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v - UD Physics
v - UD Physics

... Low-pass filters (LP) ...
Diode Lasers, Single-mode 50 to 200 mW, 830/852 nm
Diode Lasers, Single-mode 50 to 200 mW, 830/852 nm

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... The attack time is much faster than the decay, which is desirable in most applications. Figure 10 shows the compressor attack envelope for a +12dB step in input level. The initial output level of 1 unit instantaneously rises to 4 units, and then starts to fall towards its final value of 2 units. The ...
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NCP333 - Ultra-Small Controlled Load Switch with Auto Discharge
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Voltage source

... circuit). Such a theoretical device would have a zero ohm output impedance in series with the source. A real-world voltage source has a very low, but non-zero output impedance: often much less than 1 ohm. Conversely, a current source provides a constant current, as long as the load connected to the ...
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CMOS Schmitt Trigger Test Circuit

... input voltage until the output state changes. The input voltage that results in the output changing state is the high threshold voltage VTH. In a similar manner, the low threshold voltage VTL is determined by reducing the input voltage until a state change occurs at the output. This method is widely ...
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op-amp parameters

... a measure of an op-amp's ability to reject common-mode signals. An infinite value of CMRR means that the output is zero when the same signal is applied to both inputs (common-mode), An infinite CMRR is never achieved in practice, but a good op-amp does have a very high value of CMRR. Common-mode sig ...
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TRANSISTOR SWITCHING - University of Michigan
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... collector resistor. There is no current drawn from the capacitor, and so no further decrease in collector voltage. This is the steady-state condition that persists until the base voltage pulse level changes. The transistor may or may not be saturated in steady state; this depends on the circuit elem ...
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... Volume 4, Issue 4, July-August, 2013, pp. 240-247 © IAEME: www.iaeme.com/ijecet.asp Journal Impact Factor (2013): 5.8896 (Calculated by GISI) ...
24V, 3.3VOUT, High Current Synchronous Buck Converter With LDO
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... very compact solution to achieve 8A continuous output current and 10A peak output current over a wide input supply range with excellent load and line regulation. The NB677 operates at high efficiency over a wide output current load range. Constant-On-Time (COT) control mode provides fast transient r ...
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... Due to ever decreasing cost, variable speed drives are becoming more popular for energy conservation and the reduction in inrush currents. The type of drive that is becoming more popular today employs a voltage-source, pulse width modulated (VS-PWM) inverter, since it tends to be more economical tha ...
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Rectifier



A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves, copper and selenium oxide rectifiers, semiconductor diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches. Historically, even synchronous electromechanical switches and motors have been used. Early radio receivers, called crystal radios, used a ""cat's whisker"" of fine wire pressing on a crystal of galena (lead sulfide) to serve as a point-contact rectifier or ""crystal detector"".Rectifiers have many uses, but are often found serving as components of DC power supplies and high-voltage direct current power transmission systems. Rectification may serve in roles other than to generate direct current for use as a source of power. As noted, detectors of radio signals serve as rectifiers. In gas heating systems flame rectification is used to detect presence of a flame.Because of the alternating nature of the input AC sine wave, the process of rectification alone produces a DC current that, though unidirectional, consists of pulses of current. Many applications of rectifiers, such as power supplies for radio, television and computer equipment, require a steady constant DC current (as would be produced by a battery). In these applications the output of the rectifier is smoothed by an electronic filter (usually a capacitor) to produce a steady current.More complex circuitry that performs the opposite function, converting DC to AC, is called an inverter.
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