned, R1-4 has transferred, allowing C to charge to +50V.

Upon the second input transfer, R2 picks and drops out R1 and energizes R11 to keep R1 released until the 11th pulse. Also, R2 allows R3 to be picked upon the next input transfer. The action continues in cascade up to the 10th transfer. When a 10 count is reached, R10 stores the count and transfers it to the 10's column and also drops out R11 which resets R1 for the next ten consecutive counts. Any number of such repetitive stages may be added to increase the storage of information. Operation time is dependent upon the relay transfer time and is not a function of the input transfer duration. The circuit by slight modification may be used as a ring counter or divider.

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