By Sasha Sara. Power. Publised at Monday, December 18th 2017, 20:48:32 PM. The operation of the control loop in a typical linear regulator will be detailed using the simplified schematic diagram in Figure 2 (the function of the control loop is similar in all of the linear regulator types).
By Sasha Sara. Diagram. Published at Tuesday, July 25th 2017, 11:46:43 AM. A capacitor is a two-terminal device that can store electric energy in the form of charged particles. You can think of a capacitor as a reservoir of charge that takes time to fill or empty. The voltage across a capacitor is proportional to the amount of charge it is storing – the more charge added to a capacitor of a given size, the larger the voltage across the capacitor. It is not possible to instantaneously move charge to or from a capacitor, so it is not possible to instantaneously change the voltage across a capacitor. It is this property that makes capacitors useful on Digilent boards and in many other applications.
By Cyrielle Marjolaine. Diode. Published at Saturday, July 22nd 2017, 10:45:28 AM. A simplified planar silicon diode is illustrated in Fig. 2.0.3. Using this process for silicon diodes produces two differently doped layers of silicon, which form a ‘PN junction’. Undoped or ‘intrinsic’ silicon has a lattice structure of atoms, each having four valence electrons, but P type silicon and N type silicon are doped by adding a relatively very small amount of material having either an atomic structure with three valence electrons (e.g. Boron or Aluminium) to make P type, or five valence electrons (e.g. Arsenic or Phosphorus) to make N type silicon. These doped versions of silicon are known as ‘extrinsic’ silicon. The P type silicon now has a shortage of valence electrons in its structure, which can also be considered to be a surplus of ‘holes’ or positive charge carriers, whereas the N type layer is doped with atoms having five electrons in its valence shell and therefore has a surplus of electrons which are negative charge carriers.
By Sasha Sara. Diagram. Published at Thursday, July 20th 2017, 10:43:41 AM. A digital circuit requires a power supply to provide a constant and stable source of electric power to all devices. As discussed above, electric power is derived from the basic electrical forces that charged particles (e.g., protons and electrons) exert on one another – namely, electrons are repelled by other electrons, and attracted to more electrically positive areas where there are relatively fewer electrons. The vast majority of charged particles are found in ordinary matter bound in electrically neutral atomic structures (that is, most particles are found in structures that have an equal number of positive and negative particles). Some electrically neutral conducting materials (like metals) contain electrons that are not so tightly bound to their host atoms. If a voltage source is applied to these materials, the lightly bound electrons will move away from the concentrated source of electrons on the negative side of the supply towards the electrically positive side of the supply. A “power supply” in a digital circuit provides a local, contained imbalance of electrons that provides a voltage source that can do useful work, such as transmitting information through a conductor from one device to another. A digital circuit allows a controlled flow of electrons from of the negative to positive side of the power supply, but only via the paths designed into the circuit. As electrons flow to and from the devices in a given circuit, they can change device properties in useful ways.
By Cyrielle Marjolaine. Power. Published at Tuesday, July 18th 2017, 09:13:33 AM. The linear regulator is the basic building block of nearly every power supply used in electronics. The IC linear regulator is so easy to use that it is virtually foolproof, and so inexpensive that it is usually one of the cheapest components in an electronic assembly.
By Cyrielle Marjolaine. Diagram. Published at Thursday, July 13th 2017, 08:59:25 AM. Most of the electrical symbols can be changed in their appearance, styles and colors according to users requirements. Electrical symbols are used to represent various electrical and electronic devices in a schematic diagram of an electrical or electronic circuit.
By Valentine Sybille. Circuit. Published at Monday, July 10th 2017, 06:11:26 AM. Since single-layer/single-sided PCBs only have their various circuits and electrical components soldered onto one side, they are easy to design and manufacture. This popularity means that they can be purchased at a low-cost, especially for high-volume orders. The low-cost, high volume model means they are commonly used for a variety of applications, including calculators, cameras, radio and stereo equipment, solid state drives, printers and power supplies.
By Sasha Sara. Power. Published at Friday, July 07th 2017, 05:33:01 AM. Line regulation refers to the ability of the voltage regulator to reject variations in the applied voltage (often referred to as the line voltage because it is usually derived from the AC power line) and is expressed as a percentage. Ideally, the line regulation would be zero percent meaning that the output voltage is perfectly independent of the line voltage. The equation for line regulation is as follows. Note that line voltage can also mean the DC input voltage for some applications. Line regulation always refers to whatever the input of interest is. Line regulation is expressed in percent and the ideal value is zero meaning that the output voltage is completely independent of the input voltage.
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