By Valentine Sybille. Circuit. Publised at Saturday, December 23rd 2017, 04:38:48 AM. 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 Madeleine Catherine. Diagram. Publised at Saturday, December 23rd 2017, 20:46:14 PM. Circuit components are manufactured with exposed metal pins (or leads) that are used to fasten them to the PCB both mechanically (so they will not fall off) and electrically (so current can pass between them). The soldering process, which provides a strong mechanical bond and a very good electrical connection, is used to fasten components to the PCB. During soldering, component leads are inserted through the holes in the PCB, and then the component leads and the through-hole plating metal are heated to above the melting point of the solder (about 500 to 700 degrees F). Solder (a metallic compound) is then melted and allowed to flow in and around the component lead and pad. The solder quickly cools to form a strong bond between the component and the PCB. The process of associating components with reference designators, loading them into their respective holes, and then soldering them in place comprises the PCB assembly process.
By Charlotte Myriam. Diode. Published at Tuesday, December 26th 2017, 14:27:42 PM. Diode behavior is analogous to the behavior of a hydraulic device called a check valve. A check valve allows fluid flow through it in only one direction.
By Jessica Mireille. Diagram. Published at Tuesday, December 26th 2017, 14:23:35 PM. In addition to reading this instructable it may be a good idea for you to read my other instructable "electronics components and what they do" to get a good understanding of what you are doing when building a project.
By Alix Loane. Diagram. Published at Tuesday, December 26th 2017, 13:58:36 PM. There are drawing programs, and there are schematic capture programs. All schematic capture programs will produce output for inclusion in publications. However, these programs have different goals, and it shows. Rarely is the output of a schematic capture program really suitable for publication; often it is not even readable, or cannot be scaled. Engineers who really want to have a useful schematic drawing of a circuit usually redraw the circuit in a general drawing program, which can be both tedious and prone to introducing new errors.
By Alix Loane. Circuit. Published at Tuesday, December 26th 2017, 13:48:36 PM. When multiple components are connected in series, each component must carry the same current. When multiple components are connected in parallel, the total current is the sum of the currents flowing through each individual component. These statements are generalized as Kirchoff’s Current Law (KCL), which states that the sum of currents entering and exiting a node must be zero.
By Jessica Mireille. Diode. Published at Tuesday, December 26th 2017, 13:27:35 PM. Semiconductor diodes can be designed to produce direct current (DC) when visible light, infrared transmission (IR), or ultraviolet (UV) energy strikes them. These diodes are known as photovoltaic cells and are the basis for solar electric energy systems and photosensors. Yet another form of diode, commonly used in electronic and computer equipment, emits visible light or IR energy when current passes through it. Such a device is the familiar light-emitting diode (LED).
By Lydie Honorine. Power. Published at Tuesday, December 26th 2017, 13:24:59 PM. A rise in die temperature (regardless of cause) approaching the limit threshold (about 160°C) will cause the thermal shutdown to cut drive to the power transistor, thereby reducing load current and internal power dissipation. Note that the thermal limiter can override both the current limit circuits and the voltage error amplifier. Thermal shutdown is detailed in the next section.
By Madeleine Catherine. Amplifier. Published at Tuesday, December 26th 2017, 13:03:24 PM. As I mentioned earlier there is a third "ground" the case or chassis. Here there can be two distinct issues. As part of many electrical codes all exposed metal parts of AC mains electrically powered equipment must be either connected to the "earth" ground or doubly insulated from any electrical connections. This is to protect the user in case there is an internal failure. Any potentially dangerous voltages will be "grounded" to the earth. So I use three wire connections all the time. The "earth" ground from the AC mains is directly connected to the chassis at the entry point. As a note of interest I also use the standard IEC connectors that are found on nearly all personal computers to connect to the AC mains. This makes it easy to move equipment around and you do not have the AC cord permanently affixed to the equipment. In addition to protecting the user from shock hazards, the case now acts as an EMI shield. Any external EMI is diverted to the earth ground via the power cord.
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