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Page 43, Foundation Electronics, Kemp
Page 43, Foundation Electronics, Kemp

... Circuit 1 55. Draw the truth table out for a NAND gate. 56. By stating the logic levels at various places explain how the bistable (or latch) in Circuit 1 works. 57. Circuit 2, below, is the same circuit as Circuit 1 above. It is sometimes drawn this way in exams. Don’t be phased the same explanatio ...
LTC1562-2 - Very Low Noise, Low Distortion Active RC Quad Universal Filter
LTC1562-2 - Very Low Noise, Low Distortion Active RC Quad Universal Filter

... center frequency (fO) of 20kHz to 300kHz. Unlike most monolithic filters, no clock is needed. Four independent 2nd order filter blocks can be cascaded in any combination, such as one 8th order or two 4th order filters. Each block’s response is programmed with three external resistors for center freq ...
installation operation and maintenance siltronix model 1011d
installation operation and maintenance siltronix model 1011d

Time transfer through optical fibers over a distance of 73 km
Time transfer through optical fibers over a distance of 73 km

... circulators are used to combine transmitted and received signals at both ends of the fiber. Optical isolators at both sides protect the E/O against back-scattered light from the circulators. The two optical signals are transported through one single-mode fiber in opposite directions whereby the sign ...
M-8870 DTMF Receiver
M-8870 DTMF Receiver

... bandsplit filter and decoder functions into a single 18-pin DIP or SOIC package. Manufactured using CMOS process technology, the M-8870 offers low power consumption (35 mW max) and precise data handling. Its filter section uses switched capacitor technology for both the high and low group filters an ...
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as a PDF

G7A01 What safety feature does a power
G7A01 What safety feature does a power

... A. Divide the DC input power by the DC output power B. Divide the RF output power by the DC input power C. Multiply the RF input power by the reciprocal of the RF output power D. Add the RF input power to the DC output power ...
MAX7490/MAX7491 Dual Universal Switched-Capacitor Filters General Description Features
MAX7490/MAX7491 Dual Universal Switched-Capacitor Filters General Description Features

... resistors, can generate all standard 2nd-order functions: bandpass, lowpass, highpass, and notch (band reject). Three of these functions are simultaneously available. Fourth-order filters can be obtained by cascading the two 2nd-order filter sections. Similarly, higher order filters can easily be cr ...
STEPS tutorial
STEPS tutorial

Low Distortion 1.0 GHz Differential Amplifier
Low Distortion 1.0 GHz Differential Amplifier

... are used to match the 200 Ω source to a 50 Ω load. For a frequency of 10 MHz, the same capacitor and inductor values previously found using the resonant approach will transform the 200 Ω source to match the 50 Ω load. At frequencies exceeding 100 MHz, the S parameters from Tables II and III should b ...
AD810 AnaDev 80MHz 1KV_uS 36V, disable and trim.pdf
AD810 AnaDev 80MHz 1KV_uS 36V, disable and trim.pdf

... The AD810 is a composite and HDTV compatible, current feedback, video operational amplifier, ideal for use in systems such as multimedia, digital tape recorders and video cameras. The 0.1 dB flatness specification at bandwidth of 30 MHz (G = +2) and the differential gain and phase of 0.02% and 0.04° ...
TSH511
TSH511

... TSH511. The sensitive LNA, directly connected to the photo diode, does not require an external pre-amplifier. After filtering, the amplified signals are limited and demodulated with quadrature demodulators. The two integrated audio buffers directly drive the stereo headphones. The audio power reache ...
A 40 MHz 70 dB Gain Variable Gain Amplifier Design
A 40 MHz 70 dB Gain Variable Gain Amplifier Design

... In wireless communications systems, the amplitude of the receiver and transmitter signals varies greatly. For this reason, like in digital cellular receivers, the system requires about 80 dB of dynamic gain variation and splits into RF and IF/baseband stages. Thus, to cover such a wide dynamic range ...
T D A 7 1 1 6 F
T D A 7 1 1 6 F

... 866 ... 870 MHz. The IC offers a high level of integration and needs only a few external components. The device contains a fully integrated PLL synthesizer and a high efficiency power amplifier to drive a loop antenna. A special circuit design and an unique power amplifier design are used to save cu ...
Chapter 3 - Lab 2: Filters and Operational Amplifiers
Chapter 3 - Lab 2: Filters and Operational Amplifiers

... attenuated, with the output going to zero as the frequency goes to infinity. It is a low pass filter. 3. Design of a low-pass RC filter for a specific application. Before getting into the details of designing an appropriate low-pass filter, let’s clarify the characteristics we need to achieve. The s ...
Institutionen för systemteknik Department of Electrical Engineering A “Divide-by-Odd Number” Injection-Locked Frequency Divider.
Institutionen för systemteknik Department of Electrical Engineering A “Divide-by-Odd Number” Injection-Locked Frequency Divider.

... of applications such as GPS systems, radio receivers, radio telephones, mobile telephones satellite receivers, etc. Frequency synthesizers are capable of generating a required output signal by combining frequency division, frequency multiplication, and frequency mixing operations. Phase-locked loop ...
G7 - PRACTICAL CIRCUITS [2 exam question - 2 groups]
G7 - PRACTICAL CIRCUITS [2 exam question - 2 groups]

... filter the DC output of a switching power supply is low equivalent series resistance An advantage of a switched-mode power supply as compared to a linear power supply is high frequency operation allows the use of smaller components A 180 degree portion of the AC cycle is converted to DC by a half-wa ...
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File - David Callen

Transimpedance amplifier (140MHz)
Transimpedance amplifier (140MHz)

... Assuming a data rate of 400 Mbaud (Bandwidth, B=200MHz), the noise parameter Z may be calculated as:1 ...
Sigma-delta A/D converter in HTS ramp edge technology
Sigma-delta A/D converter in HTS ramp edge technology

... In the case of the sigma-delta converter the process is been shown in the niobium trilayer junction technology allowing RSFQ circuits consisting of many Josephson slightly more complex due to the addition of the low ohmic junctions. A further gain in operation speed and sampling resistor. After the ...
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9HSTF MG*afj

LTC1562-2 - Linear Technology
LTC1562-2 - Linear Technology

... center frequency (fO) of 20kHz to 300kHz. Unlike most monolithic filters, no clock is needed. Four independent 2nd order filter blocks can be cascaded in any combination, such as one 8th order or two 4th order filters. Each block’s response is programmed with three external resistors for center freq ...
FM Transmitter - University of Maryland, College Park
FM Transmitter - University of Maryland, College Park

... • LM7171 Wide-Band Power Amplifier • 741 Op Amp ...
T D A 7 1 1 0 F
T D A 7 1 1 0 F

... 433 ... 435 MHz. The IC offers a high level of integration and needs only a few external components. The device contains a fully integrated PLL synthesizer and a high efficiency power amplifier to drive a loop antenna. A special circuit design and an unique power amplifier design are used to save cu ...
LMH6570 2:1 High Speed Video Multiplexer (Rev. C)
LMH6570 2:1 High Speed Video Multiplexer (Rev. C)

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Superheterodyne receiver



In electronics, a superheterodyne receiver (often shortened to superhet) uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original radio carrier frequency. It was invented by US engineer Edwin Armstrong in 1918 during World War I. Virtually all modern radio receivers use the superheterodyne principle. At the cost of an extra frequency converter stage, the superheterodyne receiver provides superior selectivity and sensitivity compared with simpler designs.
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