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the biquad filter
the biquad filter

... The Q-factor and the resonant frequency are not independent in this circuit. For high frequencies, the bandwidth will be the same as that for low frequencies. This, in general, is not a desirable feature. For example, in an audio mixing desk, the equalising section would use a state-variable circuit ...
Inductor Lab (RL and LC circuits)
Inductor Lab (RL and LC circuits)

Strain gage
Strain gage

... Pre-Lab 1. Consider the difference amplifier shown in Figure 1 and in Example 2.6 in Sedra and Smith. Design the amplifier with a differential gain of about 30 with R1 between 4 and 6 KΩ. 2. Consider the instrumentation amplifier shown in Figure 3 and in Example 2.7 in Sedra and Smith. Design the am ...
Equations and Key Concepts (Excellence Project)
Equations and Key Concepts (Excellence Project)

Microphone Preamplifier
Microphone Preamplifier

... Build the preamplifier circuit on your breadboard. Feed the input signal to the preamplifier and also into channel one of your oscilloscope. Feed the output signal from teh pre-amplifier into channel two. In order to obtain full marks for this segment of the lab, you should be able to show your TA t ...
Product features
Product features

... Control functions include Mute, On/Standby for immediate optimum performance without warm‐up and Low/High bias options in addition to Green Bias for automatic bias control via a Gryphon preamplifier. An intelligent, non‐invasive protection system with no circuit breakers in the signal path monitors ...
EE101L Laboratory 4
EE101L Laboratory 4

Types Of Electrical Circuits
Types Of Electrical Circuits

Risistor
Risistor

... Dark/light and temperature sensors usually have these components, as the potentiometer / variable resistor allows the circuit to be made more or less sensitive (they can be turned up or down reducing or increasing resistance). ...
1 β iC 2N2222 2N3904 IS (at 20 Degrees Celsius
1 β iC 2N2222 2N3904 IS (at 20 Degrees Celsius

... the base input (node “B”) and set its output to deliver a 10KHz. sine wave with a peak amplitude less than 0.5 volt. (Remember, this is an AMPLIFIER - DON’T OVERDRIVE IT) The input coupling capacitor reactance should be negligible when compared to the input impedance of the amplifier. (Xc < Rin /10) ...
voltage-controlled oscillator for fm broadcast radio receiver
voltage-controlled oscillator for fm broadcast radio receiver

... The transfer function for the amplifier with feedback is ...
PDF File!
PDF File!

... mu triode section is a tad hard to tame. It requires less bias voltage. I'll try another glowbug with this tube but with a Colpitts oscillator instead. Stay tuned, I will make a 6GW8/ECL86 bug also, perhaps after I have finished the Eurobug ...
HQ-170 Manual
HQ-170 Manual

... be rotated very slowly throughout its range, observing the S meter. It will be found that one particular spot throughout the range of the slot depth control a further reduction in the S meter reading will be obtained. Once this setting has been obtained, the slot depth control may be left permanentl ...
EXPERIMENT NO 4
EXPERIMENT NO 4

... inputs, viz. inverting (v-), and non-inverting (v+), and one output (vo ). The input-output relationship of an opamp is given by vo = A(v+- v-) where, the differentia1 voltage gain A is very large. For an ideal opamp (i) A is infinite, (ii) the input impedance is infinite, and (iii) the output imped ...
WM-UR802 8 Channel UHF Wireless Microphone
WM-UR802 8 Channel UHF Wireless Microphone

... Suitable for compact conference system for small board room & meeting room UHF wireless technology to avoid any cable wiring and of easy portability system Supports up to 1600 individual channels to be used simultaneously No interference between two tabletop microphone Infrared frequency synchroniza ...
CH 35 questions for HW
CH 35 questions for HW

... 13. Suppose you have a completed circuit with three lamps connected in parallel. Circle the letter of the statement that correctly describes what happens if the filament of the middle lamp burns out. a. Current stops, and the remaining two lamps will also go out. b. Both of the remaining lamps will ...
The Yaesu FT200
The Yaesu FT200

... Bandswitched heterodyne oscillator This is a crystal oscillator using silicon type 2SC372 transistor, and it is operative on bands 7, 21 and 28 MHz. VFO The VFO is a transistorised Colpitts circuit with 25C372 oscillator and 25C372 buffer. It has linear tuning over the range 5 to 5.5 MHz. A passband ...
a AN-419 APPLICATION NOTE •
a AN-419 APPLICATION NOTE •

... a popular device used to implement a low cost, high speed, digital synthesis system. Clocking the AD9850 at its maximum rate of 125 MHz may present some technical challenges especially in applications where the phase noise of the sine output is a major concern. Numerous requests for recommended high ...
Document
Document

7708/7807LR
7708/7807LR

... • Built-in gain for optimal signal level tuning. • Gain may be adjusted manually in 0.5dB steps, or through AGC or IGC modes. AGC automatically maintains a fixed target level, while IGC provides simple automatic compensation for fiber loss by making the output level track the input level at the Smar ...
Alignment using a Wobbulator
Alignment using a Wobbulator

... The ‘scope’s ramp signal controls the sweep width of the wobbulator’s voltagecontrolled oscillator (VCO) +/- from the pre-set centre frequency (it does this by applying the ramp voltage to a varicap diode) – see figure below; The output voltage of the IF amplifier will vary depending on the range of ...
work sheet 1 unit-1 two port network theory
work sheet 1 unit-1 two port network theory

... 4. How many two port networks need to be connected for series connection? a. 2 b. 3 c. 4 d. 1 5. Name the type of interconnection. ...
Q: What happens when a current has too much power?
Q: What happens when a current has too much power?

Astable multivibrator
Astable multivibrator

... C1 charges up through R1 and C2 charges up through R4 As soon as B2 reaches 0.7 V T2 switches on Note that C1 charges slowly through the large resistor R1 while C2 charges more quickly through the small resistor R4. When T2 switches on O2 drops to nearly 0 V, B1 drops by 6 V to –5.3 V and T1 goes of ...
Experiment 11
Experiment 11

... When the frequency of the applied signal is low, the circuit is capacitive and the current leads the voltage. At high frequencies, the circuit is inductive and the current lags the voltage. At some intermediate frequency, the circuit is purely resistive and the phase difference between the voltage a ...
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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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