Press text (English)
... The temperature display can be converted from °C to °F, which increases the acceptance of the device e.g. in America and Asia. Apart from the two norm signal outputs there is a relay with alternate contact available for simple switching tasks. An alarm can be emitted as a long term or temporary cont ...
... The temperature display can be converted from °C to °F, which increases the acceptance of the device e.g. in America and Asia. Apart from the two norm signal outputs there is a relay with alternate contact available for simple switching tasks. An alarm can be emitted as a long term or temporary cont ...
temptature measurements
... • The resistance temperature detector (RTD) is constructed by mounting a metal wire on an insulating support structure to eliminate mechanical strain and by encasing the wire to prevent changes in resistance due to sensor’s environment, such as corrosion. ...
... • The resistance temperature detector (RTD) is constructed by mounting a metal wire on an insulating support structure to eliminate mechanical strain and by encasing the wire to prevent changes in resistance due to sensor’s environment, such as corrosion. ...
Squirrel Range Technical Notes
... The logger can read the inputs at one of four different reading rates. The number of different inputs that each analogue to digital converter can read depends upon the reading rate and whether or not mains rejection is turned on. With mains rejection turned on each analogue to digital converter can ...
... The logger can read the inputs at one of four different reading rates. The number of different inputs that each analogue to digital converter can read depends upon the reading rate and whether or not mains rejection is turned on. With mains rejection turned on each analogue to digital converter can ...
chapter 4 – evolution of electronics in modern society
... Copper is the most commonly used conducting metal in electrical or electronics industry. It has 29 electrons that orbit around the nucleus in four electron shells. An electron is a negatively charged particle in an atom. In conductive materials, electrons can jump from atom to atom. To start the ele ...
... Copper is the most commonly used conducting metal in electrical or electronics industry. It has 29 electrons that orbit around the nucleus in four electron shells. An electron is a negatively charged particle in an atom. In conductive materials, electrons can jump from atom to atom. To start the ele ...
ADM3202 数据手册DataSheet 下载
... The ADM3202/ADM3222 feature high slew rates permitting data transmission at rates well in excess of the EIA/RS-232E specifications. RS-232 voltage levels are maintained at data rates up to 460 kbps even under worst-case loading conditions. This allows high speed data links between two terminals and ...
... The ADM3202/ADM3222 feature high slew rates permitting data transmission at rates well in excess of the EIA/RS-232E specifications. RS-232 voltage levels are maintained at data rates up to 460 kbps even under worst-case loading conditions. This allows high speed data links between two terminals and ...
PAM2812ABR - Diodes Incorporated
... For controlling the LED brightness, the PAM2812 can perform the dimming control by applying a PWM signal to EN pin. When an external PWM signal is connected to the EN pin, brightness of white LED is adjusted by the duty cycle. The average LED current is proportional to the PWM signal duty cycle. The ...
... For controlling the LED brightness, the PAM2812 can perform the dimming control by applying a PWM signal to EN pin. When an external PWM signal is connected to the EN pin, brightness of white LED is adjusted by the duty cycle. The average LED current is proportional to the PWM signal duty cycle. The ...
Impulse generators used for testing low-voltage equipment
... 4.3 Impulse generators with defined voltage and current waveforms The 1.2/50-8/20 generator #7 is commercially available and established in test laboratories. Although generator #8 might be referenced most people would use generator #7 for testing. A similar situation exists for the 10/1000 impulse ...
... 4.3 Impulse generators with defined voltage and current waveforms The 1.2/50-8/20 generator #7 is commercially available and established in test laboratories. Although generator #8 might be referenced most people would use generator #7 for testing. A similar situation exists for the 10/1000 impulse ...
Lecture 14 Disadvantages of Transformers and Introduction to the
... Circuits We list below four disadvantages to the use of transformers, operating at fSW, in PWM converter circuits. 1. Step-up/down voltages, that now vary over a wider dynamic range due to transformer action, may further stress solid state components in either the current through the switches or the ...
... Circuits We list below four disadvantages to the use of transformers, operating at fSW, in PWM converter circuits. 1. Step-up/down voltages, that now vary over a wider dynamic range due to transformer action, may further stress solid state components in either the current through the switches or the ...
6A, Current-Sharing Dual LDO
... internal bandgap, FET, and error amplifier have subtle differences across devices. Although the two LDOs use the same resistor feedback network in this configuration, these differences in internal components will cause the two LDOs to regulate slightly different output voltages. As such, the LDO wit ...
... internal bandgap, FET, and error amplifier have subtle differences across devices. Although the two LDOs use the same resistor feedback network in this configuration, these differences in internal components will cause the two LDOs to regulate slightly different output voltages. As such, the LDO wit ...
Evaluates: MAX15068 MAX15068 Evaluation Kit General Description Quick Start
... design to evaluate the MAX15068 dual ORing, single hotswap controller. The EV kit operates from a 4.8V to 18V range and provides a solution for evaluating two input supply rail applications requiring the safe insertion and removal of circuit line cards from a live backplane. Each rail has an individ ...
... design to evaluate the MAX15068 dual ORing, single hotswap controller. The EV kit operates from a 4.8V to 18V range and provides a solution for evaluating two input supply rail applications requiring the safe insertion and removal of circuit line cards from a live backplane. Each rail has an individ ...
SCR Power Controllers
... feedback, high resolution control loop. Increased accuracy and linearity. ...
... feedback, high resolution control loop. Increased accuracy and linearity. ...
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.