An ideal diode is a simplified model of a diode that does not exist but is used for simple circuit analysis.
A practical diode is the real thing. A model of a practical diode used for circuit analysis purposes includes many parasitic components in addition to the diode.
part from the useful attenuators described above, voltage division often occurs unintention-ally. This is shown best when we consider practical voltage and current sources. The ideal of avoltage source, maintaining a constant voltage across a load, is approached to a fair extent bythe well-known batteries and accumulators. However, by short-circuiting a battery, a reducedvoltage is the effect, rather than an infinite current.In fact, the stated (nominal) voltage of 1.5V of the familiar "dry cell" exists only when nocurrent is drawn from it. The more current is drawn, the more the voltage decreases. In fact,this can be explained as a resistance in the voltage source.Thus, a real voltage source can be considered as an ideal voltage source in series with a(small but noticeable) "source resistance"
R
src
. This is also called "internal resistance" or"output resistance", since it is manifest at the output of the voltage source. Thus, a practicalvoltage source can be represented in the way shown in Fig. 1-14A. The source resistanceis not an added component, but rather an unavoidable property of any voltage source. The"load resistance"
R
load
is the representation of the lamp, motor, instrument or whatever isconnected to this voltage source. It is easy to see that source resistance and load resistancetogether form a voltage divider, each getting their share of the total voltage, also called the"electromotive force
An Ideal pendulum is ones that would be the first choice if you could choose all the materials (ideal materials). A practical pendulum is one that is readily available and reliable (made from things you have right now and are available to use).
The simple switch conducts in both directions. The ideal diode conducts in only one direction.
What is the difference between ideal and actual cycle?
zener diode
Consider ideal diode to be connected in series with resistor of 6kSilicon diode forward bias voltage = 0.7 voltsCurrent across 6k resistor = (5-0.7)/6000 amperesVoltage across {resistor + diode}=4.3 + 0.7=5vIf silicon internal resistance is 6k then voltage across diode=5vIf external resistance is 6k and diode resistance is negligible then voltage across diode=0.7v
Zener diode is heavily doped pn junction diode.
An Ideal pendulum is ones that would be the first choice if you could choose all the materials (ideal materials). A practical pendulum is one that is readily available and reliable (made from things you have right now and are available to use).
The simple switch conducts in both directions. The ideal diode conducts in only one direction.
Ideal filters having sharp cut-off & sharp cut-in for LPF & HPF but in practical filters there is some roll-off rate based on the order.
zener diode :zener diode operates under reverse bias voltageideal diode :ideal diode operates under forward bias voltage
What is the difference between ideal and actual cycle?
Ideal sources refer to the most accurate and reliable sources of information available, while practical sources are those that are readily accessible and convenient to use, even if they may not be as reliable or comprehensive. It is important to balance ideal and practical sources when conducting research to ensure accuracy and efficiency.
zener diode
The ideal age difference should be between 4 and 7.
An ideal diode would match the purpose of a diode without any of the drawbacks. The purpose of a diode is to control current flow - The diode "turns on" for current flowing in one direction, and "turns off" if current wants to flow in the other direction. Ideally, there would be no voltage drop across this diode when allowing current flow, thus no power loss. When the diode is "turned off" by a negative voltage, idealy there would be no current flow (no matter how large the negative voltage).
The Zener diode has the characteristics of a constant voltage source.
Consider ideal diode to be connected in series with resistor of 6kSilicon diode forward bias voltage = 0.7 voltsCurrent across 6k resistor = (5-0.7)/6000 amperesVoltage across {resistor + diode}=4.3 + 0.7=5vIf silicon internal resistance is 6k then voltage across diode=5vIf external resistance is 6k and diode resistance is negligible then voltage across diode=0.7v