ALLGUY Eye-sense
... optical filter to provide a response which is close to the human eye, or “photopic”. The output current can be converted to a voltage by connecting it in series with a resistor. The dynamic range is determined by the external resistor and power supply (10K and 5V gives a range of 0 to over 2500 Lux, ...
... optical filter to provide a response which is close to the human eye, or “photopic”. The output current can be converted to a voltage by connecting it in series with a resistor. The dynamic range is determined by the external resistor and power supply (10K and 5V gives a range of 0 to over 2500 Lux, ...
Sample Paper – 2011 Class: XII Subject: Physics
... describe the method to determine the specific resistance of a wire in the laboratory. Draw the circuit diagram and write the formula used. Q.24 With the help of a circuit diagram, explain how an n-p-n transistor can be used as an amplifier in common emitter configuration. Explain how the input and o ...
... describe the method to determine the specific resistance of a wire in the laboratory. Draw the circuit diagram and write the formula used. Q.24 With the help of a circuit diagram, explain how an n-p-n transistor can be used as an amplifier in common emitter configuration. Explain how the input and o ...
PPT - LSU Physics & Astronomy
... If one connects resistors of lower and lower value of R to get higher and higher currents, eventually a real battery fails to establish the potential difference E, and settles for a lower value. One can represent a “real EMF device” as an ideal one attached to a resistor, called “internal resistance ...
... If one connects resistors of lower and lower value of R to get higher and higher currents, eventually a real battery fails to establish the potential difference E, and settles for a lower value. One can represent a “real EMF device” as an ideal one attached to a resistor, called “internal resistance ...
Wind Energy Unit EEE www.edibon.com Technical Teaching Equipment
... The Wind Energy Unit “EEE” contains an aerogenerator, in laboratory-scale, and is used to study the conversion of kinetic wind energy into electrical energy and to study the influence of some factors on this generation. The unit consists of a stainless steel tunnel, an aerogenerator and an axial fan ...
... The Wind Energy Unit “EEE” contains an aerogenerator, in laboratory-scale, and is used to study the conversion of kinetic wind energy into electrical energy and to study the influence of some factors on this generation. The unit consists of a stainless steel tunnel, an aerogenerator and an axial fan ...
23751 Demonstrate knowledge of electrical calculations and
... The relationship between resistance, voltage, and current is described in terms of the effect that a change in any one quantity has on the other two. ...
... The relationship between resistance, voltage, and current is described in terms of the effect that a change in any one quantity has on the other two. ...
datasheet
... The SFH250 is a low-cost 650nm receiver diode for simple optical data transmission with polymer optical fiber. It incorporates an analog photodiode and can be used for speeds up to 100MBd. ...
... The SFH250 is a low-cost 650nm receiver diode for simple optical data transmission with polymer optical fiber. It incorporates an analog photodiode and can be used for speeds up to 100MBd. ...
Appendix 1: Comparison Matrix of the Spider-81 Series
... The Spider-81C is a vibration control system designed for fail-safe operation even in the event of network or power loss. Advanced safety routines allow sensor failures to be detected within milliseconds. All Spider hardware passes strict environmental tests including EMI, temperature, drop shock, s ...
... The Spider-81C is a vibration control system designed for fail-safe operation even in the event of network or power loss. Advanced safety routines allow sensor failures to be detected within milliseconds. All Spider hardware passes strict environmental tests including EMI, temperature, drop shock, s ...
n CMOS Low Power Consumption
... The ramp wave generator generates a saw-tooth waveform based on outputs from the OSC generator.
The PWM comparator compares outputs from the error amp. and saw-tooth waveform. When the voltage from the Error
amp's output is low, the external switch will be set to ON.
... The ramp wave generator generates a saw-tooth waveform based on outputs from the OSC generator.
XC9106/XC9107Series
... The ramp wave generator generates a saw-tooth waveform based on outputs from the OSC generator.
The PWM comparator compares outputs from the error amp. and saw-tooth waveform. When the voltage from the Error
amp's output is low, the external switch will be set to ON.
... The ramp wave generator generates a saw-tooth waveform based on outputs from the OSC generator.
2SD1047
... Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST tr ...
... Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST tr ...
phys202 – spring 2009
... Batteries • A battery is a device that provides a potential difference to two terminals. • Different metals in an electrolyte will create a potential difference, and maintain the difference so long as the load on the battery is not to large. • Chemical potential energy is converted to electric po ...
... Batteries • A battery is a device that provides a potential difference to two terminals. • Different metals in an electrolyte will create a potential difference, and maintain the difference so long as the load on the battery is not to large. • Chemical potential energy is converted to electric po ...
9. Capacitor and Resistor Circuits
... So the frequency f=1,470 Hz= 1.5 kHz corresponds to one time constant t. The horizontal time scale of the oscilloscope had better be something like this frequency f. If the oscilloscope is set at too high a frequency, the time will be too short to see the voltage rise. On the other hand, if the osci ...
... So the frequency f=1,470 Hz= 1.5 kHz corresponds to one time constant t. The horizontal time scale of the oscilloscope had better be something like this frequency f. If the oscilloscope is set at too high a frequency, the time will be too short to see the voltage rise. On the other hand, if the osci ...
EC notes - Emanthra.com
... consists of two conducting plates separated by an insulating material, The insulating material is known as dielectric. Capacitance is measured by the ability of capacitor to store charge. Capacitance is measured in farads (F). Practical capacitors are measured in microfarads (µF) and picofarads (p ...
... consists of two conducting plates separated by an insulating material, The insulating material is known as dielectric. Capacitance is measured by the ability of capacitor to store charge. Capacitance is measured in farads (F). Practical capacitors are measured in microfarads (µF) and picofarads (p ...
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.