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Pulse-Width Modulation Control Circuits
Pulse-Width Modulation Control Circuits

... The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494 ...
Semiconductor Devices - CBSE Plus Two Help Files
Semiconductor Devices - CBSE Plus Two Help Files

NPCT datasheet - Bergoz Instrumentation
NPCT datasheet - Bergoz Instrumentation

XC9500XL CPLD Automotive IQ Family ( ver1.3, 434 KB
XC9500XL CPLD Automotive IQ Family ( ver1.3, 434 KB

... 1. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those listed under Operating Conditions is not implied. Exposure to Absolute Maximum ...
a High Accuracy anyCAP™ 200 mA Low Dropout Linear Regulator ADP3303
a High Accuracy anyCAP™ 200 mA Low Dropout Linear Regulator ADP3303

... amplifier is constructed in such a way that at equilibrium it produces a large, temperature proportional input “offset voltage” that is repeatable and very well controlled. The temperatureproportional offset voltage is combined with the complementary diode voltage to form a “virtual bandgap” voltage ...
3 Ohm’s Law Experiment 3.1
3 Ohm’s Law Experiment 3.1

... A voltmeter must be connected in parallel (across) to the circuit element of interest, as shown in Fig. 3.4(a). Since the voltmeter measures potential difference between two points, it is easy to connect. To measure the potential difference (voltage drop) across a resistor, use two cables to connect t ...
Pulse-Width Modulation Control Circuits
Pulse-Width Modulation Control Circuits

... The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494 ...
4CX1500B 8660
4CX1500B 8660

... Plots of H1 distortion versus power output under two-tone conditions, as a function of zero-signal plate current, are included to illustrate the effect of this parameter upon distortion. Because the 4CX1500B has very low grid interception, it is possible to drive the grid positive without any advers ...
Charging System Tests and Voltage Information
Charging System Tests and Voltage Information

... 1. Engine off - Write down voltage of Battery 2. Run for 2 minutes at 2000 RPM 3. Turn on all accessories 4. Take voltage reading, Should go up at least .5 volts Minimum voltage is 13.2 But if charging system is working right I like to see it in-between 13.8-14.8 Volts (CDX says 13.7-14.4) ...
AC DC Internet Articles Medium Wikipedia
AC DC Internet Articles Medium Wikipedia

... voltage requires a higher current and a higher voltage requires a lower current. Since metal conducting wires have a certain resistance, some power will be wasted as heat in the wires. This power loss is given by P = I²R. Thus, if the overall transmitted power is the same, and given the constraints ...
ZXTN25020DZ 20V NPN high gain transistor in SOT89 Summary Description
ZXTN25020DZ 20V NPN high gain transistor in SOT89 Summary Description

... Zetex Semiconductors does not warrant or accept any liability whatsoever in respect of any parts purchased through unauthorized sales channels. ESD (Electrostatic discharge) Semiconductor devices are susceptible to damage by ESD. Suitable precautions should be taken when handling and transporting de ...
Low Starting Current Motors
Low Starting Current Motors

... ATB Laurence, Scott Ltd have designed and manufactured some of the largest motors with reduced starting current. Applications of the low starting current design have been installed on many offshore platforms and FPSO’s where the power generation is limited or in onshore facilities fed from low capac ...
HX460 with External Pulse Width Modulated Drive
HX460 with External Pulse Width Modulated Drive

... GIGAVAC contactors require that coil current does not flow when the contacts open. Since PWM  circuits require a freewheeling or fly back diode be placed across the coil this diode must be  removed from the circuit when the contacts are opened. Figure 1 shows a typical circuit that can  be used to t ...
Document
Document

100 watt DC servo amplifier by Power MOSFET
100 watt DC servo amplifier by Power MOSFET

... At gate of output mosfet is a zener diode to prevent the input signal is higher than 14V, Because mosfet will be damaged. The MOSFET runaway thermal. The advantages of the MOSFET power amplifier circuit that we know very well is to prevent over load by itself. - That is, when the over load, will hig ...
INTRODUCTION: - Electro Tech Online
INTRODUCTION: - Electro Tech Online

Electric Heating Equipment
Electric Heating Equipment

... electric heat applications (their lower internal resistance offers cooler operation than ordinary fuses). T-Tron fast-acting fuses (JJN and JJS) in the sizes required above provide protection for electric heat applications and offer small physical size to reduce space and material cost. ...
CHABOT COLLEGE
CHABOT COLLEGE

... The Fluke 12B is an "autoranging" meter. In most circumstances, it will automatically select the appropriate units or "range" of measurement. However, for the measurement to be meaningful, the user must always note the units of measurement displayed on the screen. The manual for the Fluke 12B is ava ...
PV Cell Fed Step-up Resonant Converter for Induction
PV Cell Fed Step-up Resonant Converter for Induction

... to −Vo/2 andiLr reduces to I2, at t3, the voltage across Q4 B. Mode 2 [t1, t3] [See Fig. 3(b)] At t1, Q1 and Q4 are turned off and after that Lr resonates reaches Vo/2 andthe voltage across Db2 reaches Vo/2 − with Cr, vC r decreases from Vin, and iLr increases from I1 Vin.It can be seen that during ...
university of california at berkeley
university of california at berkeley

... Instruction For this lab, you may consult the professor, the TAs, the textbook, and any other inanimate objects, with the exception of your peers' lab reports, for reference. You may obtain data in pairs, but must submit your own written report. Be concise. ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,

... harmonic currents off the line or to block their flow between parts of the system by tuning the elements to create a resonance at a selected harmonic frequency [2]. The second technology use switching circuits controlled actively. Some of active technologies based on harmonics-injection techniques a ...
Electrical Circuit Calculations
Electrical Circuit Calculations

... The third type of circuit was the series parallel one in which some resistors are connected in series with parallel banks of resistors. In the series/parallel circuit the things to be remembered are: A The total resistance of the circuit is the sum of the resistors in series plus the equivalent resi ...
Section G3: Differential Amplifiers
Section G3: Differential Amplifiers

... 9.3b of your text are not the same as indicated in Figure 9.3a. Also, the iTH of Figure 9.3b is the same current as iEE in Figure 9.3a (i.e., the collector current of Q3). With all this in mind, the circuit to the right is the small signal equivalent of the current source (with the base, collector a ...
pract elec rev book - Deans Community High School
pract elec rev book - Deans Community High School

... In some situations a wire may have broken. If this break is inside the insulation on a flex then you will not be able to see it. This type of fault is known as an open circuit. It would be useful to have some device that would allow us to test if the fault is simple like the two mentioned above, or ...
TL783C, TL783Y HIGH-VOLTAGE ADJUSTABLE REGULATOR
TL783C, TL783Y HIGH-VOLTAGE ADJUSTABLE REGULATOR

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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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