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theremin - Courses
theremin - Courses

... Continuous Pitch: The theremin is a continuous pitch instrument like trombone or violin which makes staying in tune difficult. Also the lack of any physical reference makes playing difficult to learn. Continuous Volume: Staccato playing or quick stops and starts are difficult with the theremin becau ...
Adding Heart to Your Technology
Adding Heart to Your Technology

... 1. Initially, without any heart rate transmission, place a Polar Heart Rate Monitor in possible and desired location for the receiver. These tests should be performed during operation of end user equipment with light and heavy loads. If the “!“ symbol in the wrist receiver is blinking it means that ...
here - AudioFaiDaTe
here - AudioFaiDaTe

... holes, which help to prevent excessive PCB bending while inserting and pulling tubes from their sockets. Warning The PCB is for use with a high-voltage power supply, so be cautious at all times once the power supply is attached, as a real shock hazard exists. Assume that capacitors will have retaine ...
FE_ASIC_for_SLHCb_Dec10 - Indico
FE_ASIC_for_SLHCb_Dec10 - Indico

DC Circuits
DC Circuits

... 6. The (conventional) current is indicated by the little moving dots. According to our definition of current, which end of the battery is the positive end? ...
Low Band High Performance Preamp
Low Band High Performance Preamp

... The ideal low band preamp should have sufficient gain to allow use of the typically low output RX antennas with most modern transceivers. At the same time, the Noise Figure (NF) must be sufficiently low as to not degrade the SYSTEM noise temperature. (SYSTEM noise temperature includes your receiver, ...
JC Morrison on Phase Splitters
JC Morrison on Phase Splitters

... between the two outputs because of the small difference in transit time: output one is added to output two. This is a problem mainly as frequency increases. The thing is that we actually need a clean bandwidth far in excess of what we hear, and especially far in excess of the tranny(ies). This is be ...
11 - Edmodo
11 - Edmodo

... electricity produced by the continuous flow of electrons (remember only electrons move, protons do not). In order for this flow to happen we require two things: 1) an energy source – such as a battery or electrochemical cell 2) a complete path – created by connecting wires Together this forms an ele ...
Parallel Circuit Lab
Parallel Circuit Lab

... 10._____ Name a part of your circuit that had resistance that was never discussed               in this lab? (4 pts) ...
Common Mode Feedback Analysis for EIT Systems
Common Mode Feedback Analysis for EIT Systems

... Abstract. The use of differential voltage measurements is widely used in EIT instruments. Instrumentation amplifiers are always affected by common mode voltages at their input. These voltages may have different origins, being the current sources and multiplexers the ones which contribute the most. H ...
MAX2130 Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications General Description
MAX2130 Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications General Description

... Amplifier for TV Tuner Applications The DAC output voltage, VADJ, required to set an equivalent resistance to ground, REQ, seen by the BIAS port, can be calculated with the following equation: VADJ = 2.4V - (RBIAS ✕ VBIAS) / REQ where RADJ = RBIAS, VBIAS = 1.2V, REQ ≥ 10kΩ. ...
Template For Examination Papers
Template For Examination Papers

... 1) Part of a 2 Volt digital system contains a 74HCT08 chip. A data sheet for this device is supplied. For this chip, and for an assumed working temperature of 25 °C, determine the following: a) The minimum voltage for a logic '1' output. b) The worst-case noise margin. c) Explain the term ‘propagati ...
DTC Descriptors DTC P0111 • Intake Air Temperature (IAT) sensor
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Manual for Frequency Counter 2.7 Ghz
Manual for Frequency Counter 2.7 Ghz

... Turn the knob counterclockwise for updating faster reading, or turn it clockwise for more resolution (digital display). Pulling out the GATE TIME knob to freeze the latest displayed reading for being written down. Then return the counter to normal operation by pressing back the knob. When the instru ...
RFID DESIGN, SIMULATION, AND IMPLEMENTATION Akram Abu
RFID DESIGN, SIMULATION, AND IMPLEMENTATION Akram Abu

... RFID Tags RFID tag are small electronic devices that consist of a small chip and an antenna. The chip typically is capable of carrying some kind of information depending on applications. Tags are usually applied to items, often as part of an adhesive bar-code label. Tags receive the signal via their ...
BME 317 Medical Electronics Lab
BME 317 Medical Electronics Lab

... II. Output Offset Voltage: Output offset voltage is the dc voltage that appears at the output of the operational amplifier when both inputs are zero volts. This voltage is caused by input offset voltage, due to slightly mismatched transistors in the differential amplifier input stage, and difference ...
ST3241EB
ST3241EB

... It is a complete serial port (3 drivers, 5 receivers) intended for notebook or sub-notebook computers. Receivers R1 and R2 have extra outputs in addition to their standard outputs. These extra outputs are always active. Typical applications are in notebooks, subnotebooks, palmtop computers, battery- ...
Reviewing key areas when designing with the NE605
Reviewing key areas when designing with the NE605

... Choosing the Appropriate IF Frequency Some of the standard IF frequencies used in industry are 455kHz, 10.7MHz and 21.4MHz. Selection of other IF frequencies is possible. However, this approach could be expensive because the filter manufacturer will probably have to build the odd IF filter from scra ...
5.8 BJT Internal Capacitances
5.8 BJT Internal Capacitances

Studyphysics! PDF
Studyphysics! PDF

... • Remember that the current you calculated in (a) is the current anywhere in the circuit. " We will use this current and the resistance of each resistor to figure out the voltage drop across each resistor… The 3.0Ω resistor ! V = IR = 0.75A (3.0Ω) = 2.3 V The 4.0Ω resistor ! V = IR = 0.75A (4.0Ω) = ...
PLL applications The phase-lock-loop
PLL applications The phase-lock-loop

... rejected, thus: d) The XOR PD has good noise rejection. Another important feature is whether the pll will lock on a harmonics of input data, the XOR PLL will lock on harmonics. To prove this replace any of clock signals at previous figures with twice/half the frequency, the average output will remai ...
Lab #12 - facstaff.bucknell.edu
Lab #12 - facstaff.bucknell.edu

... Introduction The design of most MOSFET amplifiers is divided into the separate tasks of biasing and smallsignal modeling. Biasing is the adjustment of the “quiescent” (average) DC voltages and currents in the circuit so that the positive and negative excursions of the applied input signal do not cau ...
NV-3272 Datasheet
NV-3272 Datasheet

WEEK 1 SUMMARY - Oregon State University
WEEK 1 SUMMARY - Oregon State University

AN21 - Composite Amplifiers
AN21 - Composite Amplifiers

... gain, similar to Q1 and Q2 in Figure 11. Q7-Q10 form the output buffer stage. The feedback scheme is identical to Figure 11’s, with summing action at the Q3-Q4 emitter connection. To obtain maximum bandwidth, quiescent current is quite high. Without closed-loop control, the circuit will quickly go i ...
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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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