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Six-Output 600V MGDs Simplify 3
Six-Output 600V MGDs Simplify 3

... Appendix 1. It can be seen that the choice of components is limited by the total amount of resistance allowed in the gate loop, and the maximum current that can be sourced by the internal amplifier. For those motor drives that do not use co-pak IGBTs, it is a relatively simple operation to prevent t ...
The Rail Splitter Precision Virtual Ground
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... applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask ...
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... The body protection and marking are resistant to all normal industrial cleaning fluids suitable for printed boards. ...
Primary switch mode power supply CP
Primary switch mode power supply CP

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... With the switch in this circuit closed (left), there is no current in R2, because the current has an alternate zero-resistance path through the switch. There is current in R1 and this current is measured with the ammeter (a device for measuring current) at the right side of the circuit. If the swit ...
Power VS Frequency - Pulse Electronics
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unit4 - University of Kentucky College of Engineering
unit4 - University of Kentucky College of Engineering

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MAX9610 1µA, µDFN/SC70, Lithium-Ion Battery, Precision Current-Sense Amplifier General Description
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... Conceptual Example 11 A Three-Way Light Bulb and Parallel Wiring Within the bulb there are two separate filaments. When one burns out, the bulb can produce only one level of illumination, but not the highest. Are the filaments connected in series or parallel? ...
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... reactive element. Basically the circuit acts as a voltage divider. Since the impedance of one of the components is frequency dependent the ratio of the voltage division varies with frequency. The voltage is divided between the two components. As one voltage in the divider increases, the other decrea ...
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... Conceptual Example 11 A Three-Way Light Bulb and Parallel Wiring Within the bulb there are two separate filaments. When one burns out, the bulb can produce only one level of illumination, but not the highest. Are the filaments connected in series or parallel? ...
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... sense amplifier, the UCC3837 will enter a constant output current mode. Fig. 4 illustrates the cyclical retry of the UCC3837 under fault conditions. Note that the initial fault time is longer than subsequent cycles due to the fact that the timing capacitor is completely discharged and must initially ...
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... wiring, 6 #12 90º C supply conductors or 60º C for end of run. The fixture is also UL listed as ‘access above ceiling not required’. ...
COMBOLIGHT Remodel Recessed w/ Trim - 12V AR70 - 4 Light
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... Lamp ring features beveled edge and lockable accessory ring that can accept one optical accessory. Additional media holder* can be ordered to allow fixture to accommodate up to 2 accessories plus one snoot or cross baffle. Optional retractable arm is available for lamp pulldown and extreme aiming. D ...
COMBOLIGHT Remodel Recessed w/ Trim - 12V AR70 - 3 Light
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... Lamp ring features beveled edge and lockable accessory ring that can accept one optical accessory. Additional media holder* can be ordered to allow fixture to accommodate up to 2 accessories plus one snoot or cross baffle. Optional retractable arm is available for lamp pulldown and extreme aiming. D ...
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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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