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Voltage Shunt Feedback
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... what's left. in reality both methods are very closely related to one another. see, the problem with just raising all the coupling cap values is that the cap just determines the frequency at which the -6db/oct rolloff BEGINS. in an amp that has a nice breakup, with a nice touch sensitivity and respon ...
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... as either voltage or current, at any of the amplifier’s terminals or induced in its associated circuitry. It can appear as spikes, steps, sine waves, or random noise. Interference can come from anywhere: machinery, nearby power lines, RF transmitters or receivers, computers, or even circuitry within ...
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... Electrical energy is supplied to the oscillator by means of a square wave which is produced by a timer chip (#555) which is powered by a 5 Volt DC supply. Each transition of the square wave gives an initial amplitude to the oscillator. The period of the square wave is chosen so that there is sufficien ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to ...
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... under the logic gates. The 7408 chip is a quad 2-input AND chip. That means that it contains four AND gates. For example, 1A and 1B are the inputs for the first AND gate, and 1Y is the corresponding output. An important distinction between the gates we used above and the chips we use in this section ...
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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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