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2001 Power Plus Revs
2001 Power Plus Revs

... As a result, more advanced control strategies can be employed than with phase-controlled SCRs. For example, PowerPlus allows faster, more precise control of voltage recovery following an arc, and intermittent energization timing is not tied to the line frequency and modulation of the output voltage. ...
the ux-171-a class ab1 push pull power amplifier
the ux-171-a class ab1 push pull power amplifier

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... General Description ...
Ultralow IQ, 50mA LDO Linear Regulators w/Power
Ultralow IQ, 50mA LDO Linear Regulators w/Power

... temperature of +85°C; restrict the maximum junction temperature to +85°C under normal operating conditions. This restriction limits the power dissipation the regulator can handle in any given application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable ...
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MAX16977 Evaluation Kit Evaluates: MAX16977 General Description Features

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Automatic Acoustic Guitar Tuner
Automatic Acoustic Guitar Tuner

... maintain the motor working at higher torque requirements. A different operational amplifier that can and may be used is the LT1210 from Linear Technologies. The output current for this latter operational amplifier is rated at 1.1LAwhich increases the current five-fold. ...
High Voltage Gain Interleaved Boost Converter
High Voltage Gain Interleaved Boost Converter

ICS552-02 L S 2 I
ICS552-02 L S 2 I

... While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patent ...
Synthesis of Double-Input DC-DC Converters using
Synthesis of Double-Input DC-DC Converters using

... Figs. 3, 4, and 5 show the circuit diagram of the new double-input converters using an SPTT switch. These new converters are named double-input buck, doubleinput buckboost, and double-input buckboost-buck, respectively. It is worth mentioning that only one inductor is used in the structure of these ...
Shure M63 User Guide
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... When the METER SENSITIVITY switch (on rear panel) is on the 0 VU = 8 dBm FIXED position, an output of 8 dBm on the 600-ohm line output (loaded with 600 ohms), reads 0 VU on the meter. When the METER SENSITIVITY switch is in the 0 VU VARIABLE position and the 0 VU LEVEL ADJUST control is maximum (ful ...
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Analog Devices Welcomes Hittite Microwave Corporation

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A 93% efficient LED driver solution for the US market
A 93% efficient LED driver solution for the US market

... powers U2, and C8 which powers U1. R2 and C9 form a filter to remove ringing spikes due to leakage inductance. The auxiliary (lower) winding on L1 has a turns ratio that puts about 15 V on C9 with the AC line applied. The voltage on C9 is proportional to the LED voltage. This will limit the number o ...
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NCP3127 - PWM Switching Converter

Manual MultiPlus Compact 12 | 2000 | 80-50 120V
Manual MultiPlus Compact 12 | 2000 | 80-50 120V

... Beside these primary functions, however, the MultiPlus Compact has several advanced features that provide a range of new applications as outlined below. Uninterrupted AC power In the event of a grid failure, or shore or generator power being disconnected, the inverter within the Multi Compact is aut ...
CANTILEVERS WITH PIEZOELECTRIC THIN FILMS FOR WEAKLY VIBRATING ENVIRONMENT
CANTILEVERS WITH PIEZOELECTRIC THIN FILMS FOR WEAKLY VIBRATING ENVIRONMENT

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(ii) Three-phase transformer

... shell type transformer may have simple rectangular form as shown in above fig, or it may have a distributed form. (B) On the basis of their purpose 1. Step up transformer: Voltage increases (with subsequent decrease in current) at secondary. 2. Step down transformer: Voltage decreases (with subseque ...
SPS2 Circuit Breaker (15kV-245kV)
SPS2 Circuit Breaker (15kV-245kV)

... parts of the contact assembly from the housing. The connection to the high voltage is via a SF6 outdoor bushing. The current transformers are mounted directly on the bushing, which eliminates the fastening devices and cabling required in the case of exterior mounting. Dead-tank circuit breakers offe ...
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Induced Polarisation (IP)

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SEMICONDUCTOR ELECTRONICS notes

... When an electron makes a transition from conduction band to valance band photons with energy equal to or slightly less than the band gap are emitted. As the forward current increases, intensity of light increases and reaches a maximum. The V-I characteristics of a LED is similar to that of a Si junc ...
LM124/224/324/324A/ SA534/LM2902 Low power quad
LM124/224/324/324A/ SA534/LM2902 Low power quad

... 1. VO ≈ 1.4 VDC, RS = 0 Ω with VCC from 5 V to 30 V and over full input common-mode range (0 VDC+ to VCC –1.5 V). 2. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exist ...
Design and Implementation of a Stand-Alone Remote Terminal Unit Prachi Sharma
Design and Implementation of a Stand-Alone Remote Terminal Unit Prachi Sharma

... Potential transformers (PT) (also called voltage transformers (VT) are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected meter ...
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... Note: Exposure to absolute maximum rating conditions for extended periods may affect reliability. ...
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ELECTRONIC CONTROL SYSTEMS

... These control instruments series “S” are among the most modern and complete available today on the market. They have been built to command membrane solenoids on dust removal filters. A large back lighted liquid crystal display clearly shows cleaning system status. It has a fast-flow setting menu wit ...
Precor Error Codes
Precor Error Codes

... 5. Even though unlikely, the A.C. line frequency could actually be out of acceptable limits. This is more likely to occur in countries where A.C. power systems may not be well developed and controlled. There may be little that can be done about this condition. If the source frequency can not be corr ...
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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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