Week 1 - DCU School of Computing
... Getting a charge to go from A to B is all very well, but the capacitance of B is typically so small that only a very small charge will be involved. It’s more interesting to get the charge to move around in a circuit. This current may be driven by a chemical reaction in part of the circuit (a battery ...
... Getting a charge to go from A to B is all very well, but the capacitance of B is typically so small that only a very small charge will be involved. It’s more interesting to get the charge to move around in a circuit. This current may be driven by a chemical reaction in part of the circuit (a battery ...
The Typical Op-Amp
... by the lateral pnp transistors, Q3 and Q4. As we will discuss in later sections, using the common-base configuration (which has a good high frequency response) compensates for the poor high frequency performance of the lateral pnp transistors so that the overall op-amp frequency response is not seri ...
... by the lateral pnp transistors, Q3 and Q4. As we will discuss in later sections, using the common-base configuration (which has a good high frequency response) compensates for the poor high frequency performance of the lateral pnp transistors so that the overall op-amp frequency response is not seri ...
Safe isolation procedures
... With a wide range of voltage detectors and indicators available, we look at what the requirements are and the reasons why some equipment, such as multimeters, should not be used for this process. It’s also important to be aware of the changes to the standards for two pole voltage indicators which be ...
... With a wide range of voltage detectors and indicators available, we look at what the requirements are and the reasons why some equipment, such as multimeters, should not be used for this process. It’s also important to be aware of the changes to the standards for two pole voltage indicators which be ...
Robinair - Electronic Leak Detector
... One-Hand Operation – The 16” gooseneck probe holds its position so you can operate the detector with one hand. ...
... One-Hand Operation – The 16” gooseneck probe holds its position so you can operate the detector with one hand. ...
PDF File
... bridge arrangement, but they are relatively expensive and its signal has to be amplified before going to A/D converter Tokheim (1990). The high cost and the need of a signal conditioner induced the proposition of a low cost load cell to biomechanical applications. There are several utilizations of l ...
... bridge arrangement, but they are relatively expensive and its signal has to be amplified before going to A/D converter Tokheim (1990). The high cost and the need of a signal conditioner induced the proposition of a low cost load cell to biomechanical applications. There are several utilizations of l ...
SGA-3286 Product Description DC-5000 MHz, Cascadable SiGe HBT MMIC Amplifier
... micron emitters provides high F T and excellent thermal perfomance. The heterojunction increases breakdown voltage and minimizes leakage current between junctions. Cancellation of emitter junction non-linearities results in higher suppression of intermodulation products. At 850 Mhz and 35mA , the SG ...
... micron emitters provides high F T and excellent thermal perfomance. The heterojunction increases breakdown voltage and minimizes leakage current between junctions. Cancellation of emitter junction non-linearities results in higher suppression of intermodulation products. At 850 Mhz and 35mA , the SG ...
ppt - plutonium
... 26.5 DC Ammeters and Voltmeters Application #17: Suppose you are testing an electronic circuit which has two resistors, R1 and R2, each 15k, connected in series as shown. The battery maintains 8.0 V across them and has negligible internal resistance. A voltmeter whose sensitivity is 10,000 /V is ...
... 26.5 DC Ammeters and Voltmeters Application #17: Suppose you are testing an electronic circuit which has two resistors, R1 and R2, each 15k, connected in series as shown. The battery maintains 8.0 V across them and has negligible internal resistance. A voltmeter whose sensitivity is 10,000 /V is ...
AN1348
... - The common mode voltage VCM for the receiver, defined as the algebraic mean of the two localground-referenced voltage: VCM=(VA+VB)/2. This parameter is from -7V to +12V for RS-485 standard. VCM enables different ground-referenced devices to work correctly and allowing ground difference up to ±7V. ...
... - The common mode voltage VCM for the receiver, defined as the algebraic mean of the two localground-referenced voltage: VCM=(VA+VB)/2. This parameter is from -7V to +12V for RS-485 standard. VCM enables different ground-referenced devices to work correctly and allowing ground difference up to ±7V. ...
I-V curves (KL)
... for higher voltages. This occurs when the cloud of thermally activated electrons at the cathode is depleted. If the rate of thermal excitation at the cathode is increased, e.g. through a higher heating temperature, the plateau would be reached at a higher voltage V , with a higher current flowing th ...
... for higher voltages. This occurs when the cloud of thermally activated electrons at the cathode is depleted. If the rate of thermal excitation at the cathode is increased, e.g. through a higher heating temperature, the plateau would be reached at a higher voltage V , with a higher current flowing th ...
Data Sheet (current)
... Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground unless otherwise specified. Note 3: All typicals are given for: VCC = +5.0V, TA = +25˚C. Note 4: Generator waveform for all tests unless otherwise specifi ...
... Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground unless otherwise specified. Note 3: All typicals are given for: VCC = +5.0V, TA = +25˚C. Note 4: Generator waveform for all tests unless otherwise specifi ...
Lecture 6
... Recalling that the output impedance seen by the load of the elementary CE amplifier Ro(RC)=ro>>hie, and the output impedance seen by the load of the elementary CB amplifier is by a two orders of magnitude higher than ro when the input source impedance rs>>hie, we simply use the CE amplifier as a sig ...
... Recalling that the output impedance seen by the load of the elementary CE amplifier Ro(RC)=ro>>hie, and the output impedance seen by the load of the elementary CB amplifier is by a two orders of magnitude higher than ro when the input source impedance rs>>hie, we simply use the CE amplifier as a sig ...
Micro Single Channel Output Units
... micro interface, incorporating integral short circuit isolators. It is extremely compact and therefore ideal for incorporation into other equipment. The (MCOM) is fully compatible with the current range of Cooper intelligent addressable control panels. It is suitable for switching low voltage (24V d ...
... micro interface, incorporating integral short circuit isolators. It is extremely compact and therefore ideal for incorporation into other equipment. The (MCOM) is fully compatible with the current range of Cooper intelligent addressable control panels. It is suitable for switching low voltage (24V d ...
Measurements International - AMTEST-PL
... The principle of the 6000B Automatic Potentiometer is based on the Binary Voltage Divider (BVD). The reference to the BVD is supplied from a stable voltage reference, Model 1000A. The Model 1000A is a low drift, stable, noise free 100-Volt Source. The 100V reference is connected to the rear of the ...
... The principle of the 6000B Automatic Potentiometer is based on the Binary Voltage Divider (BVD). The reference to the BVD is supplied from a stable voltage reference, Model 1000A. The Model 1000A is a low drift, stable, noise free 100-Volt Source. The 100V reference is connected to the rear of the ...
Lecture 2
... In the case of tunnel diode the current i is a single valued function of the voltage v; consequently we can write i=f(v). Such a resistor is said to be voltage-controlled. On the other hand in the characteristic of gas tube the voltage v is a single valued function of the current i and we can write ...
... In the case of tunnel diode the current i is a single valued function of the voltage v; consequently we can write i=f(v). Such a resistor is said to be voltage-controlled. On the other hand in the characteristic of gas tube the voltage v is a single valued function of the current i and we can write ...
Part 2
... • Semiconductors have a much higher • Semiconductors temperature coefficient of resistivity is large and negative • In conductors n is large but nearly constant. As T increases, v increases and t decreases > o • In semiconductors t still decreases but n starts out small and increases fast wit ...
... • Semiconductors have a much higher • Semiconductors temperature coefficient of resistivity is large and negative • In conductors n is large but nearly constant. As T increases, v increases and t decreases > o • In semiconductors t still decreases but n starts out small and increases fast wit ...
Franco’s Finest: MGA62563 ultra low noise amplifier 1.0
... Figs 1 and 2 there is the broadband and expanded low frequency band graph in order to show it at lower frequencies, the noise figure remains lower than 1dB up to 2GHz (typically 0.9dB) and 1.1dB @ 2.5GHz. The associated gain is appropriate for applications from 30MHz to 2.6GHz, see table 1. This is ...
... Figs 1 and 2 there is the broadband and expanded low frequency band graph in order to show it at lower frequencies, the noise figure remains lower than 1dB up to 2GHz (typically 0.9dB) and 1.1dB @ 2.5GHz. The associated gain is appropriate for applications from 30MHz to 2.6GHz, see table 1. This is ...
“Fuzzy Logic Speed Controllers Using FPGA Technique For Three
... – provides electrical isolation between power switch and logic level Complexity of driver varies markedly among switches. MOSFET/IGBT drivers are simple but GTO drivers are very complicated and expensive. ...
... – provides electrical isolation between power switch and logic level Complexity of driver varies markedly among switches. MOSFET/IGBT drivers are simple but GTO drivers are very complicated and expensive. ...
Electric charges - Churchill High School
... buildup of _________________. • The cloud, air, and ground can act like a _______________. • All the accumulated ___________ __________ flow from the cloud to the ground, _______________ along the path (to as much as __________°C) so that it glows like a bright streak of light. ...
... buildup of _________________. • The cloud, air, and ground can act like a _______________. • All the accumulated ___________ __________ flow from the cloud to the ground, _______________ along the path (to as much as __________°C) so that it glows like a bright streak of light. ...
Schmitt Trigger, Decoders – Page 1 Schmitt Trigger Inputs, Decoders TTL Switching
... source that is unusual for logic circuits, an offset sine wave from an oscillator. Experiment 1: Setup the function generator as in Figure 1 to make a sine signal that is offset positively, with a maximum output not greater than 5 volts. The goal is to obtain a voltage that swings from a value near ...
... source that is unusual for logic circuits, an offset sine wave from an oscillator. Experiment 1: Setup the function generator as in Figure 1 to make a sine signal that is offset positively, with a maximum output not greater than 5 volts. The goal is to obtain a voltage that swings from a value near ...
Medium Voltage Switchgear Condition Assessments
... with the medium voltage switchgear in operation to evaluate the external condition, to measure values of built-in indicators and to identify ageing factors, as well as malfunction of operating mechanisms, secondary system, etc. Actual personal Safety regulations have to be observed strictly during ...
... with the medium voltage switchgear in operation to evaluate the external condition, to measure values of built-in indicators and to identify ageing factors, as well as malfunction of operating mechanisms, secondary system, etc. Actual personal Safety regulations have to be observed strictly during ...
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.