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AN45 - Measurement and Control Circuit Collection
AN45 - Measurement and Control Circuit Collection

... Michael and I changed the rules just a bit. We loaded up on formula, diapers, and bottles and went into the lab. The circuits in this collection represent our efforts, which stopped when he (more or less) began sleeping through the night. Most of the breadboarding occurred between feedings, with des ...
Decoupling control of the active and reactive power for a three
Decoupling control of the active and reactive power for a three

generation of power using railway track
generation of power using railway track

... travels over two parallel steel bars, called as rails. The rails support & guide the wheel of the vehicles, which are traditionally either train or trams. ...
Battery cell configuration for organic light
Battery cell configuration for organic light

LAB#1 - SIUE
LAB#1 - SIUE

... create the magnetic field, which they require. In addition, such motors also absorb real power, most of which is converted into mechanical power, while the rest is dissipated in the form of heat. The reactive power travels back and forth between the motor and the ac supply. Reactive power does no us ...
Single Serial Input PLL Frequency Synthesizer
Single Serial Input PLL Frequency Synthesizer

... Setting a PS pin to Low, the IC enters into power saving mode resultatly current sonsumption can be limited to 10µA (max.). Setting PS pin to High, power saving mode is released so that the IC works normally. In addition, the intermittent operation control circuit is included which helps smooth star ...
4-Channel Regulated Charge Pump White LED Driver
4-Channel Regulated Charge Pump White LED Driver

... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor doe ...
Appendix A A Simple Approach to the Concept of Capacitance
Appendix A A Simple Approach to the Concept of Capacitance

... Semiconductors and Doping Germanium and silicon are semiconductor materials commonly used for diodes and transistors. Both are elements of valence four; that is, in the crystalline state an atom is held by bonds formed by sharing its four valence electrons with four other atoms. At absolute zero all ...
CSS 11506 DC Power Supply Reference
CSS 11506 DC Power Supply Reference

... CSS 11506 DC Power Supply Reference The CSS 11506 enables you to install up to three power supplies to ensure maximum uptime. The CSS design requires two power supplies for operation. Installing a third power supply provides redundancy. A redundant power supply is active upon installation and power ...
Proposed Four Year B
Proposed Four Year B

... UNDERGRADUATE PROGRAMME IN ELECTRONICS ...
PAM2316 Description Pin Assignments
PAM2316 Description Pin Assignments

... For most applications, the value of the inductor will fall in the range of 0.47μH to 2μH. Its value is chosen based on the desired ripple current. Large value inductors lower ripple current and small value inductors result in higher ripple currents. Higher VIN or VOUT also increases the ripple curre ...
EE2003 Circuit Theory
EE2003 Circuit Theory

... 11.2 Maximum Average Power Transfer (2) Example 3 For the circuit shown below, find the load impedance ZL that absorbs the maximum average power. Calculate that maximum average power. ...
Effects of High Switching Frequency on Buck Regulators
Effects of High Switching Frequency on Buck Regulators

... Reduced Conversion Ratio (lower max VIN) As the load on a non-synchronous, current-mode buck converter approaches zero, the switching frequency will decrease in an irregular manner (pulse skipping) since a VIN-dependent charge must be delivered to the output during the blanking time ...
ADS901 数据资料 dataSheet 下载
ADS901 数据资料 dataSheet 下载

... supply rails, as shown in Figure 5. Two additional resistors (RT, RB) are necessary to set the correct current through the ladder. However depending on the desired full-scale swing and supply voltage different resistor values might be selected. The trade-offs, when selecting this reference circuit, ...
12. Transformers, Impedance Matching and Maximum Power Transfer
12. Transformers, Impedance Matching and Maximum Power Transfer

Go Picture These!
Go Picture These!

Dear Gerd - USC Physics
Dear Gerd - USC Physics

... ohms is so small that loading by 100 k can be totally forgotten unless you make truly precision measurements. R3 and R4 perform the same function for the applied 1 nA current except here you have the trouble that a 1 meg resistor needs 1 mV to yield 1nA, so we divide the applied voltage by 1000 (a 1 ...
Phantom Power Testing
Phantom Power Testing

Electric circuit
Electric circuit

... Two terminals where the current into one is identical to the current out of the other. Circuit A current from one terminal of a generator, through load component(s) and back into the other terminal. A circuit is, in this sense, a one-port network and is a trivial case to analyze. If there is any con ...
Mainboard D1675
Mainboard D1675

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NE555 SA555

AS1341
AS1341

... The AS1341 uses a proprietary current-limiting control scheme with operation up to 100% duty cycle. The DC-DC converter pulses as needed to maintain regulation, resulting in a variable switching frequency that increases with the load. This eliminates the high-supply currents associated with conventi ...
INTELLIGENT BLINKER
INTELLIGENT BLINKER

... The photovoltaic energy solution instead has been retained. However, as energy harvested from solar cells is intermittent and the maximum power that it can provide may be much less than the required peak power during circuit operation, a rechargeable battery is used to store the harvested energy. In ...
Series Cicuit Lab
Series Cicuit Lab

... Objectives: The purpose of this lab exercise will be to reinforce concepts learned in the classroom segment of Electricity/Electronics. These concepts include: series connected resistance is additive, voltage drop is additive, and current measurements through-out the circuit is the same. . Students ...
series circuit - Madison County Schools
series circuit - Madison County Schools

... current draw on the source goes up with each new branch. If the source cannot supply the current that is demanded by the multiple resistors of the circuit, the voltage will (must!) decrease. This could be bad, as some devices, notably motors, do not like to run at low voltage and can actually be dam ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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