ADM202 数据手册DataSheet 下载
... to solve interface problems by meeting the EIA-232E specifications while using a single digital 5 V supply. The EIA standard requires transmitters that will deliver ± 5 V minimum on the transmission channel and receivers that can accept signal levels down to ± 3 V. The parts achieve this by integrat ...
... to solve interface problems by meeting the EIA-232E specifications while using a single digital 5 V supply. The EIA standard requires transmitters that will deliver ± 5 V minimum on the transmission channel and receivers that can accept signal levels down to ± 3 V. The parts achieve this by integrat ...
ADuM3441 数据手册DataSheet下载
... The ADuM344x1 are four channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology supporting data rates up to 150 Mbps. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superio ...
... The ADuM344x1 are four channel, digital isolators based on the Analog Devices, Inc., iCoupler® technology supporting data rates up to 150 Mbps. Combining high speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superio ...
DS1812 5V EconoReset with Active High Push-Pull Output FEATURES
... status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 150 ms to allow the power ...
... status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 150 ms to allow the power ...
Pdf - Text of NPTEL IIT Video Lectures
... armature current corresponding to I a, the effective filed current will be I f actual equal to O O 1 and a r ampere armature reaction demagnetizing field amperes is m 1 m 2 therefore, the net field ampere is I f net equal to O O 2. The corresponding induced voltage E equal to m O 2 and I a r a equal ...
... armature current corresponding to I a, the effective filed current will be I f actual equal to O O 1 and a r ampere armature reaction demagnetizing field amperes is m 1 m 2 therefore, the net field ampere is I f net equal to O O 2. The corresponding induced voltage E equal to m O 2 and I a r a equal ...
Controlling Analog Output From a Digital CPLD Using PWM
... input. As the name implies, a PWM generates a series of constant voltage or current digital pulses with pulse widths or duty cycles that are proportional to the intended analog strength. The series of modulated pulses can be converted to an analog voltage with a low-pass filter, but this is usually ...
... input. As the name implies, a PWM generates a series of constant voltage or current digital pulses with pulse widths or duty cycles that are proportional to the intended analog strength. The series of modulated pulses can be converted to an analog voltage with a low-pass filter, but this is usually ...
60-V, Bidirectional, Low- or High-Side, Voltage
... The mid-rail offset adjustment pin enables the user to use these devices for bidirectional single supply voltage current sensing. The output signal is bidirectional and mid-rail referenced when this pin is connected to the positive supply rail. With the offset pin connected to ground, the output sig ...
... The mid-rail offset adjustment pin enables the user to use these devices for bidirectional single supply voltage current sensing. The output signal is bidirectional and mid-rail referenced when this pin is connected to the positive supply rail. With the offset pin connected to ground, the output sig ...
Electricity questions: Monitoring and measuring a.c.
... Complete the table by calculating the power in the load for each value of R. Sketch a graph to show how the power in the load resistor R varies with R. In order to achieve maximum transfer of power, what is the relationship between the internal resistance of the power source and the resistance of th ...
... Complete the table by calculating the power in the load for each value of R. Sketch a graph to show how the power in the load resistor R varies with R. In order to achieve maximum transfer of power, what is the relationship between the internal resistance of the power source and the resistance of th ...
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.