Sample Paper – 2010 Class – XII
... 29. A straight thick long wire of uniform cross section of radius ‘a’ is carrying a steady current I. Use Ampere’s circuital law to obtain a relation showing the variation of the magnetic field inside and outside the wire with distance r, (r a) and (r > a) of the field point from the centre of its ...
... 29. A straight thick long wire of uniform cross section of radius ‘a’ is carrying a steady current I. Use Ampere’s circuital law to obtain a relation showing the variation of the magnetic field inside and outside the wire with distance r, (r a) and (r > a) of the field point from the centre of its ...
SECTION 611 (Pages731 – 736) is deleted and the following... 611 ACCEPTANCE PROCEDURES FOR TRAFFIC CONTROL SIGNALS AND
... Continuity: Test each signal head circuit, pedestrian detector circuit, vehicle detector loop circuit, and interconnect signal circuit for continuity. Functional: Perform a functional test that demonstrates that each and every part of the installation functions as specified. Induced Voltage on traff ...
... Continuity: Test each signal head circuit, pedestrian detector circuit, vehicle detector loop circuit, and interconnect signal circuit for continuity. Functional: Perform a functional test that demonstrates that each and every part of the installation functions as specified. Induced Voltage on traff ...
KD-10 (0.75 – 21.0 ohm)
... two-phase-to-ground faults, and three-phase faults within the reach setting and sensitivity level of the relay. Figure 3 show an internal schematic of the medium reach (0.75 – 21.0 ohm) relay. The component most likely to fail in a KD relay is the C3C capacitor. Failure is caused by voltage stress i ...
... two-phase-to-ground faults, and three-phase faults within the reach setting and sensitivity level of the relay. Figure 3 show an internal schematic of the medium reach (0.75 – 21.0 ohm) relay. The component most likely to fail in a KD relay is the C3C capacitor. Failure is caused by voltage stress i ...
Teaching Computer Control using Cause and Effect Relationships
... ause. It does, however have its limitations especially when chart showing all the relevant pin voltages at the Breakout Box. The Breakout Box is conveniently located on the front panel of the EM-330-1. It connects to all the ECM pins in use. There are some lab dealing with circuits that have varyi ...
... ause. It does, however have its limitations especially when chart showing all the relevant pin voltages at the Breakout Box. The Breakout Box is conveniently located on the front panel of the EM-330-1. It connects to all the ECM pins in use. There are some lab dealing with circuits that have varyi ...
Protecting Silicon Laboratories ProSLIC® Family with Bourns
... sheet. The overcurrent protection solution must not open under the first level AC power contact tests while failing safely under the second level tests. The B1250T specifies the clearing time under the key AC current test conditions. It is considered good design practice to ensure the overcurrent p ...
... sheet. The overcurrent protection solution must not open under the first level AC power contact tests while failing safely under the second level tests. The B1250T specifies the clearing time under the key AC current test conditions. It is considered good design practice to ensure the overcurrent p ...
ADM2914 数据手册DataSheet 下载
... negative voltages. This pin can source or sink 1 mA, and drive loads up to 1 nF. Larger capacitive loads may lead to instability. Leave unconnected when not in use. Overvoltage Reset Output. OV is asserted low if a negative polarity input voltage drops below its associated threshold or if a positive ...
... negative voltages. This pin can source or sink 1 mA, and drive loads up to 1 nF. Larger capacitive loads may lead to instability. Leave unconnected when not in use. Overvoltage Reset Output. OV is asserted low if a negative polarity input voltage drops below its associated threshold or if a positive ...
ELECTRICAL MEASUREMENTS LAB
... Connect the circuit as shown in the figure. Select the value of R2. Vary R3 from minimum position in clockwise direction. If the selection of R2 is correct, the balance point is observed at minimum voltage, for a particular R1 and then increases by varying R3 in the same clockwise direction. If that ...
... Connect the circuit as shown in the figure. Select the value of R2. Vary R3 from minimum position in clockwise direction. If the selection of R2 is correct, the balance point is observed at minimum voltage, for a particular R1 and then increases by varying R3 in the same clockwise direction. If that ...
frequency and phase modulation
... • Advantages of FM using Varactor Diode – • 1. High frequency stability as crystal oscillator is isolated from modulator. • Disadvantages – • 1. To avoid distortion, the amplitude of modulating signal is to be kept small. • 2. The varactor diode must have non linear characteristics of capacitance v ...
... • Advantages of FM using Varactor Diode – • 1. High frequency stability as crystal oscillator is isolated from modulator. • Disadvantages – • 1. To avoid distortion, the amplitude of modulating signal is to be kept small. • 2. The varactor diode must have non linear characteristics of capacitance v ...
MAX3120 Low-Profile, 3V, 120µA, IrDA Infrared Transceiver General Description
... Because of its low-noise design, the MAX3120 achieves a bit error rate (BER) below 10-8 at maximum data rates when used with the appropriate external components. On-chip filtering rejects out-of-band ambient light signals that would otherwise interfere with IR communication. Also included in the MAX ...
... Because of its low-noise design, the MAX3120 achieves a bit error rate (BER) below 10-8 at maximum data rates when used with the appropriate external components. On-chip filtering rejects out-of-band ambient light signals that would otherwise interfere with IR communication. Also included in the MAX ...
MOC256M AC Input Phototransistor Small Outline Surface Mount Optocouplers
... The MOC256M is an AC input phototransistor optocoupler. The device consists of two infrared emitters connected in anti-parallel and coupled to a silicon NPN phototransistor detector. It is designed for applications requiring the detection or monitoring of AC signals. The device is constructed with a ...
... The MOC256M is an AC input phototransistor optocoupler. The device consists of two infrared emitters connected in anti-parallel and coupled to a silicon NPN phototransistor detector. It is designed for applications requiring the detection or monitoring of AC signals. The device is constructed with a ...
Using ADS8411 in a Multiplexed Analog Input Application (slaa285a.HTM, 8 KB)
... enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products ...
... enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products ...
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 1
... coefficient and load. However PP compensation topology was adopted in their work because parallel compensated transmitter could provide a large current and parallel compensated receiver had the current source characteristic which was more suitable for battery charging. This is correct when the syste ...
... coefficient and load. However PP compensation topology was adopted in their work because parallel compensated transmitter could provide a large current and parallel compensated receiver had the current source characteristic which was more suitable for battery charging. This is correct when the syste ...
Optimal signal-to-noise ratio for silicon nanowire biochemical sensors
... Similar and consistent results were obtained for measurements carried out at different pH values, which show that the charge state of the NW surface (due to different solution pH) does not have a significant impact on the noise properties or SNR. The I-V curves show the expected threshold voltage sh ...
... Similar and consistent results were obtained for measurements carried out at different pH values, which show that the charge state of the NW surface (due to different solution pH) does not have a significant impact on the noise properties or SNR. The I-V curves show the expected threshold voltage sh ...
LM5023 AC-DC Quasi-Resonant Current Mode
... features needed to implement a highly efficient offline power supply. The LM5023 uses the transformer auxiliary winding for demagnetization detection to ensure critical conduction mode (CrCM) operation. The LM5023 features a hiccup mode for overcurrent protection with an auto restart to reduce the s ...
... features needed to implement a highly efficient offline power supply. The LM5023 uses the transformer auxiliary winding for demagnetization detection to ensure critical conduction mode (CrCM) operation. The LM5023 features a hiccup mode for overcurrent protection with an auto restart to reduce the s ...
PL-2303 USB to RS-232 Bridge Controller Product
... large on-chip buffers accommodate data flow from two different buses. The USB bulk-type data is adopted for maximum data transfer. Automatic handshake is supported at the Serial port. With these, a much higher baud rate can be achieved compared to the legacy UART controller. This device is also comp ...
... large on-chip buffers accommodate data flow from two different buses. The USB bulk-type data is adopted for maximum data transfer. Automatic handshake is supported at the Serial port. With these, a much higher baud rate can be achieved compared to the legacy UART controller. This device is also comp ...
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.