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LM567/LM567C Tone Decoder (Rev. E)
LM567/LM567C Tone Decoder (Rev. E)

... The LM567 tone decoder is a device capable of detecting if an input signal is inside a selectable range of detection. The device has an open collector transistor output, so an external resistor is required to achieve proper logic levels. When the input signal is inside the detection band, the device ...
Circuit Symbols of Electronic Components
Circuit Symbols of Electronic Components

... Supplies electrical energy. The larger terminal (on the left) is positive (+). A single cell is often called a battery, but strictly a battery is two or more cells joined together. ...
FOUR-WIRE RTD CURRENT-LOOP TRANSMITTER: Four
FOUR-WIRE RTD CURRENT-LOOP TRANSMITTER: Four

A DC27-2 Maxstar 150 STH.qxd
A DC27-2 Maxstar 150 STH.qxd

tl7705 - supply voltage supervisors
tl7705 - supply voltage supervisors

... † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to ...
Choosing the Right Stator Bar for Your Next Rewind
Choosing the Right Stator Bar for Your Next Rewind

... weaker area in the coil design and winding failures are often due to a surge and failure of the turn insulation. The choice of a multiturn coil or single turn bar is often dictated by the owner, perhaps based on previous bad experience, such as an untimely failure. Although rewinds can include a new ...
ST7540 FSK powerline transceiver design guide for AMR
ST7540 FSK powerline transceiver design guide for AMR

... Application note ST7540 FSK powerline transceiver design guide for AMR Introduction The ST7540 reference design has been developed as a useful tool to demonstrate how a small, high-performance powerline node can be built using the ST7540 FSK transceiver. With this reference design, it is possible to ...
Aalborg Universitet
Aalborg Universitet

liquid crystal display module
liquid crystal display module

... into the respective AC voltage output. The AC voltage controls the amount of light released through the panel. Through the R-G-B subpixels, the color and brightness of each pixel is controlled by this mechanism. The relationship between the emitted light intensity versus the applied voltage is non-l ...
L6717A - STMicroelectronics
L6717A - STMicroelectronics

Arc flash hazards
Arc flash hazards

... 1. Compression phase: the volume of the air where the arc develops is overheated due to the release of energy. The remaining volume of air inside the cubicle heats up from convection and radiation. Initially there are different temperatures and pressures from one zone to another; 2. Expansion phase: ...
Ü ÿ Ÿ - Tascam
Ü ÿ Ÿ - Tascam

... This switch should be used in conjunction with the “reference level” settings on various pieces of TASCAM equipment. When an analog signal is at its nominal level (i.e. the meter reads “0 dB”), the signal level on digital equipment must not read 0 dB—this would mean that any signals above 0 dB (anal ...
ProduCT sPeCifiCATions
ProduCT sPeCifiCATions

... ² Minimum Circuit Ampacity (MCA) ratings conform to the National Electric Code; however, local codes should apply. ³ Minimum voltage on 230/208-volt models is 197 volts; maximum is 253 volts. Minimum voltage on 265-volt models is 239 volts; maximum is 292 volts. ⁴ Overcurrent protection for all u ...
Attachment 4
Attachment 4

... Change to scope to include definition of Medium Voltage. For the use of this document High Voltage (ref IEV 601 -01-27) is the rated voltage above 1000V. However the term Medium Voltage (ref IEV 601-01-28) is commonly used for distribution systems, with voltages above 1kV and generally applied up to ...
RF Filtering for Audio Amplifier Circuits
RF Filtering for Audio Amplifier Circuits

... 1. Using one bypass component versus two or more resistive devices resulting in reduced component count on a PCB. 2. Better balance between power and return lines to ground: capacitance tolerance between the internal line to ground capacitors is typically 13% or less. This means matched suppression ...
SECTION 4 ELECTRIC MOTORS UNIT 20 TROUBLESHOOTING
SECTION 4 ELECTRIC MOTORS UNIT 20 TROUBLESHOOTING

... After studying this unit, the reader should be able to ...
PROJECT REPORT SHEET
PROJECT REPORT SHEET

... completion of calls. This reduces the amount of supervision required, and allows a single operator to handle many more lines than is possible in a local-battery system. (5) Finally, because the single storage battery is located at the telephone central office, inspectors are not required to make per ...
Pulsing a Laser Diode
Pulsing a Laser Diode

... If a voltage source is used to pulse the diode, empirical measurements will be required to determine the diode current. These measurements will need to be repeated for different types of diodes or if a large variation in dynamic impedance is expected. Voltage pulsing also has the disadvantage of a l ...
AE User Port (based on C3): Pin Descriptions
AE User Port (based on C3): Pin Descriptions

Analysis of Envelope Signal Injection for Improvement of RF Amplifier Intermodulation Distortion
Analysis of Envelope Signal Injection for Improvement of RF Amplifier Intermodulation Distortion

... A WCDMA RF amplifier incorporating the envelope detection circuit of Fig. 2 has been fabricated in a 0.25 m SiGe BiCMOS process [9]. The chip (single-ended) measures 1.75 0.7 mm (including pads) as shown in Fig. 10. The amplifier has 16.5 dB gain with 4.5 mA (with 2.7-V supply) quiescent current con ...
PDF
PDF

Wind Power and New Mexico 4-H
Wind Power and New Mexico 4-H

Practice Work #1
Practice Work #1

... understand that the voltage dropped across a current-conducting diode does change with the amount of current going through it, but that this change is fairly small over a wide range of currents. This is why many textbooks simply say the voltage drop across a conducting, semiconductor diode remains c ...
MAX9173 Quad LVDS Line Receiver with Flow-Through Pinout and “In-Path” Fail-Safe General Description
MAX9173 Quad LVDS Line Receiver with Flow-Through Pinout and “In-Path” Fail-Safe General Description

Lighting Circuit Power Reducers - Lighting Research Center
Lighting Circuit Power Reducers - Lighting Research Center

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Alternating current



Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.AC is the form in which electric power is delivered to businesses and residences. The usual waveform of alternating current in most electric power circuits is a sine wave. In certain applications, different waveforms are used, such as triangular or square waves. Audio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information encoded (or modulated) onto the AC signal, such as sound (audio) or images (video).
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