What is meant by stiff voltage divider?

Stiff voltage divider: A voltage divider in which the base current is small compared to the current in R2 (the base voltage is relatively Apr 5, 2012 22 independent of different transistors & temperature effects).

What is stiff circuit?

A “stiff” current is a current source with a very high (or infinite) source impedance. In other words, the current decreases very little (or not at all) as the voltage increases. (And the voltage will increase if the load impedance increases.) 810 views.

What is voltage stiff?

Voltage stiffness is a measure of the relative resistance (impedance) of the source compared to the load. A stiff voltage source has an output impedance that is much smaller than the load. ( Image: Electronics StackExchange)

What is a stiff power supply?

A power supply with a very-low internal resistance is sometimes called a “stiff” power supply. An inadequate power source almost always compromises the performance of electronic equipment. Audio amplifiers, for example, may produce distorted sound if the supply voltage drops with each loud pulse of sound.

What is the meaning of stiffness *?

the state or condition of being excessive, difficult, or severe:The council expressed concern about the stiffness of the fines and sentences for such minor infractions. …

What is collector saturation current?

Saturation collector current refers to the collector current value beyond which the relationship between the base and collector current is no longer linear (i.e. independent of the DC current gain beta).

Why do I need voltage divider?

Resistor voltage dividers are commonly used to create reference voltages, or to reduce the magnitude of a voltage so it can be measured, and may also be used as signal attenuators at low frequencies.

What is current stiff converter?

This converter utilizes two types of switching commutation schemes to improve the PWM current utilization rate. It is described that this power converter has effective performance of low THD and high current utilization rate by computer simulation results.

Which is the right condition for stiff voltage source?

A “stiff” voltage source is like a stiff mechanical structure. If a beam, truss, or frame is stiff, it won’t bend or sag under load. The heavier the load it can stand without sagging, the stiffer it is.

What is the internal resistance of an ideal voltage source?

zero
The internal resistance of an ideal voltage source is zero; it is able to supply or absorb any amount of current.

Which power supply is called a better power if voltage regulation is?

Voltage regulation is the measure of how well a power transformer can maintain constant secondary voltage given a constant primary voltage and wide variance in load current. The lower the percentage (closer to zero), the more stable the secondary voltage and the better the regulation it will provide.

What is stiffness in structural analysis?

In structural engineering, the term ‘stiffness’ refers to the rigidity of a structural element. In general terms, this means the extent to which the element is able to resist deformation or deflection under the action of an applied force.

What is a voltage divider?

It’s output voltage is a fixed fraction of its input voltage. The divide-down ratio is determined by two resistors. Written by Willy McAllister. A very common and useful series resistor circuit goes by the nickname voltage divider. We will work out how this circuit operates, and you will see where the nickname comes from.

Does a DC voltage divider work with a stiff base potential?

However, this works only in case the dc voltage at “other side” of the B-E path is kept constant (indpendent on temperature changes, tolerances and other uncertainties). That means that a “stiff” base potential is desired. This would require a very low-resistive voltage divider.

How to calculate the voltage dropped across a resistor using voltage divider?

In voltage divider, the output voltage always scales down the input voltage and the current flowing through the series network that can be calculated using Ohm’s Law, I = V/R. Since the current is common to both resistors, the current across them are equal. We can calculate the voltage dropped across the resistor R 2 using this equation:

What is the voltage divider equivalent of the Thevenin value?

Suitable standard values are R 1 = 130k, R2 = 150k. In step three, it says the Thevenin equivalent of the voltage divider used (R1//R2) should be at least ten times less than the apparent resistance of the load resistor RE (RE * hFE).