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iii. comparison results
iii. comparison results

... applications [1]–[3]. In fact, in some sensor applications, the signal (current or voltage) to be measured is very small in amplitude and is sometimes lower than noise level. Hence, a normal linear filtering method [1] cannot be employed. In such cases, LIAs (analog or digital) can be used. Earlier ...
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... The balanced input requires a balanced pre-amp source. Balanced systems provide noise rejection from external electrical interference, so cable length can be very long ( 50m or longer ). The single ended or unbalanced input is provided for pre-amps without balanced output. Single-ended cables should ...
October, 1987 P/N 21-6100 DUAL SHOWMAN TOP AMPLIFIER P/N
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... 1N4448. the result of this mix-up causes the channel switching feature to malfunction after 15 minutes or so od operation from a cold state. On the Deluxe 85, CR21 through CR26 must be 1N4448 diodes. Channel switching on the Deluxe 85 may be further improved by changing a zener diode and two resist ...
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... Night Light Circuit Create a permanent night light circuit. Once you have tested all components to ensure that they are working properly, solder them to a permanent board as shown by your instructor. ...
6.2.6 Transistors
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... Night Light Circuit Create a permanent night light circuit. Once you have tested all components to ensure that they are working properly, solder them to a permanent board as shown by your instructor. ...
Transistors - Eisenhower
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Amplifier



An amplifier, electronic amplifier or (informally) amp is an electronic device that increases the power of a signal.It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In this sense, an amplifier modulates the output of the power supply to make the output signal stronger than the input signal. An amplifier is effectively the opposite of an attenuator: while an amplifier provides gain, an attenuator provides loss.An amplifier can either be a separate piece of equipment or an electrical circuit within another device. The ability to amplify is fundamental to modern electronics, and amplifiers are extremely widely used in almost all electronic equipment. The types of amplifiers can be categorized in different ways. One is by the frequency of the electronic signal being amplified; audio amplifiers amplify signals in the audio (sound) range of less than 20 kHz, RF amplifiers amplify frequencies in the radio frequency range between 20 kHz and 300 GHz. Another is which quantity, voltage or current is being amplified; amplifiers can be divided into voltage amplifiers, current amplifiers, transconductance amplifiers, and transresistance amplifiers. A further distinction is whether the output is a linear or nonlinear representation of the input. Amplifiers can also be categorized by their physical placement in the signal chain.The first practical electronic device that amplified was the Audion (triode) vacuum tube, invented in 1906 by Lee De Forest, which led to the first amplifiers. The terms ""amplifier"" and ""amplification"" (from the Latin amplificare, 'to enlarge or expand') were first used for this new capability around 1915 when triodes became widespread. For the next 50 years, vacuum tubes were the only devices that could amplify. All amplifiers used them until the 1960s, when transistors appeared. Most amplifiers today use transistors, though tube amplifiers are still produced.
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