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FAN6224 Synchronous Rectification Controller for Flyback and Forward Freewheeling Rectification
FAN6224 Synchronous Rectification Controller for Flyback and Forward Freewheeling Rectification

... linear-predict timing control and the operation principle is based on the volt-second balance theorem, which states: the inductor average voltage is zero during a switching period in steady state, so the charge voltage and charge time product is equal to the discharge voltage and discharge time prod ...
AP65550 Description Pin Assignments
AP65550 Description Pin Assignments

... Peak current determines the required saturation current rating, which influences the size of the inductor. Saturating the inductor decreases the converter efficiency while increasing the temperatures of the inductor and the internal MOSFETs. Hence choosing an inductor with appropriate saturation cur ...
BSPM4275TNS(R) / BSPH4275TT(R)
BSPM4275TNS(R) / BSPH4275TT(R)

... The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information th ...
Exp_Simplecircuits
Exp_Simplecircuits

Phy221 Lab 3
Phy221 Lab 3

... Devices such as hair dryers and toasters use resistance to produce heat. Others, like your computer, have a resistance that produces heat as an unwanted by product. If you have ever felt the bottom of your laptop when it is on or were annoyed by the buzz of a desktop cooling fan you have experienced ...
Generators and Transformers
Generators and Transformers

LED array reference design board
LED array reference design board

... due to the power dissipation in the drivers. A detailed explanation is described in Section 3: Reducing power dissipation on the chip. The LED cathodes are connected to ground through constant current sinks. The value of the constant current is set by only one external resistor. The DC-DC converter ...
MAX8858 Highly Efficient, All-Internal MOSFET, 6-Channel PMIC for 2AA Digital Camera Systems
MAX8858 Highly Efficient, All-Internal MOSFET, 6-Channel PMIC for 2AA Digital Camera Systems

... Thermal Shutdown ...
Wide-input dc/dc modules offer maximum design flexibility
Wide-input dc/dc modules offer maximum design flexibility

LM78S40 Switching Voltage Regulator Applications
LM78S40 Switching Voltage Regulator Applications

... limits the peak current. This provides protection for the switching transistor and power diode. The nominal activation voltage is 300 mV, and the peak current can be programmed by a single resistor RSC. A 1.3V temperature-compensated, band-gap voltage source provides a stable reference to which the ...
Current Not Voltage - Appalachian State University
Current Not Voltage - Appalachian State University

... c) Apply artificial respiration immediately. Have someone else call for help. ...
J.M. Rivas, J. Shafran, R.S. Wahby, and D.J. Perreault, “New Architectures for Radio-Frequency dc/dc Power Conversion,” 2004 IEEE Power Electronics Specialists Conference, Aachen, Germany, June 2004, pp. 4074-4084.
J.M. Rivas, J. Shafran, R.S. Wahby, and D.J. Perreault, “New Architectures for Radio-Frequency dc/dc Power Conversion,” 2004 IEEE Power Electronics Specialists Conference, Aachen, Germany, June 2004, pp. 4074-4084.

... run at or near their ideal operating points. One activation scheme that meets these requirements is illustrated in Fig. 2. In steady state, the unregulated cells deliver a portion of the total power (in discrete increments), while the regulating cell provides whatever remaining power is needed to re ...
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The Reverse Bias Requirement for PIN Diodes in High Power

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Making Sense of Current Sensing

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Download B9300 Datasheet

... A finger screw is provided for locking the dial. The same Power Reference Unit can also be connected to several load sharers where a multi engine installa- ­tion is operating in parallel with a grid supply. The output of the B9300 Power ­Reference Unit (terminals 5 and 3) is connected to the pa ...
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95% High efficiency power supply changes
95% High efficiency power supply changes

... save every mW of unnecessary dissipation. For example the input filter for the power supply shown above uses very low resistance winding wire that virtually eliminates I2R losses in the chokes. A quasi-resonant, lossless power factor correction circuit operates in a discontinuous mode. Its operating ...
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D Series - Dual-Lite
D Series - Dual-Lite

... Requires a provided external transformer for 208VAC or 240VAC input. Refer to Specifications table for available Input/Output voltage combinations. Other voltages available. Consult factory. External transformer may be provided. Loading may not exceed 50% of the system’s total rating on any 120VAC l ...
560CID11 Data Sheet
560CID11 Data Sheet

... additional algorithms for a high suppression of line frequency and line harmonics interference voltages. Even for a deviation of ±10% of the line frequency there is still given a suppression of >45 dB. The internal high resolution allows it to scan all measurement ranges with the same resolution ...
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4. Colpitts Oscillator - The Designer`s Guide Community

... voltage inject current from the active device. Historically, when transistors were expensive, the Colpitts oscillator was the topology of choice because it required only a single transistor [1]. Now that transistors are essentially free, the Colpitts oscillator remains popular because it only requir ...
Measuring Planck's Constant with LEDs
Measuring Planck's Constant with LEDs

... •In 1900, German physicist Max Planck (1858-1947) was trying to model the broad smooth spectrum of electromagnetic radiation (i.e., light) emitted by a warm body. •This “black body radiation” is what you see coming from the sun, the filament of an incandescent light bulb, or a hot electric stove el ...
AA21156163
AA21156163

... bus voltage magnitude by dynamically absorbing or generating reactive power to the ac grid network, like a thyristor static compensator. This reactive power transfer is done through the leakage reactance of the coupling transformer by using a secondary transformer voltage in phase with the primary v ...
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Buck converter



A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.
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