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DESDALC5LP ADVAN CE IN F O RM ATIO N ADVANCED
DESDALC5LP ADVAN CE IN F O RM ATIO N ADVANCED

... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
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Influence of the Snubbers and Matching Transformer on an Optimal

HEF4047B monostable.pdf
HEF4047B monostable.pdf

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... Many operational modes are possible. For example, low-pass filters of up to three poles may be implemented, to reduce the output noise at low input currents. The buffer may also serve as a comparator, with or without hysteresis, using the 2 V reference, for example, in alarm applications. The increm ...
Radio Frequency Immunity Requirements
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... Terminal Equipment (TTE) having an acoustic output and two-wire TTE adjunct devices with connection port for Telephone Terminal Equipment (TTE) having an acoustic output. Acoustic output requirements are only defined for TTE having a handset normally held to the ear of the user, but guidance on exte ...
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24-DC Generators Part 2

...  Full-load voltage is higher than no-load voltage  Useful when connected to a long transmission line (to compensate for the voltage drop)  Compound generators are usually over-compound  See text for more details and comparison of generator types (Figure 5.32) ...
Robust Body Diode Characteristics of the Latest Power MOSFETs
Robust Body Diode Characteristics of the Latest Power MOSFETs

... ZVS is lost. Lm is fully shorted by a reflected load, RLOAD, at overload condition. This condition usually results in ZCS operation. The most severe drawback of ZCS operation (below resonance) is that hard switching at turn-on leads to the diode reverse-recovery stress. Furthermore, switching loss i ...
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AK1543 - Asahi Kasei Microdevices

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A Tariff for Reactive Power - Department of Electrical Engineering

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... The MAX1996A regulates the CCFL brightness in three ways: linearly controlling the lamp current, digital pulsewidth modulating (DPWM) the lamp current, or using both methods simultaneously to achieve the widest dimming range (>30:1). CCFL brightness can be controlled with either an analog voltage or ...
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... The structure of the ME1/1 HV system is based on CAEN SY1527 power supply system. Eight 28-channel A1733B modules are accommodated in one 19” «Euro-mechanics» crate. Each crate provides computer control and settings of each HV channel. Two HV crates are needed for ME1/1. These 2 crates are disposed ...
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... frequency-synthesizing PLL (consisting of a phase/ frequency detector, loop filter/amplifier, voltagecontrolled oscillator, and prescaler). This device converts 4-bit-wide, 155Mbps data to 622Mbps serial data (Figure 1). The PLL synthesizes an internal 622Mbps reference used to clock the output shif ...
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... A gate signal is produced automatically when the controller changes position. The position that triggers this gate signal is set by the variable control. An LED shows status of the signal. This Auto Gate can be used to trigger envelopes, start sequencers or change other module parameters depending o ...
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... Low: PMF [3:0]=[0000], 1 time of PLL ratio to TTL output buffer, internal pull low with avoid system MCLK over flow. High: PMF an 80kΩ resistor. [3:0]=[0100], 4 times of PLL ratio. This pin could be clock output pin also during normal operating if EN_CLK_OUT register bit is enabled. ...
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Low-Power Reference and Bipolar Input Voltage Conditioning Circuit

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Application Note No. 101

... variations in diode forward voltages VF from one stack to the next. One way to view the situation is as follows: a voltage source (e.g. a standard power supply with low output impedance) in series with a sufficiently high resistance approximates an ideal current source, e.g. the resistor helps to gi ...
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GD75232 MULTIPLE RS-232 DRIVERS AND RECEIVERS

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Pulse-width modulation



Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.
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