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i know that an op amp can be used as an amplifier and a switch, but i want to have more uses of the component or device.
It could act as one when the circuit is closed, but when the circuit is open, I believe you would define the air as the thing resisting current. In basic circuit problems the switch usually doesn't have any resistance of its own (ie as negligible as the resistance in a wire, so it is ignored).
They don't wear out for the most part,just fail to work. If something seems wrong,it is most likely the wiring,switch,outlet,or component.
The power on switch
Usually a centrifugal switch. When the rotor reaches proper speed, the weights fly out and move a set of contacts so they are disconnected, thereby disconnecting the starting circuit.
A transistor is an electronic component. By itself it has little use. An amplifier is a complete, functional circuit, generally made up of several components. A transistor can be a component part of an amplifier, however an amplifier may be constructed without any transistors (using vacuum tubes instead, for instance).
That will depend on the setting of the meter switch and the circuit connected to the component (if there is one).
I wanna use resistor , capacitor and amplifier 7173 for switch alarm circuit. How can i choice resistor and capacitor value because i wanna use 24V DC.
usually in series
i know that an op amp can be used as an amplifier and a switch, but i want to have more uses of the component or device.
A switch, switching transistor, or circuit breaker usually does.
Only because the circuit that its embeded in is designed that way. Remember, a transistor is basicly an amplifier ... only if you design everything to go to the extreams will it act as a switch.
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An open electrical circuit means that no electricity is flowing through the circuit. This could be because a switch is in the off position, or there is a break in the wiring, or a component in the circuit has failed, and other reasons are possible.
When the electrical circuit is completed - usually by closing a switch.
An IED (Improvised Explosive Device) time switch is the component which is set to delay the explosion of the bomb. Other components require a fuse, container and the charge.
Usually a switch that is charged is an CLOSED CIRCUIT therefore is considered to represent 1 in binary.