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An active device is a device that takes input energy to operate. The only energy a diode uses is from the signal applied to it (it has one input, one output, and no other terminals), so it is a passive device. To be an active device, a separate power source must be applied to it - such as the case for operation amplifiers, for example.
What else can I help you with?
What is a semiconductor device that allows electricity to flow in only one direction?
A "diode" will allow current to pass thru it in only one direction, provided you don't overload it.
How does active termination improve upon passive termination?
In active termination scheme it removes the thermal noise which results in the passive termination due to the end resistors..
What is a tranponder?
A transponder is a wireless communications, monitoring, or control device that picks up and automatically responds to an incoming signal. The term is a contraction of the words transmitter and responder. Transponders can be either passive or active.
Diffrentiate between active heatsink and passive heatsink?
In a active heatsink system you have both a heatsink and a fan thus for the most part an active heatsink cools better with one exception. Should the fan fail the active heatsink will quickly overheat. Passive heatsinks relay on transferring heat without the aid of a fan. The advantage here is that a passive heatsink is fail proof and uses 0 electricity, however passive heatsinks don't typical cool as well. Passive heatsinks work great for supporting chips and RAM cooling. They are also found in servers because of the no fail aspect. EnzoTech produces some passive heatsinks you can read a bit more about them here: http://electricalninja.com/
Difference between active and passive components?
ACTIVE COMPONENTS The components which produce the energy in the form of current or voltage are called as active components. Example:transistors etc,. PASSIVE COMPONENTS The components which stores the energy in the form of current or voltage are called as passive components. example:inductors,resistors,capacitors etc,. Mrityunjay k pandey radix computer college panna naka satna mob:-09926026201
Is diode an active device?
A passive device is a diode resistor coil and so forth it perform no enhancement to the circuit or act on it.
A potentiometer is a active device or passive device?
passive
What causes a damage or alters a pn junction diode?
A: A devices whether active or passive have a power dissipation limits. By abusing this limit the device can become faulty and unreliable
Is relay active or passive?
Relays can be both active and passive components, depending on how they are used in a circuit. When a relay is used as a switch to control a larger current circuit, it is considered an active component. When a relay is used to isolate one circuit from another without actively controlling the flow of current, it is considered a passive component.
What is active devices?
An active device amplifies the signal by some value - such as an active filter using an OPAMP. A passive device does not provide any amplification - such as a passive filter network of inductors and capacitors.
What is the difference between active load and passive load?
Passive Load is Load comprising of Passive Components Active Load is the Load comprising of Active Components In Test Boards its better to use Active Loads, If you are concerned about Temperature Variations during characterisation
Why is an inductor called as passive device where as a resistor is called active device?
They are both passive devices. An active device is a device that uses semiconductors (or tubes) to process signals instead of using the natural processes of capacitance, inductance or resistance.
What difference in electrical and electronic device?
A: The difference is PASSIVE / ACTIVE
What is the meaning of electrical components?
Electronic component are those component which are used to make the electronic circuit it may be active or passive . some active components are - Diode ,FET,BJT,MOSFET, and HEMT etc. while passive component are those device which can not process/amplify signal like- resistor capacitor inductor etc.
Is relay an active or passive device?
Yes, it is an electrically operated switch.
What is the device that produce gain active or passive?
Either. although a passive device can only produce gain from 0-1 (-inf to 0dB) an active device on the other hand is capable of producing gain thats greater than 1 (0dB)
Why active filters so called even though uses passive resistors?
It has to have resistors but an active filter will alsol have an active device, usually an op-amp, while a passive filter has only passive components and needs no power supply.
