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RCL Worksheet Key
RCL Worksheet Key

... Problem Solving 1. A series RCL circuit has a resonant frequency of 1500 Hz. When operating at a frequency other than 1500 Hz, the circuit ha a capacitive reactance of 5 Ω and an inductive reactance of 30 Ω. What are the values of L and C? REASONING Since the resonant frequency f0 is known, we may u ...
Op Amps II
Op Amps II

... the real part of the denominator of Equation 1 vanishes when 3 x (ωτ ) = 1 . Furthermore, ...
The Filter Wizard issue 6: One giant squeak for Mankind Kendall
The Filter Wizard issue 6: One giant squeak for Mankind Kendall

... was particularly taken by the May 1969 issue because it included a design for an electronically controlled Meccano model. For fun, though, I’ve decided to look at another circuit from that issue. I never built it at the time, but would have been interested because it had an audio use, and I was alre ...
Section C5: Single-Stage BJT Amplifier Configurations
Section C5: Single-Stage BJT Amplifier Configurations

RF Multiplexing Transmitting and Receiving Unit (TA: Saurav K
RF Multiplexing Transmitting and Receiving Unit (TA: Saurav K

... to provide enough bandwidth for higher quality audio signal. Increase the number of multiplexed signals, by adding more A/D converters and changing the programmable logic controller. Utilize digital audio compression/decompression ...
mobile phone detector
mobile phone detector

IIR - WDM Next Generation Optical Networking
IIR - WDM Next Generation Optical Networking

... The photo-detector provides a voltage signal which is linearly proportional to the perpendicular position error (error offset) of the PV panel. This is implemented by putting two light sensitive resistors in an electrical bridge which is connected to a unity gain differential operational amplifier c ...
ECE490_03
ECE490_03

6 – UJT Relaxation Oscillator
6 – UJT Relaxation Oscillator

... 2. Measure the peak voltage Vp of the circuit. Connect a voltmeter across CE and observe the charging and discharging of the capacitor. The voltmeter reading will be fluctuating from a high reading to a low reading. Observe closely the movement of the meter pointer and measure the maximum voltage r ...
darlington - UniMAP Portal
darlington - UniMAP Portal

INA217 - Vnsky.com
INA217 - Vnsky.com

... extremely low levels, even in high gain. The INA217 provides near-theoretical noise performance for 200Ω source impedance. The INA217 features differential input, low noise, and low distortion that provides superior performance in professional microphone amplifier applications. The INA217 features w ...
C22 Preamplifier User Manual
C22 Preamplifier User Manual

... The circuit design is with referenced to the classical McIntosh C22 pre-amplifier. It uses three 12AX7 vacuum tubes for amplification and uses one pentode-triode vacuum tube 6F3P (6BM8) as voltage regulation. Vishay 1N5062 forming a bridge provide for fullwave rectification. The resulted ~300V DC. A ...
Slide 1
Slide 1

... Bridge Diode Capacitor ...
Electronic Music
Electronic Music

Question 1. Consider the signal below on the left. 1) Write
Question 1. Consider the signal below on the left. 1) Write

... 2) Next to the 5th sample point, write the binary number that will be assigned to that sample. Since we’re using a 3-bit quantizer and the range is -8V to +8V, we have 2^3=8 possible levels, as shown above. The fifth sample point falls in the sixth quantization level, i.e. it is assigned a value of ...
QUESTION: what happens to light intensity of lamp in a series circuit
QUESTION: what happens to light intensity of lamp in a series circuit

... what happens to light intensity of lamp in a series circuit when more lamps are added to the circuit SOLUTION: When lamps are added in a series circuit, the resistance of the circuit is R  RL  RL  RL  ...  N  RL Here N is quantity of lamps added to the circuit RL is the resistance of one lamp. ...
Quiz 3 Solutions
Quiz 3 Solutions

Analog Communication
Analog Communication

... sometimes heard by cell phone users at the edge of a cell's coverage area, or (more likely) by the landline user to whom the cell phone is connected. • "Picket fencing" refers to the way portions of speech are stripped from the conversation, as if the listener was walking by a picket fence, and hear ...
Series and Parallel Resonance 5-19-11
Series and Parallel Resonance 5-19-11

Chapter 3-Webster Amplifiers and Signal Processing
Chapter 3-Webster Amplifiers and Signal Processing

Chapter 5
Chapter 5

... Direct Coupled Amplifiers • Simple Amp with Feedback • Characteristics • Temperature Stability • Q1 heats up and IC1 increases • VC1 and VB2 decreases • VE decreases, thus VB1 decreases • Q1 then conducts less • Thus VC1 increases • End result a temperature ...
Preliminary Work
Preliminary Work

ETEE3211  Fall 2004
ETEE3211 Fall 2004

Test Equipment
Test Equipment

... circuit library includes: MOSFET & transistor amplifiers, bridges, sine wave oscillators, square wave oscillators, phase shift oscillators, current mirrors, integrators, differentiators, transistor & MOSFET monostables, LC oscillators, tuned collector amplifiers, LC tuned circuits, power supplies, a ...
LK: Transistor linear applications LK320
LK: Transistor linear applications LK320

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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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