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it is a form of switch- all or nothing-0n and off, and for this reason it is often used as a master switch or main-disconnect. the single pole single throw has one switch blade, not the cutlery variety, which vaguely resembles a knife, hence the name, went he handle is down and in the contacts the switch is closed and the power is on. lifting the handle disconnects the circuit. they are somewhat obsolescent, but are retained for instructional purposes in shop and science classes, so there is a limited market for the smaller sizes. On the other hand a DPDT- Double Pole Double throw switch- or circuit breaker, is in everyday use and has defied obsolescence since the days of Edison. the DPDT is used on master switches and controls two circuits, usually with a center off position. Thet were used as aerial switches- to select transmit or receive in early shortwave and ham sets. they are very much around and have been nicknamed (Mousetraps) from their shape and outline. very much in use and I have a l907 electrical handbook that illustrates them some have shunts or condensers across the base ( wood or plastic, usually) of the switch. this has various uses but keeps the currents at a safe value in radio use.
Wiki User
∙ 12y ago
Wiki User
∙ 7y agoA knife switch is a type of switch used to control the flow of electricity in a circuit. It is composed of a hinge which allows a metal lever, or knife, to be lifted from or inserted into a slot or jaw. The hinge and jaw are both fixed to an insulated base, and the knife has an insulated handle to grip at one end.
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What is the importance of a electric switch?
Electric switch is very important because as you known that all the equipment we are using is useless without a switch. For example, if someone want to turn on its computer, it have to first on the switch without switching on the power supply is not gone in the equipment we using.
How does a house AC light bulb work off a switch?
All a switch does is make and break the supply of electricity to the lamp. If you get a chance to visit a science museum ask them to show you a "knife switch". Another place to see one is the Physics Lab at your local college or high school. Once you have seen a knife switch you will understand exactly how a basic switch works. It's quite simple really: a switch is a device which can be used to make or break a circuit. If that circuit carries a voltage which would be dangerous to people or animals then the handle of the switch must be made of a good insulator and the rest of the switch must be well shielded to stop anything else touching any live wires.
Does it make any difference where you place the switch in a circuit?
The place of connecting a knife switch does not matter as long as it is able to control the flow of current in a circuit.ÊThe only challenge is that it can present problems when used on high-power electric cables.
Can you light flint with a knife?
No. You can scrape a knife against the side of the flint to make sparks.
How do you make fire with a knife?
You can use the knife to create sparks from flint to start a fire.
Is it legal to carry a switch blade knife in Illinois?
No it is not.
Is it legal to carry a switch blade knife or automatic knife in NJ?
They were when I was growing up there. I suspect that they still are.
What states is it legal to carry a switch blade knife or automatic knife in Tennessee?
Yes it is elegal to carry switch blade butterfly and automatic knives any where in the usa . you could do it any way though but you should get a different knife.
What are different kinds of switches?
Mercury tilt switch, Knife switch, Footswitch, Reversing switch, Light switches, Electronic switches
In Indiana Jones Kingdom of the Crystal Skull what kind of knife did Shia LaBeouf have?
A pocket knife i think it was a switch blade
What is the importance of an electrical switch?
It allow you to disconnect power to an electrical device with the flip of a switch.
What is a spring assist knife?
Also called a "switch blade". They are generally illegal.
Maximum rating of a knife switch that can be opened under load?
Look on the inside cover of the switch for the specifications that are allowed by the manufacturer of the switch. A switch without arc chutes will have a very low rating.
Is it legal to carry a switch blade knife or automatic knife in Texas?
It is legal for you to carry an assisted opening knife but not a switchblade. An assisted opening knife does not have a button but does have a spring, you slightly open the knife and then it opens the rest of the way for you.Remember it has to be under 5.5 inches.
Ford Taurus Dome light switch?
If you need to replace your dome light switch you will need to remove the cover first. You can use your fingernails or even a small knife to get the cover off.
What are the main differences between pocket knives and switchblades?
switch blades' blades are inside the knife until you press some button or switch, but pocket knives are just knives i think
How does a light switch work?
If you get a chance to visit a science museum ask them to show you a "knife switch". Another place to see one is the Physics Lab at your local college or high school. Once you have seen a knife switch you will understand exactly how a basic switch works. It's quite simple really: a switch is a device which can be used to make or break a circuit. If that circuit carries a voltage which would be dangerous to people or animals then the handle of the switch must be made of a good insulator and the rest of the switch must be well shielded to stop anything else touching any live wires.
