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It can be used as a feedback and to ground unwanted signals and frequencies
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A dc voltage source of 10V is in parallel with a current source of 5A and a resistance of 1 ohm what will be the current across the resistance?
use kvl or kcl
How can you use a 3 phase capacitor as a single phase capacitor?
Just use any two of the three terminals that are available, this will give you a single phase capacitor.
How do you determine if the capacitor is defective?
To determine if a capacitor is defective, use an Ohmmeter of a Multimeter.
Why you use capacitors in power supply?
You use a capacitor to store electrostatic energy. You use an inductor to store electromagnetic energy. You use a resistor to dissipate electrical energy.
Why use capacitors on fan motors?
capacitor stores charge ,so we use capacitor in fan for continuous voltage supply.
Do capacitors have internal resistance?
1. The capacitor has Lead resistance in series with the capacitor2. Since most capacitor use Dielectric and they have a leakage resistance and it is parallel to the Ideal Capacitor.
Why we use emitter resistance in circuits?
The emitter resistor is connected to ground(in the case of an rc coupled amplifier).Also input signal applied at the base is grounded.Then the emitter resistor forms a feedback to the input signal (through the ground return path).So emitter resistor is also called feedback resistor.
What is the use of mylar capacitor?
myler film /myler capacitor is specially designed for low inductance and low resistance,so it has an prpoperty of fast discharging energy
Why we use blocking and by pass capacitor in CE amplifier?
As the DC component in the signals are not required to be amplified, rather not required at times. Thus a blocking capacitor blocks this DC component from.entering the amplifier. Bypass capacitors are used at the emitter end so that the AC signal reaching the emitter end does not alter the biasing required to maintain the Q-point. All the above happens using the basic characteristic of a capacitor, that it blocks DC and passes AC.
How a trimmer capacitor use?
A trimmer capacitor is a semi-adjustable capacitor placed across a variable tuning capacitor and pre-set to allow the main capacitor to track correctly with another variable capacitor on the same shaft. The adjustment takes out any differences introduced by the connected circuit.
Use second order differential equation to solve RCL series circuit?
we use charge stored in the capacitor as our variable (remember it one of the three variable). so the potential difference across the capacitor is --charge stored in the capacitor at that instance/capacitance of the capacitor. potential difference across resistor is --resistance* differential of charge with respect to time. potential difference across inductor is -- inductance*double difference of charge with respect to the time. If there is no voltage source attached with the network then sum of the total potential difference is equal to zero hence your solution.........L*d^2(q)/dt^2 + R*d(q)/dt + q/c =0
What is the use of resistance in timer?
The resistor and capacitor helps you to adjust the time period (or frequency) of the timer. (Usually astable multivibrator is used as a timer in electronic circuits) More the resistance, less is the current flowing through it. If the current flowing through is it to charge the capacitor is less, then the capacitor charges slowly. The timer changes it's state when the capacitor charges to a specific voltage ( Usually 1/3Vcc or 2/3Vcc). As it is made to charge slowly due to the high resistance, the clock frequency decreases. In the same way, to increase the frequency of the timer, the resistance value needs to be reduced.
How do you check a capacitor to see if it is good or bad?
There are many ways. FIRST: short the terminals to ensure it is not charged. Many of the digital meters today also have a capacitance check setting, simply use that setting. It not only checks for faults, but also will give you a reading of the capacitance value itself. For most non-electrolytic capacitors a quick check (definately bad vs. maybe good) can be done with an analog VOM. Use the highest resistance scale to measure across the terminals. When first connected there should be a short needle jump that slowly drops back to infinity. Reverse the leads and do it again, should have the same effect. Any resistance highter than infinity indicates a shorted capacitor. Lack of needle jump may indicate an open capacitor (or one of very little capacitance). Electrolytics can also be checked with a VOM, but polarity must be observed, and the drop back to infinity may take a very long time. Alternatively, for electrolytics and larger capacitors is to charge them with a low voltage source (e.g. 9V battery) and measure with multimeter to see if they hold the charge.
What is the use of rvt in capacitor bank?
Use of rvt in capacitor bank
Can you use a 25K capacitor instead of a 2.2K capacitor?
In general, no. You need to use the correct capacitor as designed for the circuit.
Could anybody please explain how exactly high pass and low pass filters work?
Filters are composed of capacitors and inductors. These component "react" differently to different frequencies. If you modulated the voltage frequency to a series capacitor, it would start out looking like a very big resistance, which would become incrementally smaller as the frequency is increased. Inductors act in the exact opposite fashion. A simple lowpass filter is compossed of a resistance and capacitor in series, with the output across the capacitor. Using a voltage divider: Voutput = Vinput * (resistance of cap) / (resistance of cap + R) A simple highpass filter is composed the same, with the output across the resistor. This type of filter is a first order filter, because there is one inductor or capacitor. Adding more of these elements will cause rippling in the frequency response, and can cause the rolloff / decay to occur faster. Putting two capacitors in series or parallel "looks" like one element, so for a second order filter you must use a cap and an inductor. For a third order, you must use two of one and one of the other "in between" them - for example have the input to a capacitor, where the other side is tied to the inductor and other capacitor; the inductor's other terminal is connected to ground, and the output is from the other capacitors second terminal.
How do NPN transistors work?
on or off
