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ECE2006 LABORATORY 9
ECE2006 LABORATORY 9

... negative peak or the x-axis crossing, either with a positive or negative slope. To measure the phase angle between two series components, the Math function must be used to used as described in “Viewing series component voltages with the oscilloscope.” The menu prompted by the ‘Measure’ button allows ...
Student Lecture #1: Operational Amplifiers
Student Lecture #1: Operational Amplifiers

... integrated circuit that sets an output voltage based on the input voltages provided. In a circuit, it is used to perform an operation and an amplification where the operation may be add, subtract, filter, integrate, differentiate, etc. Op-Amps are composed of transistors, resistors, capacitors, and ...
Chapter 4 : Resonance Circuit
Chapter 4 : Resonance Circuit

... the selectivity) Lower value of Q larger the bandwidth. (Lower the selectivity) ...
IJECIERD-Electronics-Engg
IJECIERD-Electronics-Engg

... The complete block diagram is shown in fig 2.2 and a transmitter position is shown in fig 2.1. The explanation of each block goes like this: RF TRANSMITTER: The Radio Frequency Transmitter transmits the zone code to the receiving units. There are two zones in the present system: School Zone and Hosp ...
Design Goals
Design Goals

... Stage 1 of the amplifier, shown on the left side of Figure 1, consists of a high impedance amplifier with a gain of 50. It also has a high Common Mode Rejection Ratio. This stage provides noise reduction and signal centering for the higher amplification of the second stage. The OP-90 in stage 1 is u ...
Experiment8-INTRODUCTION TO OPAMPs(differential amp.)
Experiment8-INTRODUCTION TO OPAMPs(differential amp.)

... transistor. The models can be found in the bipolar.lib library. a. Form your circuit in Fig.5 in Pspice with the given values in Table1 and using the RC and RREF values calculated at preliminary work part1. Ground the both vin1 and vin2 b. Bias simulation. Simulate the circuit. Do a BIAS simulation ...
Resistors, Currents and All That Jazz
Resistors, Currents and All That Jazz

... slight compared to that in a resistor ...
Colpitts oscillator
Colpitts oscillator

... Practical example Fig. 3 shows a working example with component values. Instead of bipolar junction transistors, other active components such as field effect transistors or vacuum tubes, capable of producing gain at the desired frequency, could be used. ...
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OHM`S LAW Experiment 10

Course Syllabus
Course Syllabus

... Catalog Description including pre- and co-requisites: supporting data required for grade prerequisite of ‘C’ or higher. This course is designed as the introductory course in linear circuit analysis normally offered to engineering students in the sophomore year. It provides an introduction to the the ...
COMPARATIVE INVESTIGATIONS OF TWO KIND OF ELECTRONIC Henryk Urzędniczok
COMPARATIVE INVESTIGATIONS OF TWO KIND OF ELECTRONIC Henryk Urzędniczok

... In each case the frequency is weakly influent by the temperature, so thermal stabilization is necessary [7]. The effect described above isn’t very inconvenient when the sensor is under laboratory investigation, e.g. for testing of the different sensitive layer materials – in this case only changes o ...
NTE823 Integrated Circuit Low Voltage Audio
NTE823 Integrated Circuit Low Voltage Audio

... With Pin1 and Pin8 open the 1.35kΩ resistor sets the gain at 20 (26dB). If a capacitor is put from Pin1 to Pin8, bypassing the 1.35kΩ resistor, the gain will go up to 200 (46dB). If a resistor is placed in series with the capacitor, the gain can be set to any value from 20 to 200. Gain control can a ...
NE602 (Mixer)
NE602 (Mixer)

... Figure 8 shows a Colpitts varacter tuned tank oscillator suitable for synthesizer-controlled applications. It is important to buffer the output of this circuit to assure that switching spikes from the first counter or prescaler do not end up in the oscillator spectrum. The dual-gate MOSFET provides ...
PDF Version
PDF Version

... DISH Pro Plus 33 (DPP33), and DISH Pro 34 (DP34). For reception of three satellites, the DPP33 with three receiver ports or the DP34 with four receiver ports would be the selection. The DPP44 with four receiver ports would be the switch to use if four satellites are desired. All switches provide sat ...
Capacitor Self
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Motor Branch Circuit Protection - Circuit Protection

... device if the motor is not able to start. All Class CC fuses can be increased to 400%, along with non-time-delay fuses not exceeding 600 amps. Time-delay (dual-element) fuses can be increased to 225%. All Class L fuses can be increased to 300%. Inverse time (thermal-magnetic) circuit breakers can be ...
lesson 2 - Walden University ePortfolio for Mike Dillon
lesson 2 - Walden University ePortfolio for Mike Dillon

Review PSTN
Review PSTN

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Determining Equivalent Resistance with PSPICE +
Determining Equivalent Resistance with PSPICE +

Space: a Toolbox for the Simulation of Analog
Space: a Toolbox for the Simulation of Analog

... Simulink, could handle the simulation of systems and numerical circuits, but not of analog circuits. In this paper, we present a Matlab toolbox called Space that allows, under a user-friendly environment, the simulation of linear and nonlinear analog electronic circuits. The circuit is graphically s ...
Low-Distortion Sine Wave Oscillator with Precise RMS Amplitude
Low-Distortion Sine Wave Oscillator with Precise RMS Amplitude

... The oscillation occurs at a frequency of 1/(2πRC), where R and C are the positive feedback components of the amplifier. The attenuation of the negative feedback network is approximately 3, to match the attenuation encoun- ...
The Pullen Mixer
The Pullen Mixer

... noise effects, with the result that it has a much lower noise content than in the corresponding multigrid mixer. The improvement resulting is more than sufficient to justify the use of the additional complexity in the circuit. The local oscillator signal required with this mixer, depending on the ty ...
Leak Mk1 FM Tuner restoration
Leak Mk1 FM Tuner restoration

Operational amplifier
Operational amplifier

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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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