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Elec and Comp Tech 62B Semiconductor Devices
Elec and Comp Tech 62B Semiconductor Devices

E1 power amplifier
E1 power amplifier

... High-gain voltage amplifiers are widely available for instrumentation and other applications in a single integrated circuit, usually called an 'operational amplifier'. However, commonly used types have limited output currents, about 15 mA, precluding their use in higher power applications, such as a ...
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... Most data acquisition systems accommodate a variety of input ranges, although the manner in which they do so varies considerably. Some data acquisition systems allow the input range to be switched or jumper selected on the circuit board. Others provide software-selectable gain. This is more convenie ...
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How to Use an LCR Meter - Techni-Tool

DN240 - ADSL Modems That Use the LT1886 As a Line Driver Yield Long Reach and Fast Data Rates
DN240 - ADSL Modems That Use the LT1886 As a Line Driver Yield Long Reach and Fast Data Rates

... A key component in making this happen is the power amplifier used to drive the encoded data signal on to the phone line. Ideally the line driver must not introduce any distortion of the transmitted signal. This allows the system to maximize the data rate over the longest wiring reach possible by usi ...
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45GHz Monolithic Gilbert Cell Mixer

... The three transistors in the circuit were chosen to be of equal gate width. A +5 V supply was used, resulting in a Vds of +2.5 V for each stage. The current source was biased to approximately 25% Idss by a negative voltage. This resulted in approximately 12.5% Idss flowing in each one of the mixer p ...
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NVIDIA GeForce2 GTS and GeForce2 MX Voltage

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Embedded Computer Systems Elec 296

... have a pull-up resistor can save the battery power. • In the accompanying diagram of a pull-up resistor, having the switch open allows the logic gate to sense the input voltage level without having to supply the voltage. When the switch is closed, the ground can be seen by the logic gate because of ...
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A Novel Single-Resistance-Controlled CFOA-Based

... A resistor or a capacitor can realize each of Z1, Z2 and Z3. Therefore, several oscillator circuits can be derived. In deriving these oscillator circuits it must be noted that pure capacitive feedback between the output and the inverting input of the CFOA is not allowed [1]. Thus, a resistive feedba ...
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Output voltage for Step 4 (volts)

... All results, within reason, are what were expected. A small amount of error may have resulted from error in each components actual value, or from background noise. In part 1, step 3, the gain calculated for low frequencies (see Appendix II) was approximately the same as that predicted in step 1 (10 ...
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Chapter 5 - William Stallings, Data and Computer

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Andre_Carpenter_02072014_clean_version - Proof

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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.
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