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Midterm 1 - University of California, Berkeley
Midterm 1 - University of California, Berkeley

Engineering Standards for Power Design Specifications
Engineering Standards for Power Design Specifications

Repeating circuit interrupter and battery charging circuit used
Repeating circuit interrupter and battery charging circuit used

... remote protective devices such as reclosers and repeating The power supply unit 11 includes a battery 12 and a circuit interrupters from an auxiliary power source rather charging circuit 13 which couples battery 12 to distribu than directly from the line itself. In this manner, ener tion line 14 for ...
2009 HOMEBREW CHALLENGE50 WATT AMPLIFIER ENTRY
2009 HOMEBREW CHALLENGE50 WATT AMPLIFIER ENTRY

... amplifier is looking into a relatively low impedance at all times). Since transformer T2 has a singleturn primary, the available ratios are integer ratios only. The closest integer ratio is 1:3 which provides a 1:9 impedance step-up, (or 9:1 impedance step-down the other way, from output to input). ...
The Kussmaul Times
The Kussmaul Times

... application that has no parasitic loads. Parasitic loads are those accessories such as radios, medical equipment, air compressors, lighting, computers or any devices in a vehicle which require constant electrical power. When a battery is being charged these devices are a load on the charger and will ...
MAX9180 400Mbps, Low-Jitter, Low-Noise LVDS Repeater in an SC70 Package General Description
MAX9180 400Mbps, Low-Jitter, Low-Noise LVDS Repeater in an SC70 Package General Description

... intended for point-to-point communication over a controlled-impedance medium, as defined by the ANSI/ TIA/EIA-644 and IEEE 1596.3 standards. The LVDS standard uses a lower voltage swing than other common communication standards, achieving higher data rates with reduced power consumption while reduci ...
Keysight E363xA Series Programmable DC Power Supplies
Keysight E363xA Series Programmable DC Power Supplies

Homework 2
Homework 2

... 8. E = 18V. R1 = 9 MΩ. R2 = 1 MΩ. A student uses a voltage divider in hopes of converting 18 V to 2 V, using the circuit shown. When the student connects a cheap volt-ohm meter (VOM) to Vout, she gets just 1.75 V. Explain why the voltage is lower than expected. Note: This problem has nothing to do w ...
Unijunction Transistor Symbol and Construction
Unijunction Transistor Symbol and Construction

... doping level as well as the physical dimensions of the N-type silicon channel but can be represented by RBB. If measured with an ohmmeter, this static resistance would typically measure somewhere between about 4kΩ and 10kΩ’s for most common UJT’s such as the 2N1671, 2N2646 or the 2N2647. These two s ...
Final Presentation - High Speed Digital Systems Lab
Final Presentation - High Speed Digital Systems Lab

MAX1556/MAX1556A/MAX1557 16µA I , 1.2A PWM Step-Down DC-DC Converters
MAX1556/MAX1556A/MAX1557 16µA I , 1.2A PWM Step-Down DC-DC Converters

... This is sometimes called voltage positioning. The load line used to achieve this behavior is shown in Figures 4 and 5. There is minimal overshoot when the load is removed and minimal voltage drop during a transition from light load to full load. Additionally, the MAX1556, MAX1556A, and MAX1557 use a ...
ZXLD1360Q Description Pin Assignments Features Typical
ZXLD1360Q Description Pin Assignments Features Typical

... When input voltage VIN is first applied, the initial current in L1 and RS is zero and there is no output from the current sense circuit. Under this condition, the (-) input to the comparator is at ground and its output is high. This turns MN on and switches the LX pin low, causing current to flow fr ...
XPIQ Quad Intelligent Audio Transponder
XPIQ Quad Intelligent Audio Transponder

PWM5032 RadHard High Speed PWM Controller (3/15)
PWM5032 RadHard High Speed PWM Controller (3/15)

... Dual push-pull outputs OutA and OutB are provided for driving off chip switches. The output stages are identical: u u u u u ...
PDF
PDF

UCC2961 数据资料 dataSheet 下载
UCC2961 数据资料 dataSheet 下载

... The UCC3961 advanced primary-side startup controller is a unique solution that provides all the primary-side functions required for a single-ended, isolated, switch-mode power converter incorporating secondary-side PWM control. It is usable with a wide range of secondary control circuits and is espe ...
AH5792  SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER
AH5792 SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER

... blocked. ...
OPTICS LAB TUTORIAL: Oscilloscope and Spectrum Analyzer M.P. Hasselbeck
OPTICS LAB TUTORIAL: Oscilloscope and Spectrum Analyzer M.P. Hasselbeck

... ANSWER: Signal level (voltage) will drop enormously at 50 Ω unless source can provide enough current ...
TEXAS INSTRUMENTS (DRV134PA) AUDIO LINE DRIVER
TEXAS INSTRUMENTS (DRV134PA) AUDIO LINE DRIVER

HMC431LP4 数据资料DataSheet下载
HMC431LP4 数据资料DataSheet下载

... VCO’s phase noise performance is excellent over temperature, shock, vibration and process due to the oscillator’s monolithic structure. Power output is 2 dBm typical from a 3V supply voltage. The voltage ...
Application Features
Application Features

... • 1604 has natural convection/conduction cooling that eliminates the need for a fan. 1608 has forced air cooling with temperature regulation for long fan life. • Thermal protection prevents damage from over temperature conditions. • Input & output protected by fuse. • Output current is limited so as ...
EUP8092  1.5A Linear Li-Ion/Polymer Charger IC with Integrated FET and Charger Timer
EUP8092 1.5A Linear Li-Ion/Polymer Charger IC with Integrated FET and Charger Timer

... charge process. A high-level signal on this pin enables the charge and a low-level signal disables the charge and places the device in a low-power mode. A low-to-high transition on this pin also resets all timers and timer fault conditions. Input and Output Capacitor Selection Typically any type of ...
Application Note
Application Note

... the designers: the cost, reliability, ruggedness, and ease to be driven must always be kept in mind. This is especially important in lighting circuits where the designer has to optimize the operating life of the fluorescent lamps by using the right starter switch. In the large family of electronic s ...
Heater / Filament Supplies
Heater / Filament Supplies

... cost. The regulator must always be fixed to a suitable heat sink. The simplest and most popular range of fixed-voltage regulators is the 78xx series. A 5V regulator can have its output raised to ~6.3V by elevating its ground terminal by 1.3V; the voltage drop across a pair of silicon diodes is almos ...
MM Installation Sheet
MM Installation Sheet

... Single Transformer: When using only one transformer, it is very important to center the transformer on the wattage load. If the project calls for 135 watts in both front and back yard, the PX-300 or PX-600 should be centered on the side of the house that will receive the most lighting. A common mist ...
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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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