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Differential Amplifier
Differential Amplifier

VLMS-6 - Forman Vehicle Services
VLMS-6 - Forman Vehicle Services

... • Ideal for Direction Indicators and Marker Lights • 24VDC Application • EMC Approved ...
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Quiz (Energy, Safety, Resistance, and Circuits)

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What`s an Analog Signal?
What`s an Analog Signal?

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A ELEC-353 Analogue electronics
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P-type Transistor

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UNIVERSITY OF MASSACHUSETTS DARTMOUTH

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Multi-functional Packaged Antennas for Next

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SRM-007t

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ac-circuits-test-16

... 9. When an alternating voltage of 200 V - 50 Hz is applied across a device X, a current of 2 A flows through the circuit and is in phase with the applied voltage. When the same voltage is applied across another device Y, the same current flows through the circuit but it leads the applied voltage by ...
HW8
HW8

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Lecture 16

... frequency. At 10x the corner frequency, the output is about 1/10 of the input.  An LC circuit reduces the signal in proportion to the square of the frequency. At 10x corner f, the output is about 1/100 of the input.  The corner frequency for an LC circuit is ...
Geen diatitel
Geen diatitel

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Conceptual Questions Chap. 13

the original file
the original file

The Colpitts Oscillator
The Colpitts Oscillator

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Chelmsford Amateur Radio Society Advanced Course Receivers

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< 1 ... 506 507 508 509 510 511 512 513 514 ... 524 >

Regenerative circuit



The regenerative circuit (or regen) allows an electronic signal to be amplified many times by the same active device. It consists of an amplifying vacuum tube or transistor with its output connected to its input through a feedback loop, providing positive feedback. This circuit was widely used in radio receivers, called regenerative receivers, between 1915 and World War II. The regenerative receiver was invented in 1912 and patented in 1914 by American electrical engineer Edwin Armstrong when he was an undergraduate at Columbia University. Due partly to its tendency to radiate interference, by the 1930s the regenerative receiver was superseded by other receiver designs, the TRF and superheterodyne receivers and became obsolete, but regeneration (now called positive feedback) is widely used in other areas of electronics, such as in oscillators and active filters. A receiver circuit that used regeneration in a more complicated way to achieve even higher amplification, the superregenerative receiver, was invented by Armstrong in 1922. It was never widely used in general receivers, but due to its small parts count is used in a few specialized low data rate applications, such as garage door openers, wireless networking devices, walkie-talkies and toys.
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