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Advance HID Pocket Troubleshooting Guide
Advance HID Pocket Troubleshooting Guide

ATmega88/168 Automotive - Appendix A
ATmega88/168 Automotive - Appendix A

... AEC-Q100 qualification relies on temperature accelerated stress testing. High temperature field usage however may result in less significant stress test acceleration. In order to prevent the risk that ATmega88/168 lifetime would not satisfy the application end-of-life reliability requirements, Atmel ...
Loadbreaking and the Bazooms Curve
Loadbreaking and the Bazooms Curve

MAX6654 1°C Accurate Remote/Local Temperature Sensor with SMBus Serial Interface General Description
MAX6654 1°C Accurate Remote/Local Temperature Sensor with SMBus Serial Interface General Description

... The MAX6654 can directly measure the die temperature of CPUs and other ICs having on-board temperature-sensing diodes as shown in the Typical Operating Circuit, or it can measure the temperature of a discrete diode-connected transistor. For best accuracy, the discrete transistor should be a small-si ...
F7 Quick Start Guide
F7 Quick Start Guide

... be carried out by qualified personnel. For the purposes of the safety precautions, qualified personnel are defined as individuals who are familiar with the installation, starting, operation and maintenance of frequency inverters and have the proper qualifications for this work. Safe operation of the ...
MAX1480A/B/C/MAX1490A/B
MAX1480A/B/C/MAX1490A/B

DC-AC Power Inverter Pure Sine Wave PST-600-12 PST-600
DC-AC Power Inverter Pure Sine Wave PST-600-12 PST-600

... value travels from the AC source to these elements in the (+) half cycle of the sinusoidal voltage (Positive value) and the same value is returned back to the AC source in the (-) half cycle of the sinusoidal voltage (Negative value). Hence, when averaged over a span of one cycle, the net value of t ...
controlo de um dirigível
controlo de um dirigível

... The purpose of this work is to develop an autonomous system that has ability to fly on a three-dimensional environment. A blimp, three DC motors and optical sensors compose the system. Two motors control the horizontal movements of the system. The third motor controls the system movement in the vert ...
Negative Rail Input, Rail-to-Rail Output, Precision, 850
Negative Rail Input, Rail-to-Rail Output, Precision, 850

EnerGenius® ECU Benefits
EnerGenius® ECU Benefits

MAX11080/MAX11081 12-Channel, High-Voltage Battery-Pack Fault Monitors General Description
MAX11080/MAX11081 12-Channel, High-Voltage Battery-Pack Fault Monitors General Description

... in 100mV increments, and have a guaranteed accuracy of ±25mV over the entire temperature range. The undervoltage level is also user selectable from +1.6V to +2.8V in 200mV increments. These levels are guaranteed to ±100mV over the entire temperature range. Undervoltage detection can be disabled as o ...
PRD-ES-053 - Medium Voltage Switchgears
PRD-ES-053 - Medium Voltage Switchgears

... interchangeable without first having to be converted. The withdrawable inserts shall be equipped for interlocking in three defined and clearly labelled positions. The three interlocking positions shall be as described above in 2.3.4. It shall be possible to safely change HRC-fuses without the need t ...
MAX1480A/B/C/MAX1490A/B Complete, Isolated RS-485/RS-422 Data Interface _________________General Description
MAX1480A/B/C/MAX1490A/B Complete, Isolated RS-485/RS-422 Data Interface _________________General Description

... The MAX1480B/MAX1480C/MAX1490B feature reducedslew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The MAX1480A/MAX1490A driver slew rate is not limited, allowing transmission rates up to ...
transducer
transducer

... II. A DC power supply or an audio frequency generator is used as an external power source. III. These transducers produce the output signal in the form of variation in resistance, capacitance, inductance or some other electrical parameter in response to the quantity to be measured. ...
Tecnociencia Articul..
Tecnociencia Articul..

... bladders had the highest transepithelial resistances (643.2 and 590.6 kohm/cm2 respectively); instead the rabbit gallbladder had the lowest resistance (5.3 kohm/cm2). Transepithelial resistances are mentioned in the decreasing order: rat urinary bladder > rabbit urinary bladder > frog skin > rabbit ...
portable refrigerator
portable refrigerator

... Dynamics of Temperature Settings Danfoss BD35F compressor The compressor is controlled by the digital thermostat setting. The Danfoss BD35F compressor is used on all of the National Luna fridge/freezer product range. Developed in Germany, it has a unique Multi - Speed (2,000 - 3,500 rpm) capability ...
Lecture 18
Lecture 18

PRD-ES-053-Medium Voltage Switchgears R1
PRD-ES-053-Medium Voltage Switchgears R1

... interchangeable without first having to be converted. The withdrawable inserts shall be equipped for interlocking in three defined and clearly labelled positions. The three interlocking positions shall be as described above in 2.3.4. It shall be possible to safely change HRC-fuses without the need t ...
MAX11162 16-Bit, 500ksps, +5V Unipolar Input, SAR ADC, in Tiny 10-Pin µMAX
MAX11162 16-Bit, 500ksps, +5V Unipolar Input, SAR ADC, in Tiny 10-Pin µMAX

... sampled with an integrated pseudo-differential track-andhold (T/H) exhibiting no pipeline delay or latency, making this ADC ideal for multiplexed channel applications. ...
Repair / Upgrade for Sunbeam Alpine Electronic Tachometer
Repair / Upgrade for Sunbeam Alpine Electronic Tachometer

... far these parts have shifted over time. Granted these are over 40 years old, but I had not previously realized in my electronic engineering experience how badly some of these parts will shift with age. Many have shifted 50 to 100% from the original value. On no units have I seen any significant chan ...
RE:
RE:

... aggregated generating facilities. In response to these comments, the AESO replied that Final Proposed VAR-002-AB-1.1b applied to all aggregated generating facilities including wind aggregated generating facilities, except for those that are identified as exempt. Page 2 ...
NIST Measurement Service for DC Standard Resistors
NIST Measurement Service for DC Standard Resistors

... the quantum Hall effect and adjusted, if necessary. These standard resistors have been fully characterized for drift, temperature, pressure, and load coefficients. NIST provides a calibration service for standard resistors of nominal decade values (i.e., R = 10n where n is an integer) in the range b ...
ECE2120 Prelabs
ECE2120 Prelabs

PAM8603M
PAM8603M

... At this stage it is paramount to notice the necessity of separate grounds. Noise currents in the output power stage need to be returned to output noise ground and nowhere else. Were these currents to circulate elsewhere, they may get into the power supply, the signal ground, etc, even worse, they ma ...
AD9224 数据手册DataSheet下载
AD9224 数据手册DataSheet下载

... expense of pipeline delay or latency. This means that while the converter is capable of capturing a new input sample every clock cycle, it actually takes three clock cycles for the conversion to be fully processed and appear at the output. This latency is not a concern in most applications. The digi ...
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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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