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Microcontroller Based Numerical Mho Distance Relay
Microcontroller Based Numerical Mho Distance Relay

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SIGMA S6000 IO/P Module User’s Manual

AD7294 12-Bit Monitor and Control System with Multichannel
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... in cellular base station applications. In these types of applications, the DACs provide 12-bit resolution to control the bias currents of the power transistors. Thermal diode-based temperature sensors are incorporated to compensate for temperature effects. The ADC monitors the high-side current and ...
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LM3429 LM3429-Q1 N-Channel Controller for Constant Current

... LED loads. The high-side differential current sense, with low adjustable threshold voltage, provides an excellent method for regulating output current while maintaining high system efficiency. The LM3429 uses a Predictive Offtime (PRO) control architecture that allows the regulator to be operated us ...
Influence of the source impedance on the breakdown behaviour of
Influence of the source impedance on the breakdown behaviour of

No Slide Title
No Slide Title

E f
E f

... Application of Synchronous Motors Synchronous motors are usually used in large sizes because in small sizes they are costlier as compared with induction machines. The principal advantages of using synchronous machine are as follows: ...
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mosfet/igbt drivers theory and applications

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... about 1.2385V at zero Kelvin, but tracing out the complete theoretical characteristics of actual transistors would find they meet at a slightly lower voltage. The curvature of Vbe is difficult to see in the figure, unless you look closely to see the departure from the linearity of the extrapolation ...
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DeltaV SIS™ Conditioning Components

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WM8731 Portable Internet Audio CODEC with Headphone Driver and Programmable Sample Rates DESCRIPTION

... provided, along with a mute function, programmable line level volume control and a bias voltage output suitable for an electret type microphone. Stereo 24-bit multi-bit sigma delta ADCs and DACs are used with oversampling digital interpolation and decimation filters. Digital audio input word lengths ...
Paper Title (use style: paper title)
Paper Title (use style: paper title)

... decoupling analysis has been a source of confusion and controversy for many years. The effect of local decoupling capacitors, their distance from their respective ICs, and the value of these decoupling capacitors are often debated by engineers in industry and academia. In this paper, will be discuss ...
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Paper Title (use style: paper title)
Paper Title (use style: paper title)

Stray Voltage Test Procedure for Electrical Contractors
Stray Voltage Test Procedure for Electrical Contractors

... through these connections to earth that generates NEV and stray voltage. For safety reasons, any metal structure in a building, water lines and case grounds on electrical equipment, are all bonded back to the neutral of the system at the service entrance panel. As a result of these bonds, the metal ...
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On Applying Controlled Switching to Transmission Lines

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SCR`s and Triac Tutorial

... Q1's base is shorted to the cathode terminal via R1 and R2, Q1 is cut off through lack of base current. Therefore Q1 feeds no base current to Q2, so it is also cut off. Because both transistors are cut off, only a small amount of leakage current can flow between the anode and cathode terminals. The ...
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Electronic Devices and Circuit Theory

Chapter Title
Chapter Title

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Adaptive Systems in Digital Communication Designs

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HRTF Measurements and Filter Design for a Headphone

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High Side Switch Shield

< 1 ... 60 61 62 63 64 65 66 67 68 ... 696 >

Valve RF amplifier



A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.), is a device for electrically amplifying the power of an electrical radio frequency signal.Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of transmitters, transmitter output stages switching to transistors somewhat later. Specially constructed valves are still in use for very high power transmitters, although rarely in new designs.
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