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A: Depends on the circuitry involved an op amp normally has a 90 Db rejection from variation, Logic gates however are more sensitive to power supply variation for the simple point that triggering points changes which translate in false triggering and the circuits miss behaving
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What effect a capacitor has on a supply current on an inductive load?
it will improve the power factor... The angle between voltage and current will decrease depends on capacitor value.
Can the power supply provide a negative voltage output?
Yes. Depending on the design, the power supply can provide any voltage desired.
How do you amplify voltage?
if it is an A.C supply we can amplify by transformers, transistors, voltage doublers and voltage multipliers. but if it is an D.C supply, the voltage can be amplified only by means of choppers (i.e buck converters, boost converters and buck boost converters)
What is the peak inverse voltage rating of diode in bridge rectifier?
2x the peak supply voltage!
What are the two advantages of voltage-divider bias?
only one dc supply is necessary.Operating point is almost independent of β variation.Operating point stabilized against shift in temperature.
What is considered to be the maximum allowable supply voltage variation?
+or- 5%
What do you understand by stabilizer explain its uses?
A Stabilizer maintains the voltage across a load constant no matter how high the current goes.It can be used to maintain the voltage across a load constant no matter the variation in supply voltage and also it can be used to maintain the supply voltage constant no matter the variation in load.
How capacitor and resitor in a circuit effect the phase of input voltage?
A capacitor and a resistor has no effect on the supply voltage; however, this particular load combination will cause the load current to lead the supply voltage by some angle termed the 'phase angle'.
How does charging the voltage of the power supply change the effect of the electromagnetic?
search it in wikipedia or google
What do you use to check for a line voltage sags?
There is a type of voltmeter which prints out a graph of voltage against time. This can be left installed in a wall outlet for a period of time, such as a week, and it will provide a record of the supply voltage variation over that period.
Can voltage increase or decrease in a system during a day?
Power supply voltages vary with the amount of load placed on them. In many countries the supply voltage has a nominal voltage and a plus or minus tolerance. In the UK the nominal voltage is 230 v but the allowable variation is -6% +10%, in other words 216-253. At my house the voltage is usually between about 236 and 253 volts.
Heating effect of a 5 amp of AC compared to 5 amp of DC?
Electrical current alone has no heating effect. Current through a device, with a voltage across the device will have a heating effect. The equation for calculating it is power = voltage x current, where power is proportional to the heating effect If the AC supply is measured as an RMS voltage and an RMS current and the device is resistive, then the heating effect will be identical to the same values with a DC supply. RMS means the "average" voltage or current of an AC supply whereas the peak AC voltage refers to the highest voltage that is reached on each cycle. However, if the device is not just resistive but is inductive, the heating effect will be lower with an AC supply than with a DC supply. By inductive, we mean that the device has a coil or capacitor, for example, in the circuit. The reasons why are outside the scope of this answer but are explained in many electronics text books, or look up "power factor" on google
What are the characteristics of an ideal transformer?
1. Effect of primary voltage= there is no wide variation of supply voltage to which primary winding of pt is connected .therefore the study of variation of ratio nd phase angles wd supply voltage is nt important.....
What are the three factors that effect the electrical parameters of a op-amp?
Supply voltage , temperature , frequency are factors that effect the electrical parameters of opamp
How can you get 12volts supply from speaker?
You can not. Speakers do not supply a voltage they need a voltage to operate correctly.
How does the number of bulbs affect the amount of electrisaty in a circuit?
Adding additional lamps has no effect on the supply voltage supplied to you home. If the lamps are connected in series, then the sum of voltage-drops appearing across each lamp will equal the supply voltage. If the lamps are connected in parallel, then the voltage across each lamp will equal the supply voltage.
What is the principle cause of voltage variation?
Changes in load.
