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Service manual_VGD
Service manual_VGD

... The load detector senses the load current. i.e. the inverter current, and sends the signal by two paths. In battery mode, the UPS will go to failure mode if overload condition happened. The panel will indicate the fault condition. A. The UPS collects the continuous overload signals through CPU switc ...
semiconductor diodes
semiconductor diodes

compressor - Analogue Haven
compressor - Analogue Haven

Operational Amplifier Circuits Comparators and Positive Feedback
Operational Amplifier Circuits Comparators and Positive Feedback

... back to VL and the alarm is turned off. This fluctuation in Vin might be noise in the signal or some temporary decreases in the smoke (the effect of a person fanning at the smoke detector). The smoke is still around however and as it is shown on the evolution, the transition voltage will be crossed ...
Winding Resistance Measurements Megger MTO210
Winding Resistance Measurements Megger MTO210

... constant) ...
as built documentation checklist
as built documentation checklist

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Using transistors as switches…

MAX16999 Ultra-Low Output Voltage, Low-Quiescent
MAX16999 Ultra-Low Output Voltage, Low-Quiescent

mosfet_s-f.pdf
mosfet_s-f.pdf

Les circuits électriques
Les circuits électriques

... current intensity ________________________ flowing into an element or a node of an electrical circuit is equal to always ________________________ the current intensity flowing out of it. Kirchhoff’s total energy acquired second law is about potential difference. It states that the __________________ ...
NS1nanosynth - Soundmachines
NS1nanosynth - Soundmachines

... This   last   point   bring   us   quickly   and   directly   to   the   point   #4,   the   one   that,   along   with   NS1's   price,   is   pushing  the  NS1nanosynth  in  a  big  market:  We  choosed  to  make  ALL  the  CVs  ( ...
TS Series: 5 kW to 45 kW - Magna
TS Series: 5 kW to 45 kW - Magna

... aluminum electrolytic capacitors which has the desired electrical properties to provide this function. These components require bleed resistors to discharge any voltage when the power supply has no load and is disabled. While the presence of these components and the resulting performance are normall ...
TC2001 - KSP Electronics
TC2001 - KSP Electronics

... Feedback divider resistor connected to V5. This resistor is normally set at 1kΩ. Feedback divider resistor connected to AGND. This value of this resistor depends on the supply voltage setting and helps set the TK2150 gain in conjunction with RI, RF, RFBA, and RFBC. Please see the Modulator Feedback ...
Institute Lecture Series Talk
Institute Lecture Series Talk

... domain always involves information loss due to aliasing, quantization and coding. If the signal source characteristics are not well known or power consumption is an issue use analog signal processing. • However, once analog signals are converted to digital domain they can be stored and transmitted w ...
Series Resonant Converter with Output Voltage Doubler
Series Resonant Converter with Output Voltage Doubler

Modified Seried Inverter
Modified Seried Inverter

... • Less effect of noise • synchronization between the transmitter & receiver is not essential. ...
Common Mode Rejection Ratio Tester (CMRR 2.0) User
Common Mode Rejection Ratio Tester (CMRR 2.0) User

CMD235C4 - Custom MMIC
CMD235C4 - Custom MMIC

... insertion loss of 2.5 dB and high isolation of 40 dB at 10 GHz. The switch also includes an on board binary decoder circuit which reduces the number of required logic control lines from five to three. The CMD235C4 operates using complementary control voltage logic lines of 0/-5 V and consumes little ...
Take a lot of care when connecting the circuit, to the place of the
Take a lot of care when connecting the circuit, to the place of the

... inverted without any danger. The “polarity” of the input terminals is useful only to keep the right phase between voltage and current in power measurements. The voltage input of the three channels are isolated from one another. Current inputs are also symmetrical, isolated from one another and isola ...
1. Scope
1. Scope

... 5. Test Pulser Interfaces The test pulser function is used during ground test phases and on-orbit to monitor the transfer function stability with time. The test pulser injects a known charge into the front of each preamplifier at a known rate. The DPB will supply one programmable voltage level and t ...
Lab 6
Lab 6

CA3162, CA3162A
CA3162, CA3162A

... 1. Apply 0V across V11 to V10 . Adjust zero potentiometer to give 000mV reading. Apply 900mV to input and adjust gain potentiometer to give 900mV reading. 2. Linearity is measured as a difference from a straight line drawn through zero and positive full scale. Limits do not include ±0.5 count bit di ...
bosch and nosso voltage regulators
bosch and nosso voltage regulators

Capacitor Discharge Ignition
Capacitor Discharge Ignition

UPS product brochure
UPS product brochure

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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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