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MAX2622/MAX2623/MAX2624 Monolithic Voltage-Controlled Oscillators General Description Features
MAX2622/MAX2623/MAX2624 Monolithic Voltage-Controlled Oscillators General Description Features

... the PLL loop filter. The loop filter is presumed to provide an appropriately low-impedance source. It may incorporate an extra RC filter stage to reduce high-frequency noise and spurious signals. Any excess noise on the tuning input is directly translated into FM noise, which can degrade the phase-n ...
Summary: A brief description of Kirchoff`s Laws (current and voltage)
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Oscilloscope Homebrew
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... The trigger level pot adjusts the level of the +input voltage to U5A and the incoming signal provides the negative input. The two 1N4148 diodes protect the inputs. The Sync Source switch selects the source of the sync signal. It can come from the vertical amplifiers, from an external source, from t ...
AN1229
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... transform the unbalanced 50 Ω to a balanced 12.5 Ω (2 x 6.25 Ω) which is very near to the total optimum load resistance. The first section, a 5" long - 50 Ω flexible coaxial cable, and the second section, two 5" long - 25 Ω flexible coaxial cables, are connected as described in Figure 6. To compensa ...
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... an opamp) will produce a sharp transition between regions of processing and no processing. It is possible to combine several types of controlvoltage processing into one circuit, by using diodes to switch control-voltage processor paths based on the output voltage from the detector. For example, in a ...
Homework set no 3 - Department of Applied Engineering
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... Calculate Iout and Vout. 8Sketch Vin and Vo vs. time in the circuit shown. Assume Vin is a 4Vpk triangular waveform at 100 Hz. 20kΩ ...
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... type of transformation is typical for biosignal amplifiers, and its prevention involves complicated circuits, whose performances usually do not merit the investment of material and effort for their implementation. On the other hand, modern software methods for power-line interference suppression and ...
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... obvious advantage is that the 10Mohm high input resistance of the summing resistor(s) reduces the loading on the input signal sources and therefore affords better signal accuracy and integrity. The input leakage currents to the operational amplifier must be significantly lower than the lowest input ...
CONVENTIONAL - Optical Smoke Beam Detector Model 6500R and
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... will be installed. In addition to four fixed value alarm thresholds, there are two variable thresholds that automatically compensate for changes in the environment which could otherwise result in unwanted alarms while remaining within a known sensitivity range. ...
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... filtering, hence extending battery life and reducing system complexity, which are especially important for portable wireless devices. Also the bandwidth www.ijera.com ...
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... current (Io,0, Io,1, Io,2, Io,3, Io,4 ) have equal amplitude of 13.3 V and 3.5 mA, respectively. V. CONCLUSION A new multiphase sinusoidal oscillator based on CDBAs is proposed. The proposed circuit can generate sinusoidal waveforms of both voltage and current signals in the same circuit, so it can ...
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... 01) An inductor of self-inductance 300 mH and resistance 5 is connected to a battery of negligible internal resistance. Calculate the time in which the current will attain half its final steady value. 02) The charge on a perfect capacitor of capacitance 2 F falls to 50% of its value in 6 minutes, ...
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... learn transistors later); we just want you to meet them experimentally. The regulator circuit is as shown below: it uses a Zener diode as a voltage reference (VZ = 5.5V), and a single transistor connected as a voltage follower (or Emitter Follower). Double check to be sure you have not accidentally ...
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... voltage suppressor ICs from ProTek Devices, model numbers LCA05C to LCA15C. The two digits in the part number pertain to the rated stand-off voltage, VWM, which is the maximum working DC voltage applied to the device. These TVS devices are especially designed for serial data communications because o ...
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... The LA7625 is based on the LA7620 with the video circuit DC restoration factor changed to 100%. The LA7625 is small, multifunction ICs in which video, chroma and deflection circuits for NTSC color TV system are packaged in a shrink-type DIP30S (the same type as the earlier DIP22). In addition to bei ...
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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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