Asked by Andy Blackwell Uncategorized
What look likes reed switch?
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Asked in Physics, Electricity and Magnetism, Magnetism
What is a reed switch used for?
What is a Door reed switch?
Asked in Home Electricity
How do reed switches work?
Reed switches work on a basic principle whereby the reed switch is a hermetically sealed glass tube containing two ferromagnetic reeds that will actuate when in the presence of a magnetic field. The magnetic field may be generated from a ferrous metal such as iron, a permanent magnet such as rare earth types and/or an electromagnetic coil as used in a reed relay. Reed switches have various electrical properties such as their sensitivity range which is generally specified in ampere turns (AT). The AT or sensitivity of the reed switch refers to the open and close points of the switch. When a reed switch is used in conjunction with a permanent magnet, it referred to as a reed sensor. Typically the reed switch is mounted to a fixed object and the magnet to the moving object. The strength of the magnetic field as well as the position and movement of the magnet relative to the switch will determine how many open and closure points will take place. Example: Parallel movement of the magnet to the switch can produce either one or three switch closures depending on its distance from the switch.
Asked in Physics, Electricity and Magnetism, Circuits
Can a reed switch affect the brightness of a bulb?
Asked in Woodwind Instruments, Oboe
What other woodwind instrument looks likes the oboe?
Asked in Electricity and Magnetism, Magnetism
Why does more current flow through copper wire than a reed switch?
Ideally the reed switch should be able pass as much current as the wire supplying it. A voltage drop across the switch would indicate resistance and suggest that the maximum rated current has been exceeded. Reed switches are delicate and should only switch small currents. They are used where actuation by a magnet is required, without mechanical interference. To switch larger currents a relay should be used, fed from the reed.
Asked in Magnetism
How is reed relay switch used in burglar alarms?
Lets look at the two devices in one, separately first. A reed switch looks like a elongated tiny light bulb. Inside, if your eyesight is good, you can see two overlapping, flat metallic reeds, that don't quite touch each other. Bring a magnet in close proximity and they will make contact, thus potentially closing a circuit. So you put a magnet on a moving object, like a door or window and the reed switch on the surrounding frame. When the door or window is closed and the magnet is very close to the reed switch, say no farther away than a quarter inch or half centimeter, it is activated and you can send some electricity through it, like a switch, to an alarm. Whooops, you probably already see the problem. We want the opposite to happen. We want electricity flowing to our buzzer, bells, lights etc, when the reed switch is open, i.e. magnet removed from proximity of reed switch. That's where the relay comes in because it's a double throw switch. When closed on two terminals, it's open on the other two, so we can reverse the situation with our reed switch by including the relay. Furthermore, relays can handle a lot more electrical current than a tiny , fragile reed switch. We can use the appropriately rated relay to even turn on some high wattage lights, when activated.
Asked in Elements and Compounds
Why does more current flow through the bulb when the reed switch was replaced with copper wire?
Asked in Car Computers and Sensors
How do you replace the speed sensor on your 1998 Hyundai elantra?
How do you build a door sensor alarm system using a simple circuit board?
Asked in Pontiac Sunfire, Toyota Sequoia, Toyota SR5
Your coolant light of your 97 sunfire 2.2 came on and it is full with radiator fluid what else can this be the light wont go off?
There is a sensor that is in the overflow bottle that may be bad causing the "low coolant light" to illuminate. The coolant level switch is located on the bottom side of the coolant tank. The switch contains a reed switch and a magnetic float. When the coolant level is normal, the float rests away from the reed switch, causing the switch to be open. When the coolant level decreases in the coolant recovery tank below a specified level, the float rests on the reed switch and the switch closes, illuminating the LOW COOLANT light. The coolant level switch is a part of the coolant tank. If the switch needs to be replaced, the coolant tank must be replaced.
Asked in Video Games
What if there is a guy and your friend likes him and you do to what do you do?
Asked in Clarinet
How do you put a clarinet reed in a reed Gard?
Look at the reed, first off, and notice how one side is flat and the other side has an incline and a type of bump. Put the reed into the reed guard thinnest side first and flat slide. At first it seems as if you might crush the reed or chip it, but the bump on the other side will stop it from doing that. And there you go, you put a clarinet reed into a reed guard. :)
Asked in Lyrics and Sheet Music
What song contains the lyrics Look at you look at me?