2 - 3B Scientific
... majority carriers. This results in a transfer current IT from the emitter into the collector, which is the major contributor to the collector current IC in forward-bias mode. The transistor can therefore be regarded as a voltage controlled current source whereby the IC at the output can be controlle ...
... majority carriers. This results in a transfer current IT from the emitter into the collector, which is the major contributor to the collector current IC in forward-bias mode. The transistor can therefore be regarded as a voltage controlled current source whereby the IC at the output can be controlle ...
ppt - EC - Unit 6 - sine wave -1
... • A VCO is an oscillator circuit in which the frequency can be varied by an applied voltage • This is achieved by “varicap”, whose capacitance varies with applied voltage. • Varicap is used in tank circuit, which determines frequency ...
... • A VCO is an oscillator circuit in which the frequency can be varied by an applied voltage • This is achieved by “varicap”, whose capacitance varies with applied voltage. • Varicap is used in tank circuit, which determines frequency ...
1N458A Small Signal Diode
... 2. A critical component is any component of a life support which, (a) are intended for surgical implant into the body, device or system whose failure to perform can be or (b) support or sustain life, or (c) whose failure to perform reasonably expected to cause the failure of the life support when pr ...
... 2. A critical component is any component of a life support which, (a) are intended for surgical implant into the body, device or system whose failure to perform can be or (b) support or sustain life, or (c) whose failure to perform reasonably expected to cause the failure of the life support when pr ...
MAX5052/MAX5053 Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies
... Detailed Description The MAX5052/MAX5053 are current-mode PWM controllers that have been specifically designed for use in isolated and nonisolated power-supply applications. A bootstrap UVLO with a large hysteresis (11.9V), very low startup current, and low operating current result in efficient univ ...
... Detailed Description The MAX5052/MAX5053 are current-mode PWM controllers that have been specifically designed for use in isolated and nonisolated power-supply applications. A bootstrap UVLO with a large hysteresis (11.9V), very low startup current, and low operating current result in efficient univ ...
DRV135 数据资料 dataSheet 下载
... The DRV134 has excellent distortion characteristics. As shown in the distortion data provided in the typical performance curves, THD+Noise is below 0.003% throughout the audio frequency range under various output conditions. Both differential and single-ended modes of operation are shown. In additio ...
... The DRV134 has excellent distortion characteristics. As shown in the distortion data provided in the typical performance curves, THD+Noise is below 0.003% throughout the audio frequency range under various output conditions. Both differential and single-ended modes of operation are shown. In additio ...
Carbon nanotubes Field effect transistors are the
... Aggressive scaling of CMOS technology has resulted into increased shorts channels effects which includes rise in leakage current and surface scattering, high power density and a lesser gate control. Some of these constraints can be overcome up to a certain range and can also help in facilitating the ...
... Aggressive scaling of CMOS technology has resulted into increased shorts channels effects which includes rise in leakage current and surface scattering, high power density and a lesser gate control. Some of these constraints can be overcome up to a certain range and can also help in facilitating the ...
LMX2216 - Texas Instruments
... The LNA input and output ports are designed to interface to a 50X system. The Mixer input ports are matched to 50X. The output port is matched to 200X. The only external components required are DC blocking capacitors. The balanced architecture of the LMX2216 maintains consistent operating parameters ...
... The LNA input and output ports are designed to interface to a 50X system. The Mixer input ports are matched to 50X. The output port is matched to 200X. The only external components required are DC blocking capacitors. The balanced architecture of the LMX2216 maintains consistent operating parameters ...
Monitoring & Feedback Control
... • Changes total available current based on voltage changes • Does not compensate correctly for change in sec Resistance or Impedance • Usually has current pick up coil to alarm problems Androvich “Resistance Welding Constant Current Heat Control”, AWS Sheet Metal ConfV, 1992 ...
... • Changes total available current based on voltage changes • Does not compensate correctly for change in sec Resistance or Impedance • Usually has current pick up coil to alarm problems Androvich “Resistance Welding Constant Current Heat Control”, AWS Sheet Metal ConfV, 1992 ...
Assessment for fundamentals of electricity ( 20 points) True or False
... (1 point) A battery creates voltage from a _______________ reaction 1. nuclear 2. chemical - correct 3. thermal 4. combustive Multiple Choice (1 point) What is the amount of voltage if the current in a DC circuit is 24Ω and it draws 5 amps ...
... (1 point) A battery creates voltage from a _______________ reaction 1. nuclear 2. chemical - correct 3. thermal 4. combustive Multiple Choice (1 point) What is the amount of voltage if the current in a DC circuit is 24Ω and it draws 5 amps ...
electronic components - Crompton Instruments
... of rise of voltage with respect to time. A triac can be switched into conduction by a large dV/dt. Typical applications are in phase control, inverter design, AC switching, relay replacement, etc. UNIJUNCTION TRANSISTOR The unijunction transistor(UJT) is a three terminal device with characteristics ...
... of rise of voltage with respect to time. A triac can be switched into conduction by a large dV/dt. Typical applications are in phase control, inverter design, AC switching, relay replacement, etc. UNIJUNCTION TRANSISTOR The unijunction transistor(UJT) is a three terminal device with characteristics ...
Peak Current Mode and Continuous Current Mode
... ASSM parameters as shown in Table 1, row 2. The output capacitor’s dc bias spec drops about 30% at 3.3 V, so in the simplified ASSM simulation the output capacitor value has been changed to 100 μF, not the 147 μF in the evaluation board. ...
... ASSM parameters as shown in Table 1, row 2. The output capacitor’s dc bias spec drops about 30% at 3.3 V, so in the simplified ASSM simulation the output capacitor value has been changed to 100 μF, not the 147 μF in the evaluation board. ...
050 Electronic Tuning Fork Example Project
... therefore assumed that the tolerances in the resistors and capacitor were causing this problem. I decided to experiment changing the resistor values and found that a value for RA of 1kΩ and RB of 22kΩ, gave me a frequency of 332Hz. While this is not exactly the value that I wanted, it is near enough ...
... therefore assumed that the tolerances in the resistors and capacitor were causing this problem. I decided to experiment changing the resistor values and found that a value for RA of 1kΩ and RB of 22kΩ, gave me a frequency of 332Hz. While this is not exactly the value that I wanted, it is near enough ...
60- and 120-watt Power Supplies with trigger circuits
... are designed to o operate the h high power sh hort arc and linear type Xe non hlamps. Theyy are well regu ulated and haave low ripple e output flash charracteristics. TThe wide rangge of output vvoltages makke these poweer supp plies ideal forr applicationss requiring sevveral levels of flashlam ...
... are designed to o operate the h high power sh hort arc and linear type Xe non hlamps. Theyy are well regu ulated and haave low ripple e output flash charracteristics. TThe wide rangge of output vvoltages makke these poweer supp plies ideal forr applicationss requiring sevveral levels of flashlam ...
This Specification Data Sheet brought to you by
... is a self-contained test set that incorporates a variable high-current output and appropriate control circuitry and instrumentation for testing thermal, magnetic or solid-state motor overload relays; molded-case circuit breakers; and ground-fault trip devices. APPLICATIONS Model MS-2 is capable of t ...
... is a self-contained test set that incorporates a variable high-current output and appropriate control circuitry and instrumentation for testing thermal, magnetic or solid-state motor overload relays; molded-case circuit breakers; and ground-fault trip devices. APPLICATIONS Model MS-2 is capable of t ...
Open and View the Book - Ultrasound Physics Exam
... clutter is classified as noise but the signal from clutter and other noise sources are distinctly _______ different in electrical interference, the transducer receives energy from other ________ devices or electromagnetic waves such as radio transmission electrical the electrical interference can be ...
... clutter is classified as noise but the signal from clutter and other noise sources are distinctly _______ different in electrical interference, the transducer receives energy from other ________ devices or electromagnetic waves such as radio transmission electrical the electrical interference can be ...
Retarding Field Energy Analyzer Measurements of Ion Velocity
... are created by applying variable voltages between parallel fine mesh screens through which the particles travel. Particles with sufficient energy to overcome the retarding fields are collected on a flat plate and measured as a current. As the retarding field is increased the collected current decrea ...
... are created by applying variable voltages between parallel fine mesh screens through which the particles travel. Particles with sufficient energy to overcome the retarding fields are collected on a flat plate and measured as a current. As the retarding field is increased the collected current decrea ...
ZAPI MX manual
... respect to the mechanical "zero" of the knob of one handle (MI and MA indicate the point at which the speed microswitches close, 0 is the mechanical zero of the handle rotation).The first graph shows the correspondence of the motor voltage without having made the acquisition, while the second graph ...
... respect to the mechanical "zero" of the knob of one handle (MI and MA indicate the point at which the speed microswitches close, 0 is the mechanical zero of the handle rotation).The first graph shows the correspondence of the motor voltage without having made the acquisition, while the second graph ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.