By Madeleine Catherine. Circuit. Publised at Saturday, August 05th 2017, 15:56:27 PM. In the hydrodynamic analogy of electronic circuits, resistors are equivalent to a pipe. As fluid flows through a pipe, frictional drag forces at the walls dissipate energy from the flow and thus reducing the pressure, or equivalently, the potential energy of the fluid in the pipe. A small resistor is equivalent to a large diameter pipe that will allow for a high flow rate, whereas a large resistor is equivalent to a small diameter pipe that greatly constricts the flow rate.
By Bertille Solange. Amplifier. Published at Wednesday, December 20th 2017, 14:39:29 PM. 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 Bertille Solange. Diagram. Published at Wednesday, December 20th 2017, 14:05:12 PM. Circuits often require output devices to communicate their state to an user. Examples of electronic output devices include computer monitors, LCD alphanumeric panels (as on a calculator), small lamps or light-emitting diodes (LED), etc. Digilent boards include different output devices, but all of them include some number of individual LED, and seven-segment LED displays that can display the digits 0-9 in each digit position (each segment in the seven-segment display contains a single LED). LED are two-terminal semiconductor devices that conduct current in only one direction (from the anode to the cathode). The small LED chips are secured inside a plastic housing, and they emit light at a givenfrequency (RED, YELLOW, etc.) when a small electric current (typically 10mA to 25mA) flows through them.
By Alix Loane. Circuit. Published at Wednesday, December 20th 2017, 13:59:31 PM. If the components are connected in a parallel format they would be termed to be a parallel series. In this sort of a connection all the components would receive the same voltage, while the current would be divided amongst the components.
By Bertille Solange. Diagram. Published at Wednesday, December 20th 2017, 12:52:32 PM. A digital circuit is constructed of a power supply, devices, and conduction nets. Some nets provide circuit inputs from the “outside world”; in a schematic, these input nets are generally shown entering the left side of component and/or the overall circuit. Other nets present circuit outputs to the outside world; these nets are generally shown exiting the schematic on the right. In the sample schematic below, circuit components are shown as arbitrary shapes, nets are shown as lines, and inputs and outputs are denoted by connector symbols.
By Madeleine Catherine. Circuit. Published at Wednesday, December 20th 2017, 12:33:05 PM. 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 Wednesday, December 20th 2017, 12:09:07 PM. An electric current is defined as free flow of electrons and the motivating force behind that free flow of electrons is called Voltage. Voltage is the measurement of potential energy that would move the electrons between two points. Voltage is the push that the electrons require to move within a circuit. Voltage is measured by Volt and Current is measured by Ampere.
By Sasha Sara. Motor. Published at Wednesday, December 20th 2017, 11:19:57 AM. What if you don’t have drawings? What if the customer (the production department if you’re in maintenance) just wants a motor installed and the wiring is up to you? Your first task is to identify how many leads the motor has.
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