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Reducing Relay Pickup Time

IP.com Disclosure Number: IPCOM000096186D
Original Publication Date: 1963-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Laidig, W: AUTHOR

Abstract

The circuit reduces the pickup time of fast-acting magnets, preferably relays, having at least two pickup coils. At the moment of turnon, the initially uncharged condensers 7 each represent a short circuit. Thus, the coils 1 -2 and 3-4 of relay b are connected in parallel and are subject to full D. C. potential. Therefore, diode 9 is initially poled in the backward direction.

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Reducing Relay Pickup Time

The circuit reduces the pickup time of fast-acting magnets, preferably relays, having at least two pickup coils. At the moment of turnon, the initially uncharged condensers 7 each represent a short circuit. Thus, the coils 1 -2 and 3-4 of relay b are connected in parallel and are subject to full D. C. potential. Therefore, diode 9 is initially poled in the backward direction.

With the charges of condensers 7 increasing, the voltage connected across the coils decreases. Diode 9 starts conducting a current from terminal + to coil 1-2, diode 9, coil 3-4 to terminal -.

The condensers are prevented from charging any further and the coils are thus connected in series to the D. C. potential.

When switch 12 is opened, diodes 10 and resistors 11 prevent condensers 7 from being charged by the cutoff voltages induced in the coils.

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