Switching mechanism for interval drive - has astable transistorised saw tooth oscillator for vehicle windscreen wiper motors

Switching mechanism for interval drive - has astable transistorised saw tooth oscillator for vehicle windscreen wiper motors

When the switching relay is put in the parking position, the short circuit in the brake system is broken and the brakes applied. The saw tooth oscillator is controlled additionally by a transistor switching stage. This is achieved by the positive voltage being connected via the collector of the PNP...

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Hauptverfasser: KNOBLOCH,UWE, HETZEL,FRIEDRICH, GILLE,GUENTHER
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Sprache:eng ; ger
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PERFORMING OPERATIONS
SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
TRANSPORTING
VEHICLES IN GENERAL
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creator KNOBLOCH,UWE
HETZEL,FRIEDRICH
GILLE,GUENTHER
description When the switching relay is put in the parking position, the short circuit in the brake system is broken and the brakes applied. The saw tooth oscillator is controlled additionally by a transistor switching stage. This is achieved by the positive voltage being connected via the collector of the PNP switch. The minus potential is connected via a compensating resistor to the of position of the parking switch and the emitter connected via a decoupling diode to the wiper motor. The off position of the parking switch has a voltage dividing resistor, in parallel, controlled by the switching transistor. Overloading across the relay switch contacts is avoided.
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subjects PERFORMING OPERATIONS
SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
TRANSPORTING
VEHICLES IN GENERAL
title Switching mechanism for interval drive - has astable transistorised saw tooth oscillator for vehicle windscreen wiper motors
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