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FEATURES APPLICATIONS DESCRIPTION FUNCTIONAL BLOCK
FEATURES APPLICATIONS DESCRIPTION FUNCTIONAL BLOCK

... Combining high-speed CMOS and monolithic air core transformer technology, these isolation components provide outstanding performance characteristics superior to optocoupler devices. Configured as pin-compatible replacements for existing high-speed optocouplers, the ADuM1100A and ADuM1100B support da ...
EL5128 - Intersil
EL5128 - Intersil

... as short as possible and the power supply pins must be well bypassed to reduce the risk of oscillation. For normal single supply operation, where the VS- pin is connected to ground, a 0.1µF ceramic capacitor should be placed from VS+ to pin to VS- pin. A 4.7µF tantalum capacitor should then be conne ...
Equation 1
Equation 1

... 6. Measure the magnitude of the voltages across the inductor, capacitor and the resistor for the frequencies chosen in Table 1. For all of these measurements adjust the Volts/Div until there is no DC offset to the waveforms and until you can clearly see each sinusoidal waveform (if the sinusoidal wa ...
ADXL202 - Senior Design
ADXL202 - Senior Design

Lab 8 - facstaff.bucknell.edu
Lab 8 - facstaff.bucknell.edu

... voltage is applied to the diff amp between the two input terminals; that is, the input voltage is not referenced to ground but rather “floats” above ground. In the diff amp circuit, a voltage applied across the two input terminals is called a differential input voltage. Similarly, the two output vol ...
SMV-500 - EP
SMV-500 - EP

... spike noise. Also, note that output spike voltage may vary depending on the wiring pattern of the printed circuit board. C16,17: 0.033uF (Ceramic or Film Capacitor): Connect ceramic or film capacitor as EMI/EMS counter measure and to reduce spike noise. Note: High Voltage is applied across this capa ...
SMV-500 - Astrodyne
SMV-500 - Astrodyne

... spike noise. Also, note that output spike voltage may vary depending on the wiring pattern of the printed circuit board. C16,17: 0.033uF (Ceramic or Film Capacitor): Connect ceramic or film capacitor as EMI/EMS counter measure and to reduce spike noise. Note: High Voltage is applied across this capa ...
Combining an Amplifier with the BUF634
Combining an Amplifier with the BUF634

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PFT-301CM 30 kV Portable AC Hipot
PFT-301CM 30 kV Portable AC Hipot

DT3: RF On/Off Remote Control Technology
DT3: RF On/Off Remote Control Technology

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Lab 7 - Ohm`s Law and Resistors in Series and Parallel
Lab 7 - Ohm`s Law and Resistors in Series and Parallel

Quiz Review
Quiz Review

... A 9-volt battery supplies energy to the circuit. • The total resistance for the circuit shown in the figure is: • Look at what we want, R • For a series circuit, we just add the resistance • RT = R1+R2+R3 = 1  +1  +1  = 3  ...
circuits worksheet
circuits worksheet

Experimental results
Experimental results

... load voltage appears in series with DC bus voltage as a voltage source. Initially when the capacitor is in discharged state the tank current in nearly sine wave with both the lobes of equal magnitude as shown in Figure 3. As the capacitor charges the current in the forward direction increases and cu ...
pulse king - GreenerEnergy.ca
pulse king - GreenerEnergy.ca

CBT - Coulomb Blockade Thermometer
CBT - Coulomb Blockade Thermometer

UC3843 - Danyk.cz
UC3843 - Danyk.cz

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LM338K Datasheet

edge.rit.edu
edge.rit.edu

... o Causes the UC2524A PWM controller to reduce PWM duty cycle (0-95%) o Slows down this "reaction" to avoid oscillating PWM action and reduce EMI Similar to UC2524A shutdown function but exhibits more modulation Basic compensation DNP'ed, further analysis and testing needed ...
1- Harmonic Sources from Commercial Loads
1- Harmonic Sources from Commercial Loads

... year after year. Most dc drives use the six-pulse rectifier shown in Fig. Large drives may employ a 12-pulse rectifier. This reduces thyristor current duties and reduces some of the larger ac current harmonics. The two largest harmonic currents for the six-pulse drive are the fifth and seventh. They ...
the franck-hertz experiment - University of Toronto Physics
the franck-hertz experiment - University of Toronto Physics

... Hertz tube has a six digit serial number, the oven temperature should be maintained between 190C and 210C. The optimum values of 'E1' and 'E2' and the oven temperature will have to be determined by trial and error. It is most likely that 'E1' will be between 4V and 6V and 'E2' between 1V and 2V. ...
2N3773
2N3773

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com ...
Finding the Temperature of a Light Bulb Filament
Finding the Temperature of a Light Bulb Filament

... that resistor. The unit for resistance is the Ohm, abbreviated by a Greek omega,  ; 1  1V / 1A . Carbon resistors typically range from about 10  to about 10M  =107  . Since Ohm’s Law says that V and I are proportional, one might expect that a graph of V (vertical axis) vs. I (horizontal axis) ...
CIRCUITS WORKSHEET
CIRCUITS WORKSHEET

... 21. A 110-V household circuit that contains an 1800-W microwave, a 1000-W toaster, and an 800-W coffeemaker is connected to a 20-A fuse. Determine the current. Will the fuse melt if the microwave and the coffeemaker are both on? ...
Components and Methods for Current Measurement
Components and Methods for Current Measurement

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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.
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