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Introduction to Brake Systems – Study Guide

Introduction Everybody knows that when you press your foot on the brake pedal the vehicle is supposed to stop. But how does the pressure from your foot get to the wheels with enough force to stop a heavy vehicle? In the following sections, we will study the systems and components required to allow brakes to work effectively. Course Objectives Upon completion of this course, technicians should understand and be able to apply their knowledge of: • • • • • • • • • • • • Brake functions and components Split hydraulic systems Master cylinder operations Balance control systems Power brake booster systems Disc brake operation Micrometer reading Drum brake operation Brake fluids Brake bleeding operations Brake lines and hoses Basic diagnosis Using the Job Sheets As you proceed through the online module, on some pages you will find links that will open a window with a printable procedure or job sheet containing hands-on lab activities based on the NATEF standards related to the content you are studying. When you come upon a procedure or job sheet link, click on it and print the job sheet for completion in the shop. See your instructor for guidance in completing the job sheets. Some jobs sheets will require supplemental materials such as a vehicle service manual, equipment manual, or other references. Brake System Functions Automotive brakes are designed to slow and stop a vehicle by transforming kinetic (motion) energy into heat energy. As the brake linings contact the drums/rotors they create friction which produces the heat energy. The intensity of the heat is proportional to the vehicle speed, the weight of the vehicle, and the quickness of the stop. Faster speeds, heavier vehicles, and quicker stops equal more heat. Automotive brake systems can be broken down into several different sub-systems (fig. 1): • Apply system • Boost system • Hydraulic system • Wheel brakes • Balance control system • Warning system (fig. 1) Base Brake Systems .

BIOFLUID MECHANICS IN FLEXIBLE TUBES James B. Grotberg1 ...

When a flow is driven through a deformable channel or tube, interactions between fluid-mechanical and elastic forces can lead to a variety of biologically significant phenomena, including nonlinear pressure-drop/flow-rate relations, wave propagation, and the generation of instabilities. Understanding the physical origin and nature of these phenomena remains a significant experimental, analytical, and computational challenge, involving unsteady flows at low or high Reynolds numbers, large-amplitude fluid-structure interactions, free-surface flows, and intrinsically 2D or 3D motion. Whereas frequently the internal flow involves a single fluid phase (albeit often of a complex biological fluid such as blood), in many instances the presence of two or more distinct flowing phases is of primary importance (as is the case for air-liquid flows in peripheral lung airways, for example). We divide this review accordingly: Section 2 treats single-phase flows in collapsible tubes, Section 3 covers recent applications of such flows to a wide range of physiological 0066-4189/04/0115-0121$14.00

Shoe Types Explained
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Cushioned Shoes You should wear cushioned shoes if you are a runner who needs maximum midsole cushioning and minimum medial (arch-side) support. These shoes are best suited for biomechanically efficient runners (you don't overpronate), and midfoot or forefoot strikers. Runners who do best in cushioned shoes often have moderate to high arches. Motion Control Shoes You should wear motion-control shoes if you are a runner who overpronates moderately to severely. Motion-control shoes will give you maximum rearfoot control and extra support on the medial (arch) side of the foot. Motion-control shoes are also best suited for big or heavy runners who need plenty of support and durability. These runners often have low arches (flat feet). Performance Training Shoes You should wear performance-training shoes if you are a runner who wants a light, well-balanced shoe suitable for racing, speedwork, or daily training. These shoes are best-suited for fast, efficient runners who want to train in them. Moderate overpronators can also train and race in some of these shoes. Racing Shoes You should wear racing shoes if you have a biomechanically efficient stride, don't have any current injuries, and want an exceptionally fast, lightweight shoe for races. Many runners use performance training shoes or their regular training shoes for races. Stability Shoes You should wear stability shoes if you are a runner who needs medial (arch-side) support and good midsole cushioning. These shoes are best suited for runners who are mild to moderate overpronators, and/or need added support and durability. Trail Shoes...

Running Shoe Basics - Big River Running

Neutral (Cushioned) shoes...are most appropriate for neutral runners of all shapes and sizes who either do not pronate or roll slightly to the outside when they strike the ground (supinate) and have mid to high arches. Neutral shoes provide the most flexibility of any shoe. Stability shoes...are typically well-suited to the runner who has normal to mild overpronation and medium-to-low arches. They often have a medial post or multi-density midsole to provide a degree of pronation (see illustration below) control which can range from mild to heavy control. Motion control shoes...are highly rigid designed to limit severe over-pronation. They offer maximmum stability and medial support. Typically, they have an inner post and a multi-density or polyurethane midsole. They tend to be the heaviest, most durable, and most expensive running shoes. Motion-control shoes are geared toward the runner who tends to severely over-pronate and who has flat arches. Racing shoes...consist of spikes and flats used in cross country and track. Flats are lightweight shoes used for racing, usually on roads. They consist of minimal amounts of cushioning. Spikes are also used for racing, typically on grass or a track. Spikes usually have metal or ceramic “spikes” that screw into the bottom of the shoe to provide traction. Finding the right fit for spikes is based more on foot shape and feel rather than pronation.

MMA7660FC, 3-Axis Orientation/Motion Detection Sensor - Data Sheet

Document Number: MMA7660FC Rev 8, 03/2012 Freescale Semiconductor Data Sheet: Technical Data An Energy Efficient Solution by Freescale 3-Axis Orientation/Motion Detection Sensor MMA7660FC The MMA7660FC is a ±1.5 g 3-Axis Accelerometer with Digital Output (I2C). It is a very low power, low profile capacitive MEMS sensor featuring a low pass filter, compensation for 0g offset and gain errors, and conversion to 6-bit digital values at a user configurable samples per second. The device can be used for sensor data changes, product orientation, and gesture detection through an interrupt pin (INT). The device is housed in a small 3mm x 3mm x 0.9mm DFN package. MMA7660FC: XYZ-AXIS ACCELEROMETER ±1.5 g Features Digital Output (I2C) 3mm x 3mm x 0.9mm DFN Package Low Power Current Consumption: Off Mode: 0.4 µA, Standby Mode: 2 µA, Active Mode: 47 µA at 1 ODR Configurable Samples per Second from 1 to 120 samples a second. Low Voltage Operation: – Analog Voltage: 2.4 V - 3.6 V – Digital Voltage: 1.71 V - 3.6 V Auto-Wake/Sleep Feature for Low Power Consumption Tilt Orientation Detection for Portrait/Landscape Capability Gesture Detection Including Shake Detection and Tap Detection Robust Design, High Shocks Survivability (10,000 g) RoHS Compliant Halogen Free Environmentally Preferred Product Low Cost 10 LEAD DFN CASE 2002-03

Descargar aquí el formato - Totalplay

Portabilidad Numérica ¿Qué es la Portabilidad Numérica? El trámite de portabilidad consiste en conservar el mismo número telefónico que tiene actualmente con su compañía, al contratar Totalplay. Requisitos para tramitarla 1. Formato de portabilidad (debe contener los datos del Titular de la Línea Telefónica que desea portar, incluyendo firma). 2. Factura telefónica del proveedor actual donde se encuentra el número que desea conservar (la fecha límite de pago de ésta no debe exceder los 10 días naturales). 3. Comprobante de pago de la factura telefónica mencionada en el punto 2 (en caso que el pago de su servicio este domiciliado a una TDC, es necesario enviar el estado de cuenta de la tarjeta a la que se carga el servicio). 4. Identificación oficial del titular de la línea telefónica a ser portada (misma persona que firma el formato de portabilidad. Puede ser IFE, Pasaporte ó Cédula Profesional).

FM131 - Driveway Alarm - Mighty Mule
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ACCESS SYSTEMS PROFESSIONAL RESIDENTIAL ACCESS SYSTEMS PROFESSIONAL RESIDENTIAL ACCESS CONTROLS Driveway Alarm WIRELESS IN S TAL L AT ION M A N U A LACCESS SYSTEMS Kit Includes: PROFESSIONAL RESIDENTIAL A C A. Transmitter D. Transformer B. Sensor E. Mounting post (3 pcs) C. Receiver How It Works: E D The electromagnetic sensor detects vehicles in motion and sends a signal to the indoor receiver. The indoor receiver will chime when it receives the signal. B www.mightymule.com • www.gtoaccess.com Gates that Open, LLC • 3121 Hartsfield Road • Tallahassee, Florida 32303 1-800-543-GATE (4283) • Technical Support 1-800-543-1236 ©2012 Gates That Open, LLC Printed in China for Gates That Open, LLC. Rev. 03.04.12 Installation Overview Place the SENSOR immediately next to the driveway to maximize the sensing range, but at least 25 feet from roadways, neighbor’s driveways or large moving metal objects. The cable connecting the SENSOR and TRANSMITTER allows for the placement of the TRANSMITTER away from the driveway in the concealment of landscape or closer to the RECEIVER. Up to 400 ft. range from transmitter to receiver Senses vehicles and large moving metal objects within a 12 ft. radius The approximate transmitting range from the TRANSMITTER to the RECEIVER is 400 ft. Range can vary depending on environmental conditions such as RF interference and topography. Some adjustment may be required. NOTE: DO NOT place the TRANSMITTER in the direct path of a sprinkler. The TRANSMITTER is water resistant but not waterproof. If you don’t use the full length of signal cable from the SENSOR to the TRANSMITTER, coil the extra cable and bury it beside the transmitter stake. Place Driveway Sensor at least 25 ft. from roadways, neighbor’s driveways to prevent false signals ROADWAY For Optimum Performance: • Locate the SENSOR as far as possible away from power transformers, power lines, underground gas line, and telephone lines. • Locate the SENSOR away from general moving traffic to prevent unwanted activation. Remember that the SENSOR detects MAGNETIC DISTURBANCES caused by a vehicle’s mass and velocity. • Range distance is approximate and will vary due to outside interference, type of soil, vehicle mass, speed, etc. • It is recommended that you run the Signal Cable inside PVC conduit to prevent accidental damage. • Do not run the Signal Cable in conduit with other wires such as AC power or other control wires. • The SIGNAL CABLE CANNOT BE SPLICED. 2 Wireless Driveway Alarm Instruction Manual • 03.04.12 Sensor Placement HOUSE or BUILDING where RECEIVER is located Determining Sensor Location 400 ft. Max Wireless IMPORTANT: Clear an area 25 ft. in all directions of metal tools, toys and automobiles, to prevent magnetic disturbance during testing and installation. • Determine the optimum location for the SENSOR using the information found in “Installation...

Instruction Manual - SmartHomeUSA.com
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Troubleshooting and Frequently Asked Questions The transmitter lights up with motion, but the receiver does not react A: Did you TEACH the units to each other? If not, see page 2 and perform the Teaching steps. B: The units may be out of range, or blocked… see the next step; The transmitter is not getting the expected range To assure best range; A: Keep both antennas VERTICAL. B: Keeps the PIR Transmitter antenna away from trees and metal objects (at least 3”). C: Locate the Receiver near a window with the clearest possible sight of the PIR Transmitter. The less number of objects between the devices, the longer the range. I cannot hear the receiver when it signals The receiver is not made to be overly loud. If you need to have a louder signal, the receiver has a relay for attaching accessories, such as bells, buzzers, or lights. The relay is basically a switch that has no power of it's own, but can handle up-to 120 volts, 10 amps going through it. To connect an external device, determine the power it requires, and then wire as shown in previous pages. The transmitter is picking up people, but not cars Since vehicles can move fast, the PIR unit is not getting a long enough look at the moving object. Resolve by setting the PIR sensor at an angle to the road, as shown in previous pages. The unit is signaling constantly, when there is nothing there 1: Check for tree branches or other objects that might be moving in a breeze 2: Check for spiders or insects in the sensor window. 3: The sensor can be fooled by light shining directly into the window, reflected sunlight, car headlights, or motion in front of a steady light source. 4: Change the sensitivity setting. You can lower the sensitivity of the sensor, to avoid false alarms. See Below. Sensitivity settings The REPORTER is shipped pre-set to its highest level of sensitivity. Normally, there is no need to change the setting. However, if you are experiencing false alarms, the unit may need to be set to be less sensitive. There are two switches located, next to the test button, on the circuit board inside the transmitter. SW 2: Sensing distance from unit SW 1: Sensitivity to motion ON = High OFF = Low ON = 5-25 Feet OFF = 5- 15 Feet...

STI Wireless Driveway MonitorTM - Smarthome

STI-34150 - Battery Power Kit STI-34100 - Solar Power Kit Thank you for purchasing this fine product. We want you to know your satisfaction is very important to us. We suggest you take the time to read this manual carefully to get the most from your new product. HOW THE PRODUCT WORKS Because of its patented magnetometer SENSOR system, the Driveway Monitor will only be triggered by cars or trucks - not people, animals and so forth. When a vehicle passes the Motion Alert® SENSOR next to the driveway, the RECEIVER unit inside the office or home sounds a chime and flashes the alert light. The alert light will continue to flash until reset and the RECEIVER will continue to chime each time a vehicle passes. The earth has a uniform magnetic field around it. A vehicle creates a slight disturbance in the earth’s field. The SENSOR detects this disturbance and transmits a signal to the RECEIVER. BEFORE YOU START Refer to this drawing to become familiar with all the parts. TRANSMITTER CAP BATTERY / CIRCUIT BOARD HOLDER TRANSMITTER BASE MOUNTING TUBE CAP TRANSMITTER CIRCUIT BOARD TRANSMITTER CAP 2 “C” BATTERIES TRANSMITTER CIRCUIT BOARD 2 “C” BATTERIES BATTERY / CIRCUIT BOARD HOLDER TRANSMITTER TRANSMITTER BASE WALL MOUNT TRANSMITTER CAP WALL MOUNT MOUNTING TUBE CAP MOUNTING TUBE CAP RECHARGEABLE NiMH BATTERIES TRANSMITTER TRANSMITTER CAP SCREWS TRANSMITTER CAP WALL MOUNT MOUNTING TUBE CAP RECHA NiMH TRAN SCRE WA MOUNTING TUBE MOUNTING TUBE MOUNTING TUBE MOUNTING TUBE MOUNTING STAKE MOUNTING STAKE MOUNTING STAKE FINGER NOTCHES MOUNTING STAKE FINGER NOTCHES BATTERY POWERED SENSOR SOLAR POWERED SENSOR REMOVE PLASTIC TAB FROM BATTERIES REMO FROM 3’OR LESS 12’ MAX —1— PLACE SENSOR 3' OR 12’ LESS FROM EDGE OF MAX DRIVEWAY AND 25' OR TRANSMITTER RECHARGEABLE NiMH BATTERIES TRANSMITTER CAP SCREWS TRANSMITTER CAP MOUNTING STI-30104 TUBE CAPCONTROLLER LAMP WALL MOUNT (OPTIONAL) AC ADAPTER RECEIVER ANTENNA MOUNTING TUBE 12' MAX SPEAKER GREEN LED NGER OTCHES RECHARGEABLE NiMH BATTERIES MOUNTING STAKE TRANSMITTER CAP SCREWS BUTTON 3' OR LESS RED LED 75 mA OUTPUT DRIVEWAY 25' OR MORE STI-34104 INDOOR RECEIVER WALL MOUNT INDOOR RECEIVER STI-34104 (Receives up to 4 different STI sensors) BE REMOVE PLASTIC TAB CAP T R KE SE NSOR 3' OR M EDGE OF AND 25' OR M STREET. TUBE STAKE 104 R RECEIVER 0104 CONTROLLER ONAL) 12' Install Batteries into the TRANSMITTER FROM BATTERIES MAX TRANSMITTER CIRCUIT BOARD BATTERY POWERED (STI-34150): 3' OR LESS ...

WIRELESS DRIVEWAY ALERT SYSTEM - Home Depot

WIRELESS DRIVEWAY ALERT SYSTEM SYSTÈME D’ALARME SANS FIL POUR ENTRÉE DE GARAGE FEATURES CARACTÉRISTIQUES • Sensor & receiver • Wireless transmission up to 400 Feet • Sensor detects motion and triggers receiver to chime • Sensor detection range up to 8 meters • Sensor detection angle up to 30 degree • Volume HI/LOW switch • Alarm/Chime/Off select switch • Sensor 9V battery (included) • Receiver 3 C size batteries (included) • Battery low indicator for sensor and receiver • Wireless, easy installation • Water resistant sensor for outdoor use • Détecteur et récepteur • Transmission sans fil jusqu’à 120 mètres (400 pieds) • Détecte les mouvements et fait sonner le récepteur • Portée de détection jusqu’à 8 mètres (26 pieds) • Angle de détection jusqu’à 30 degrés • Interrupteur HI/LOW pour le volume • Interrupteur de sélection Alarm/Chime/Off • Détecteur fonctionnant avec une pile de 9 V (incluse) • Récepteur fonctionnant avec 3 piles C (incluses) • Indicateur de pile faible sur le détecteur et sur le récepteur • Sans fil, installation facile • Détecteur résistant à l’eau pour l’extérieur OPERATION FONCTIONNEMENT 1. Remove the battery cover screws from the sensor and receiver units, open the battery door and install 9V battery for PIR sensor and “C-size” batteries for the receiver. 1. Retirer les vis du couvercle de la pile sur le détecteur et sur le récepteur, ouvrir le réceptacle de la pile et installer une pile 9 V pour le détecteur de mouvements passifs à infrarouge et des batteries de taille C pour le récepteur. 2. Place the sensor unit at least three feet high above the ground. Position the sensor at the entrance of your driveway (on a mailbox, a tree or on a ground stake). You may also place the sensor on your garage, near the front entrance or rear door. Can be used to protect your yard from unauthorized trespassing. May help notify you if your children or pet leave the yard. Any movement nearby will transmit a signal to the receiver. (Fig.1)

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