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What is active pull up of a circuit?

Updated: 12/24/2022
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Q: What is active pull up of a circuit?
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What is a circuit parameter?

Circuit parameters can be classified as:1-- Active or Passive2-- Linnear or Non-linnear3-- Unilateral or Bilateral4-- Lumped or Distributive1-- Active or Passive:Those circuit elements that supply energy to an energised circuit are called active circit elements. Eg.: Voltage source, current source,etc.Note: It is important to note that dependent sources cannot be placed under this category as they depend on the value of current or voltage in any other branch of the network.Passive circuit elements, on the other hand, are those elements that use up the energy supplied by the active sources and\or do not supply their own energy to the circuit.Eg.: Resistor, capacitor, inductor, etc.Note: It is important to note that a capacitor does store energy and also supplies it back to the circuit but this energy is not of its own, instead it's the energy supplied by some active component. Hence, it cannot be placed under the category of active circuit parameters.Thus an energised network(or a circuit) consists of both active and passive elements.2--


Why a pull up resistor is so called?

A pull up resistor is often used in an open-collector circuit, where there is a transistor that can pull to down ground, but there is no transistor to pull up to Vcc. When the transistor is off, the pull-up resistor "pulls-up" the voltage to a point where any connected circuit "sees" the voltage and "knows" the transistor is off. This is often used in circuits where many output gates can drive a single line. Any one gate can pull the line low, while all gates have to be off to allow the line to pull high. In the alternate configuration, a totem-pole system, there are two transistors, one to pull low and one to pull high. If you have multiple gates on a common line, you must three state (turn off both transistors) on the non driving gates, or there will be conflict between gates and possible damage.


What the advantages of active and passive device?

An active device is any type of circuit component with the ability to electrically control electron flow (electricity controlling electricity). In order for a circuit to be properly called electronic, it must contain at least one active device


What is a passive element in a circuit?

A passive element is an element of the electrical circuit that does not create power, like a capacitor, an inductance, a resistor or a memristor.


What a weak pull up resistor?

A: That refers to a resistor pull up that is not sufficient to do the job that is to pull up. It also means is greater in value that it should be

Related questions

What is active pull up in TTL NAND gate?

All standard TTL devices use a two transistor "totempole" output, one transistor provides an active pull down and the other an active pull up. Only one of these transistors is on at a time and one or the other is always on. Open collector TTL devices omit the active pull up transistor so that several outputs can be "wired" together and an external resistor provides a passive pull up. The only problem with this is the risetime of a passive pullup is much longer than the risetime of an active pull up, making the circuit slower. Tristate TTL devices have the same two transistor "totempole" output as standard TTL devices, but the circuits that control these transistors are more complex allowing a "third state" in which both transistors are turned off, leaving the output of the device floating. This allows many tristate TTL devices to be connected to a single line with only one actually driving it at a time (preventing conflicts with one device pulling up and another pulling down).


Is the pulmonary circuit is not active in the developing fetus?

It is NOT active in the developing fetus.


Is The pulmonary circuit active in the developing fetus?

no


What is class AB push pull amplifier and give its circuit and description .?

"What is class AB push pull amplifier and give its circuit and description .?"


What is an active power?

An active power is the real component of the power of an alternating current circuit.


What is a circuit parameter?

Circuit parameters can be classified as:1-- Active or Passive2-- Linnear or Non-linnear3-- Unilateral or Bilateral4-- Lumped or Distributive1-- Active or Passive:Those circuit elements that supply energy to an energised circuit are called active circit elements. Eg.: Voltage source, current source,etc.Note: It is important to note that dependent sources cannot be placed under this category as they depend on the value of current or voltage in any other branch of the network.Passive circuit elements, on the other hand, are those elements that use up the energy supplied by the active sources and\or do not supply their own energy to the circuit.Eg.: Resistor, capacitor, inductor, etc.Note: It is important to note that a capacitor does store energy and also supplies it back to the circuit but this energy is not of its own, instead it's the energy supplied by some active component. Hence, it cannot be placed under the category of active circuit parameters.Thus an energised network(or a circuit) consists of both active and passive elements.2--


What is an analog circuit?

the circuit which contain passive components such as (capacitor,inductor,resistance) and may also contain Active components like transistorsif there is a transistor in the circuitit is ANALOG circuit if it is used in the active modeit is DIGITAL circuit if it is used in the saturation and cutoff mode


What type of component can amplify the current in a circuit?

A transistor, working in active mode, can amplify a current in a circuit.


Why a pull up resistor is so called?

A pull up resistor is often used in an open-collector circuit, where there is a transistor that can pull to down ground, but there is no transistor to pull up to Vcc. When the transistor is off, the pull-up resistor "pulls-up" the voltage to a point where any connected circuit "sees" the voltage and "knows" the transistor is off. This is often used in circuits where many output gates can drive a single line. Any one gate can pull the line low, while all gates have to be off to allow the line to pull high. In the alternate configuration, a totem-pole system, there are two transistors, one to pull low and one to pull high. If you have multiple gates on a common line, you must three state (turn off both transistors) on the non driving gates, or there will be conflict between gates and possible damage.


When the switch is push to the on position the circuit is?

Active, hot, on, or live.


What are active elements in circuit?

A; Any components that provide gain/loss are active device resistors, capacitors are passive


Why you use pull up resister at port-0 in 89c51?

Only port 0 needs pull-up resistors to be connected externally if you want to use it as out put port, because it has no in built pull up circuit so it can't give +5v as out put. refer micro controller and applications book by mahmed ali mazidi.