By Alix Loane. Circuit. Publised at Monday, November 20th 2017, 00:18:44 AM. The real part and imaginary part of impedance are interpreted as a resistive part that dissipates energy and a reactive part that stores energy. Resistors can only dissipate energy and therefore their impedances have only a real part. Capacitors and inductors can only store energy and therefore their impedances have only an imaginary part. When resistors, capacitors, and inductors are combined, the overall impedance may have both real and imaginary parts. It is important to note that the definition of impedance preserves the definition of resistance.
By Sasha Sara. Circuit. Published at Monday, December 25th 2017, 07:47:25 AM. The concept of complex impedance introduces a unified representation for resistors, capacitors, and inductors, whereby a circuit’s frequency response from input to output can be determined using KVL and KCL, where each element is assigned the appropriate impedance. The key assumption to this point is that the input to the circuit must consist solely of DC and/or sinusoidal signals. Now, this analysis is be extended to include arbitrary input signals by using the mathematical techniques of Laplace transforms.
By Bertille Solange. Amplifier. Published at Monday, December 25th 2017, 06:04:45 AM. Amplifier gain is simply the ratio of the output divided-by the input. Gain has no units as its a ratio, but in Electronics it is commonly given the symbol “A”, for Amplification. Then the gain of an amplifier is simply calculated as the “output signal divided by the input signal”.
By Valentine Sybille. Circuit. Published at Monday, December 25th 2017, 05:39:30 AM. A simple low-pass filter circuit, which allows low frequency signals to pass through the circuit while attenuating high-frequency signals, can be made using a resistor and capacitor in series.The transfer function of this filter can be determined by analyzing the circuit as a voltage divider,
By Valentine Sybille. Amplifier. Published at Monday, December 25th 2017, 05:18:44 AM. At this point things can get a bit problematic. Where should the connections be made and how to connect them. I have found that the best place for a central ground to be at the signal input ground. This will be where the connections to other external equipment is made. In a typical audio component there will be left and right channel inputs. Each channel will be via a shielded cable from the source (CD, FM, etc.). At the input jacks I have found that you can connect the two input signal ground returns together (not to the chassis) using isolated jacks provided you do not run shielded cable with both ends connected together internally to the unit. This part is often hard to envision, but you do not want multiple ground paths for the signal. This is likely to cause a ground loop, more about that later. A common error is to connect the signal grounds together at the input jacks and then run shielded cable inside the unit to something like a volume control and connect the shields together there. The shields then acts as conductors and not solely as shields. Use only one end of the shield inside equipment. If needed, run a separate ground wire to the volume control or where ever the signal is going. It will be the ground reference for the signal and the shields will be only shields. This can greatly improve the signal to noise in a piece of equipment.
By Alix Loane. Diagram. Published at Monday, December 25th 2017, 03:55:15 AM. Learning about basic electronics and creating your own projects is a lot easier than you may think. In this tutorial, we’re going to give you a brief overview of common electronic components and explain what their functions are. You will then learn about schematic diagrams and how they are used to design and build circuits. And finally, you will put this information to use by creating your first basic circuit.
By Alix Loane. Circuit. Published at Monday, December 25th 2017, 03:27:19 AM. When multiple components are connected in parallel, the voltage drop is the same across all components. When multiple components are connected in series, the total voltage is the sum of the voltages across each component. These two statements can be generalized as Kirchoff’s Voltage Law (KVL), which states that the sum of voltages around any closed loop (e.g. starting at one node, and ending at the same node) is zero.
By Madeleine Catherine. Circuit. Published at Monday, December 25th 2017, 02:34:45 AM. Resistors, capacitors, and inductors are the fundamental components of electronic circuits. In fact, all electronic circuits can be equivalently represented by circuits of these three components together with voltage and current sources.
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