Technician Licensing Class
... Consists of two sets of rotating conducting plates separated by an insulator, which can be varied in surface area exposed to each other ...
... Consists of two sets of rotating conducting plates separated by an insulator, which can be varied in surface area exposed to each other ...
Digital and Pulse-Train Conditioning
... Many data acquisition systems include TTL-compatible counter/timer ICs that can perform gated-pulse, digitallevel input, however, they are unsuitable for unconditioned analog signals. Fortunately, many frequency-output devices feature a TTL output option. Some products use a counter/timer IC, which ...
... Many data acquisition systems include TTL-compatible counter/timer ICs that can perform gated-pulse, digitallevel input, however, they are unsuitable for unconditioned analog signals. Fortunately, many frequency-output devices feature a TTL output option. Some products use a counter/timer IC, which ...
kits - rf projects
... player to a car radio that has no CD player. School uses include running a “broadcast station” from another room as a speech class exercise. The unit is powered by a 9V transistor battery, or you could use an AC wall adaptor. No. 80-060 ...
... player to a car radio that has no CD player. School uses include running a “broadcast station” from another room as a speech class exercise. The unit is powered by a 9V transistor battery, or you could use an AC wall adaptor. No. 80-060 ...
Circuit Note CN-0275
... AD8147 but does not include the dedicated sync-on-commonmode circuitry. The AD8146 is typically used in systems that place the vertical and horizontal synchronization pulses in the blanking intervals of the video signal instead of on the common-mode voltages. The AD8148 is the same as the AD8147 but ...
... AD8147 but does not include the dedicated sync-on-commonmode circuitry. The AD8146 is typically used in systems that place the vertical and horizontal synchronization pulses in the blanking intervals of the video signal instead of on the common-mode voltages. The AD8148 is the same as the AD8147 but ...
Lecture 9
... Ch. 7 - Induction Machines Motors and generators whose magnetic field current is supplied by magnetic induction (transformer action) into the field windings of the rotor (a DC power source is not required) Although induction machines can be motors or generators they have many disadvantages as gen ...
... Ch. 7 - Induction Machines Motors and generators whose magnetic field current is supplied by magnetic induction (transformer action) into the field windings of the rotor (a DC power source is not required) Although induction machines can be motors or generators they have many disadvantages as gen ...
Test Procedure for the NCP4894 Evaluation Board
... The NCP4894 requires a differential signal to drive the audio amplifier. This is done using a waveform generator with a differential output signal. Set a sinewave differential signal on the input connector (J2). The middle point is connected to ground while INM and INP signals are in opposite phases ...
... The NCP4894 requires a differential signal to drive the audio amplifier. This is done using a waveform generator with a differential output signal. Set a sinewave differential signal on the input connector (J2). The middle point is connected to ground while INM and INP signals are in opposite phases ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... power, efficiency is the more significant parameter. A large part of the energy sent out by the generating plant must arrive at the receiver or receivers to make the system economical. The traditional way of transferring wireless energy mostly depends upon electromagnetic induction. We find many dif ...
... power, efficiency is the more significant parameter. A large part of the energy sent out by the generating plant must arrive at the receiver or receivers to make the system economical. The traditional way of transferring wireless energy mostly depends upon electromagnetic induction. We find many dif ...
THE HQ-170A ATION S COMMUN 1C RECEIVER
... will not be very noticeable unless the proper procedure is employed. The suggested procedure is as follows: Tune in an AM signal on any band or any other strong constant carrier of similar nature, such as crystal calibrator. Whenever the receiver is being tuned for normal reception be sure to first ...
... will not be very noticeable unless the proper procedure is employed. The suggested procedure is as follows: Tune in an AM signal on any band or any other strong constant carrier of similar nature, such as crystal calibrator. Whenever the receiver is being tuned for normal reception be sure to first ...
Principles of Electronic Communication Systems
... third, fifth, seventh, etc. harmonics. Amplitude modulation by square waves or rectangular pulses is referred to as amplitude shift keying (ASK). ASK is used in some types of data communications. ...
... third, fifth, seventh, etc. harmonics. Amplitude modulation by square waves or rectangular pulses is referred to as amplitude shift keying (ASK). ASK is used in some types of data communications. ...
An antenna is a transducer designed to transmit or receive radio
... dimensional (usually horizontal or vertical) plane are: 1. either Omni-directional , such as a vertical rod or 2. Directional . Typically, antennas are designed to operate in a relatively narrow frequency range. The design criteria for receiving and transmitting antennas differ slightly, but general ...
... dimensional (usually horizontal or vertical) plane are: 1. either Omni-directional , such as a vertical rod or 2. Directional . Typically, antennas are designed to operate in a relatively narrow frequency range. The design criteria for receiving and transmitting antennas differ slightly, but general ...
Lab 1. LNA characterization, lab manual
... a) Estimate the required output power levels of the two signal generators so that the corresponding power levels after the variable attenuator equal -5 dBm if the variable attenuation equals 5 dB. __________________________________________________________________________ b) What are the measured pow ...
... a) Estimate the required output power levels of the two signal generators so that the corresponding power levels after the variable attenuator equal -5 dBm if the variable attenuation equals 5 dB. __________________________________________________________________________ b) What are the measured pow ...
History of Frequency Modulation - Hik
... In the case of an amplitude modulated signal the bandwidth required is twice the maximum frequency of the modulation. Whilst the same is true for a narrowband FM signal, the situation is not true for a wideband FM signal. Here the required bandwidth can be very much larger, with detectable sidebands ...
... In the case of an amplitude modulated signal the bandwidth required is twice the maximum frequency of the modulation. Whilst the same is true for a narrowband FM signal, the situation is not true for a wideband FM signal. Here the required bandwidth can be very much larger, with detectable sidebands ...
Positive Negative
... Because a transducer can be a transmitter and a receiver of ultrasonic energy, it clearly stands to reason that a continuous voltage waveform can not be used. If such a waveform was used, the transducer would always function as a transmitter. Since the internally generated sound waves are stronger t ...
... Because a transducer can be a transmitter and a receiver of ultrasonic energy, it clearly stands to reason that a continuous voltage waveform can not be used. If such a waveform was used, the transducer would always function as a transmitter. Since the internally generated sound waves are stronger t ...
Heterodyne
Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.