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What is the load resistor?
At the most basic level, load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit. A load resistor is a resistor that has the sole function of increasing the load resistance of the circuit to a specific level.
How do you calculate amp load resistance?
The generalised formula for the input impedance of any circuit is ZIN = VIN/IIN. The DC bias circuit sets the DC operating “Q” point of the transistor and as the input capacitor, C1 acts as an open circuit and blocks any DC voltage, at DC (0Hz) the input impedance (ZIN) of the circuit will be extremely high.
What is load resistor for?
Load resistors are used for impedance matching, maximum power transfer, to improve output stability and to ensure a minimum of current flow. in switching power supplies, they are essential for the proper operation of the psu.
What is the load resistance of a common emitter amplifier?
An common emitter amplifier circuit has a load resistance, RL of 1.2kΩ and a supply voltage of 12v. Calculate the maximum Collector current ( Ic) flowing through the load resistor when the transistor is switched fully “ON” (saturation), assume Vce = 0.
Is there a load resistor in the voltage regulator?
In the circuit above, the voltage regulator circuit is intended to drive the load resistor R 1. However, because of the way this regulator works, it must have something attached to it to draw a minimum current in order for it to regulate properly. In order to comply with that requirement, an internal “load resistor” R 2 is included.
What are the requirements for a transistor circuit?
Choose a transistor of the right type (NPN or PNP from step 1) to meet these requirements: The transistor’s minimum current gain hFE(min) must be at least 5 times the load current Ic divided by the maximum output current from the IC. max.
How is a load resistor an abstract term?
A load resistor is actually a bit of an abstract term… If you consider an electrical circuit is intended to act upon some other device in order to perform “work” then that external device is the “LOAD” of the circuit. However it is not that simple, since load must have a reference.