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HMC735LP5 / 735LP5E
HMC735LP5 / 735LP5E

Glossary
Glossary

... lamp to ignite and then applies the open circuit voltage (OCV) to start the lamp. This type of starting circuit keeps lamp end blackening to a minimum and improves lamp life performance, especially in applications where the lamps are frequently switched on and off. Rapid Start (RS): Lamp starting me ...
Chapter 24 - Academic Home Page
Chapter 24 - Academic Home Page

TeamCommonGroundPhas2 - Department of Applied
TeamCommonGroundPhas2 - Department of Applied

... 3.3 volts with a maximum current output of 250mA. This will power the XBee which is the serial communications receiver, but the regulator has a low dropout voltage of 2.8 volts. Next comes the reading of the battery voltage. The battery can be 10 volts. However, that’s too much for the ADC port pin ...
Highly efficient digitally-controlled AC-DC Converter
Highly efficient digitally-controlled AC-DC Converter

... 1. Make sure that the external switches connecting the eload and AC source to the DUT are off. 2. Switch on the main power to the DC source, eload and the AC source. 3. Turn on the power of DC source, eload, and AC source with output/input off. 4. Tune the eload (mode CC) and AC source (mode AC) wit ...
Danfoss Graham VLT 6000
Danfoss Graham VLT 6000

Advantages of AC resistance thermometry bridges
Advantages of AC resistance thermometry bridges

... attempt to cancel these errors, DC instruments reverse their measuring current but at the expense of measurement time and level of accuracy. DC instruments have to reverse their measurement current periodically in an attempt to match the AC bridge performance and in doing so extend the measurement t ...
LM2575 - HTC Korea
LM2575 - HTC Korea

... Since the LM2575 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal limear reguators, especially with higher input voltages. In many cases, the power dissipated is so low that no heatsink is required or its size could be reduced ...
BP5725
BP5725

... A built-in overcurrent protection circuit (reset type) prevents damage due to surge currents. Please discontinue operation if protection circuit is continuously active. ...
Thevenin Step by Step - tech
Thevenin Step by Step - tech

... Thevenin’s Theorem – In-Class Worksheet ...
Fast 8KV MOSFET switch stack (1991, Berkley).pdf
Fast 8KV MOSFET switch stack (1991, Berkley).pdf

MDS-060AAS15 BA Datasheet
MDS-060AAS15 BA Datasheet

... Protections will be activated when output current is between 110% and 130% of IO (Max load). Upon such an occurrence, VO will start to drop. Once the power supply has reached its maximum power limit, the protection will be activated. and the power supply will go into “Hiccup mode” (Auto-Recovery). T ...
, One.. Temperature Pressure Dryness Proximity Voltage Current
, One.. Temperature Pressure Dryness Proximity Voltage Current

... To = +125*C, ROK = 1000 ohms V»«j« = VD*M = Rated Value. Tt= +25°C, VD = 6Vdc, RL = 100 ohms. To = -65°C, VD = 6Vdc, RL = 100 ohms. To = +25-C, VD = 6Vdc, RL = 100 ohms. To = -65°C, VD = 6Vdc, RL = 100 ohms. To = +126°C, Rated VD.K, R L = 1000 ohms. To = +25°C, IT« = l.OA peak, 1 msec, wide pulse, D ...
doc
doc

Using the TPS61040 in High Voltage Applications
Using the TPS61040 in High Voltage Applications

The George Washington University School of Engineering and
The George Washington University School of Engineering and

P517/617 Lec2, P1 1) Capacitance: C
P517/617 Lec2, P1 1) Capacitance: C

香港考試局
香港考試局

Lect10
Lect10

... • As the charge on the capacitor continues to grow, the voltage across the capacitor will increase. • The voltage across the capacitor is limited to e ; the current goes to 0. ...
RLC Circuits (7/22)
RLC Circuits (7/22)

Diode Clamping and Half/Full Wave Signal Rectification Phys 3610/6610 Lab 11 Student: TA:
Diode Clamping and Half/Full Wave Signal Rectification Phys 3610/6610 Lab 11 Student: TA:

... Get one of the lab’s signal generators to generate a 1 kHz 5 V peak-to-peak sine wave. Make sure your sine wave has no DC offset. If you need a transformer to get rid of the DC offset, your TA should have one. Task 1: Rectify the signal using a single 1N4148 diode and a load resistor so that only th ...
16:1 and 8:1 Sensor Interface AFEs Flyer
16:1 and 8:1 Sensor Interface AFEs Flyer

LM747 Dual Operational Amplifier
LM747 Dual Operational Amplifier

... Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable f ...
A bio-inspired bi-operation mode vision sensor
A bio-inspired bi-operation mode vision sensor

Circuit_Theorems
Circuit_Theorems

< 1 ... 1851 1852 1853 1854 1855 1856 1857 1858 1859 ... 2207 >

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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