Principles of oximetry
... It can be seen from the block diagram in Figure 6 that the output from each sample-and-hold is also passed to a low-pass filter. This is the first stage of an automatic gain control (AGC) circuit that adjusts the light intensity from the corresponding LED so ...
... It can be seen from the block diagram in Figure 6 that the output from each sample-and-hold is also passed to a low-pass filter. This is the first stage of an automatic gain control (AGC) circuit that adjusts the light intensity from the corresponding LED so ...
Lecture4
... where the currents are small, for example in an audio amplifier circuit • The 400x is designed for abuse and is a good choice in power-supply applications • There are lots of other diodes available on the market; this discussion is just intended to make you aware that diode selection involves a numb ...
... where the currents are small, for example in an audio amplifier circuit • The 400x is designed for abuse and is a good choice in power-supply applications • There are lots of other diodes available on the market; this discussion is just intended to make you aware that diode selection involves a numb ...
Dimming Presentation
... Professional dimming has come a long way from the candle snuffers of the 18th century to the gas tables of the 19th century and resistance dimmers of the early 20th century. Forward phase dimming with SCR technology has reigned over conventional loads since the early 1960s and is still today the m ...
... Professional dimming has come a long way from the candle snuffers of the 18th century to the gas tables of the 19th century and resistance dimmers of the early 20th century. Forward phase dimming with SCR technology has reigned over conventional loads since the early 1960s and is still today the m ...
13208A 23208A Uniaxial Biaxial
... The Measurement Specialties 13208A and 23208A accelerometers include a temperature sensor in their small, rugged package. The small size and built-in power regulation allow the 13208A and 23208A to fit where other accelerometers can’t. Choose the bandwidth and range options best suited for your appl ...
... The Measurement Specialties 13208A and 23208A accelerometers include a temperature sensor in their small, rugged package. The small size and built-in power regulation allow the 13208A and 23208A to fit where other accelerometers can’t. Choose the bandwidth and range options best suited for your appl ...
MAX6969 16-Port, 5.5V Constant-Current LED Driver General Description Features
... For applications requiring LED fault detection, refer to the MAX6984*, which automatically detects open-circuit LEDs. For safety-related applications requiring a watchdog timer, refer to the MAX6979, which includes a fail-safe feature that blanks the display if the serial interface becomes inactive ...
... For applications requiring LED fault detection, refer to the MAX6984*, which automatically detects open-circuit LEDs. For safety-related applications requiring a watchdog timer, refer to the MAX6979, which includes a fail-safe feature that blanks the display if the serial interface becomes inactive ...
Magnetic Buzzer
... the regular operation. However, it normally takes three times of current at the moment of starting to work. Direct Current Resistance: The direct current resistance is measured by ammeter directly. Sound Output: The sound output is measured by decibel meter. Applying rated voltage and 1/2 square wav ...
... the regular operation. However, it normally takes three times of current at the moment of starting to work. Direct Current Resistance: The direct current resistance is measured by ammeter directly. Sound Output: The sound output is measured by decibel meter. Applying rated voltage and 1/2 square wav ...
Application Note: AN-114 ITC117P Integrated Telecom Circuit
... Hookswitch The ITC contains optically-coupled MOSFETs that function as a hookswitch in the DAA circuit. The hookswitch has a blocking voltage up to 350V, isolation voltage to 3750VRMS, 15Ω RDS(on), and a maximum switching current of 120mA, making it ideal for Tip and Ring switching. The hookswitch i ...
... Hookswitch The ITC contains optically-coupled MOSFETs that function as a hookswitch in the DAA circuit. The hookswitch has a blocking voltage up to 350V, isolation voltage to 3750VRMS, 15Ω RDS(on), and a maximum switching current of 120mA, making it ideal for Tip and Ring switching. The hookswitch i ...
Experiment No. 1 Study of Separately
... A dc Motor/Generator can run either as a motor or as a generator. A motor converts electrical power into mechanical power while a generator converts mechanical power into electrical power. A generator must, therefore, be mechanically driven in order to produce electricity. Since the field winding is ...
... A dc Motor/Generator can run either as a motor or as a generator. A motor converts electrical power into mechanical power while a generator converts mechanical power into electrical power. A generator must, therefore, be mechanically driven in order to produce electricity. Since the field winding is ...
AD8251 数据手册DataSheet 下载
... The AD8251 is an instrumentation amplifier with digitally programmable gains that has GΩ input impedance, low output noise, and low distortion, making it suitable for interfacing with sensors and driving high sample rate analog-to-digital converters (ADCs). It has a high bandwidth of 10 MHz, low THD ...
... The AD8251 is an instrumentation amplifier with digitally programmable gains that has GΩ input impedance, low output noise, and low distortion, making it suitable for interfacing with sensors and driving high sample rate analog-to-digital converters (ADCs). It has a high bandwidth of 10 MHz, low THD ...
Nieizotermiczne charakterystyki impulsowych układów zasilających
... In the model of the primary winding the resistor RS1 represents the series resistance of the winding at the reference temperature, the controlled voltage source ERS1 describes resistance changes with the change of temperature TU. The controlled voltage source EV models the voltage induced in the pri ...
... In the model of the primary winding the resistor RS1 represents the series resistance of the winding at the reference temperature, the controlled voltage source ERS1 describes resistance changes with the change of temperature TU. The controlled voltage source EV models the voltage induced in the pri ...
Compensation of Negative Sequence Components in an Induction
... do not have any flux linkage capability. Hence short-circuit all resistors, capacitors, voltage sources and those inductors, which are not in the L-i cut set. The reduced network, obtained to simulate the condition at t = 0+, will have only inductors and current sources. Now apply the KCL equation, ...
... do not have any flux linkage capability. Hence short-circuit all resistors, capacitors, voltage sources and those inductors, which are not in the L-i cut set. The reduced network, obtained to simulate the condition at t = 0+, will have only inductors and current sources. Now apply the KCL equation, ...
Tips for Using Single Chip 3 / Digit A/D Converters
... Using an external reference such as the ICL8069, the change in reading can be kept to 2.8 counts maximum. Such an external reference is recommended for the ICL7107 because of the chip heating caused by power dissipation. This power dissipation is due to the LED drivers, and is not a significant fact ...
... Using an external reference such as the ICL8069, the change in reading can be kept to 2.8 counts maximum. Such an external reference is recommended for the ICL7107 because of the chip heating caused by power dissipation. This power dissipation is due to the LED drivers, and is not a significant fact ...
Multilayer Technology Varistor Plus Term Sym bol
... Inductive com ponent of the varistor w hen m easured w ith a current edge rate (di/dt) of 100m A /ns. V alues are typically m easured in nanohenries (nH ). ...
... Inductive com ponent of the varistor w hen m easured w ith a current edge rate (di/dt) of 100m A /ns. V alues are typically m easured in nanohenries (nH ). ...
AN-1131 APPLICATION NOTE
... the current ADC conversion and the previous conversion. If the analog input changed part way through an ADC conversion period, then the current ADC conversion reflects a combination of the old analog input and the new input, and the averaged result is an intermediate value. The next (unaveraged) con ...
... the current ADC conversion and the previous conversion. If the analog input changed part way through an ADC conversion period, then the current ADC conversion reflects a combination of the old analog input and the new input, and the averaged result is an intermediate value. The next (unaveraged) con ...
CMOS Schmitt Trigger Test Circuit
... input. The gates of the feedback transistors are driven to vdd. The input is regulated to the high input threshold voltage VTH. ►Asserting test mode and vil input results in sout being shorted to the input. The gates of the feedback transistors are driven to gnd. The input is regulated to the low th ...
... input. The gates of the feedback transistors are driven to vdd. The input is regulated to the high input threshold voltage VTH. ►Asserting test mode and vil input results in sout being shorted to the input. The gates of the feedback transistors are driven to gnd. The input is regulated to the low th ...
Ohm`s Law - MSU Physics
... Figure 2.4: Schematics of meters being connected in a circuit. voltmeter) or current (as an ammeter), one cable is always connected to the COM plug. If the multimeter is used to measure current, the other lead is connected to either the 10A plug or the 400mA plug. A voltmeter must be connected in pa ...
... Figure 2.4: Schematics of meters being connected in a circuit. voltmeter) or current (as an ammeter), one cable is always connected to the COM plug. If the multimeter is used to measure current, the other lead is connected to either the 10A plug or the 400mA plug. A voltmeter must be connected in pa ...
Evaluates: MAX1760 MAX1760 Evaluation Kit General Description Features
... boost switching-regulator circuit. The EV kit provides a regulated +3.3V output at up to 800mA of current. The input voltage range is +0.7V to +5.5V. However, the output voltage rises above the regulation point for input voltages exceeding 3.3V. A 1- or 2-cell battery input can also be used to power ...
... boost switching-regulator circuit. The EV kit provides a regulated +3.3V output at up to 800mA of current. The input voltage range is +0.7V to +5.5V. However, the output voltage rises above the regulation point for input voltages exceeding 3.3V. A 1- or 2-cell battery input can also be used to power ...
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.