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by Kenneth A - Kenneth A. Kuhn
by Kenneth A - Kenneth A. Kuhn

... some simplifying approximations, are necessary because characteristics of commoncollector stages are dependent on external impedances. The student should not be afraid of approximations since that is routinely done all the time in the profession. An advantage of closed loop amplifiers is that approx ...
MAX1472 300MHz-to-450MHz Low-Power, Crystal-Based ASK Transmitter General Description
MAX1472 300MHz-to-450MHz Low-Power, Crystal-Based ASK Transmitter General Description

... In actuality, the oscillator pulls every crystal. The crystal’s natural frequency is really below its specified frequency, but when loaded with the specified load capacitance, the crystal is pulled and oscillates at its specified frequency. This pulling is already accounted for in the specification ...
Chapter_6 - Portal UniMAP
Chapter_6 - Portal UniMAP

AN-4 Monolithic Op Amp—The Universal Linear
AN-4 Monolithic Op Amp—The Universal Linear

1.8-V, 7-MHz, 90-dB CMRR, SINGLE-SUPPLY, RAIL-TO-RAIL I/O OPERATIONAL AMPLIFIER OPA2364-Q1 FEATURES
1.8-V, 7-MHz, 90-dB CMRR, SINGLE-SUPPLY, RAIL-TO-RAIL I/O OPERATIONAL AMPLIFIER OPA2364-Q1 FEATURES

... The OPAx364 family offers excellent CMRR without the crossover associated with traditional complimentary input stages. This results in excellent performance for driving analog-to-digital (A/D) converters without degradation of differential linearity and total harmonic distortion (THD). The input com ...
Keywords: simulation, short
Keywords: simulation, short

... The resulting simulated behaviour of the short-circuit current corresponds to the theoretical assumptions (Fig. 2). The shortcircuit current characteristics begins in zero, then rapidly reaches the maximum value of the short-circuit current at 790 A, in a period of 0,002s. The influences of the chan ...
AN-2094 LM3481 SEPIC Evaluation Board (Rev
AN-2094 LM3481 SEPIC Evaluation Board (Rev

... beyond the normal soft-start cycle. To avoid loss of regulation of the output voltage during current limit during startup, wait until the output voltage is up before turning on the load. Using an active load with a constant-resistance mode will avoid this startup timing issue. ...
FAN5236  Dual Mobile-Friendly DDR / Dual-Output PWM Controller FAN5236 — Dual Mobile-Friendly
FAN5236 Dual Mobile-Friendly DDR / Dual-Output PWM Controller FAN5236 — Dual Mobile-Friendly

... control scheme, and internal feedback compensation provide fast response to load transients. Out-of-phase operation with 180-degree phase shift reduces input current ripple. The controller can be transformed into a complete DDR memory power supply solution by activating a designated pin. In DDR mode ...
Ieee paper
Ieee paper

... High speed induction motor drives are having applications in wide areas. Hence new technologies are being introduced in the existing drive systems to improve their efficiency. A major issue of using conventional IM drives in systems with constant battery source like electric vehicles is that, during ...
A magnetically isolated gate driver for high
A magnetically isolated gate driver for high

... voltages present within the circuit. This implies minimization of the number of turns required in the transformer windings. Conveniently the series arrangement of power MOSFETs lends itself to a linear layout where the potential gradient in the off-state is evenly distributed along the length of a c ...
Fast, faster, fastest!
Fast, faster, fastest!

... charge Qrr has not been removed from the P-N junction, the diode behaves like a short circuit – causing high current flowing not only through it self, but also through the power switch that is turning off the diode. As can be seen from Fig. 2, the maximum reverse recovery current IRRM of the diode i ...
AN604 - STMicroelectronics
AN604 - STMicroelectronics

... current level point Ic, depending on the diode technology. When the current is lower than Ic, the temperature coefficient αVF of the forward voltage is negative. When the current is higher, the temperature coefficient becomes positive. This behavior is shown in Figure 2. For Schottky and bipolar dio ...
Potentiometer - Make Your Point
Potentiometer - Make Your Point

... Learn It! A potentiometer is a variable resistor. Resistors provide electrical impedance to current flow, forcing a voltage drop across their terminals. Most resistors have a fixed resistance value, measured in ohms. A potentiometer functions much like a normal resistor, except that its resistance v ...
WAUS Power Supplies CAT_02-2010
WAUS Power Supplies CAT_02-2010

... 50mV of each other. To achieve this the voltmeter being used must be accurate and all test leads must be securely connected when making the adjustment, not just held or pushed onto the terminals. The method of wiring must also be done in the correct configuration so as to avoid different wire length ...
electrotechnich lab. part 1 - İstanbul Ticaret Üniversitesi
electrotechnich lab. part 1 - İstanbul Ticaret Üniversitesi

... These are the resistors of which the value of resistance can be adjusted between zero and a specific value. In electric circuits, voltage or current at a specific point can be adjusted. Three types of adjustable resistors are produced: trimpots, potentiometers and rheostats. Trimpots: These resistor ...
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EE Treasure Hunter

TB62262FTAG
TB62262FTAG

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... The sum of the increases in energy in some circuit elements must equal the sum of the decreases in energy in other elements. The potential energy decreases whenever the charge moves through a potential drop IR across a resistor or whenever it moves in the reverse direction through a source of emf. T ...
File tda1562 | allcomponents.ru
File tda1562 | allcomponents.ru

... 1. The low frequency power roll-off is determined by the value of the electrolytic lift capacitors. 2. The low frequency gain roll-off is determined by the value of the input coupling capacitors. 3. Supply voltage ripple rejection is measured across RL; Vripple = Vripple max. = 2 VPP. 4. Common mode ...
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Aalborg Universitet

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SFH619A - Vishay

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EC28 - aes journals

... communication link is determined in large part by the characteristics of the VCO and in today’s wireless communication systems greater frequency range is required by the VCOs. Traditionally, VCOs using CMOS technology have been used for low frequency applications, but submicron processes have allowe ...
electrical systems on meriden triumphs
electrical systems on meriden triumphs

... vibration or heat (continuous current for extended periods – burnout). The secondary can go open, or can short turns (a current path between layers of the winding, resulting in greatly reduced output), or a short to the outer case. Testing of the coil is a 4 step process. First take all connections ...
AN1080/D External−Sync Power Supply with Universal Input
AN1080/D External−Sync Power Supply with Universal Input

... Two types of power switches are considered for the flyback power supply. They are TMOS power FETs, and the state−of−the−art perforated emitter bipolar transistors introduced in 1988. The series TMOS FETs simplifies the design of driving circuits and provides extremely fast switching transitions. The ...
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Current source



A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.A current source is the dual of a voltage source. The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types - an independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.
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