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????????. ??? ?? ???????. Unit 9 Motor Controller. ???? : ???. Index. Text 1. Introduction 2. Relay 3. Contactor. Reading materials 1. Time Relay 2. Novel controller 3. Experiment material. Exercises 1. Put the Phrases into English 2. Put the Phrases into Chinese

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1.04k views • 83 slides
Air Conditioning

Air Conditioning

Air Conditioning. Starting Relays. Starting Relays. Purpose Remove the start winding and/or start capacitor from the circuit Compressor start relays are mounted outside the motor Centrifugal switch could not be used in hermetic motor. Types of Relays. These are the three most common

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499 views • 33 slides
Air Conditioning

Air Conditioning

Air Conditioning. Relays and Contactors. Relays. The relay is an electrical device consisting of a coil and a set of contacts. The coil and the contacts are isolated (protected) from each other. It is designed to be useable where one circuit must control another. Schematic Symbols of a relay.

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503 views • 30 slides
RLL: Relay Ladder Logic

RLL: Relay Ladder Logic

RLL: Relay Ladder Logic. CONTENTS 1. PLC operation 2. PLC programming 3. Ladder logic 4. Memory and gates. PLC operation. A PLC has 2 modes of operation Programming mode: translate engineering language (control logic) to machine language (binary code)

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268 views • 20 slides
Computer Fundamentals

Computer Fundamentals

14. Computer Fundamentals. Advanced Automotive Electricity and Electronics James D. Halderman. FIGURE 14.1 All computer systems perform four basic functions: input, processing, storage, and output.

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388 views • 15 slides
COMPUTER FUNDAMENTALS

COMPUTER FUNDAMENTALS

71. COMPUTER FUNDAMENTALS. Figure 71-1 All computer systems perform four basic functions: input, processing, storage, and output. Figure 71-2 A potentiometer uses a movable contact to vary resistance and send an analog voltage right to the PCM.

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295 views • 14 slides

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