Tech Notes - Variable capacitors
... A vacuum variable capacitor uses a set of plates made from concentric cylinders that can be slid in or out of an opposing set of cylinders (sleeve and plunger). These plates are then sealed inside of a non-conductive envelope such as glass or ceramic and placed under a high vacuum. The movable part ...
... A vacuum variable capacitor uses a set of plates made from concentric cylinders that can be slid in or out of an opposing set of cylinders (sleeve and plunger). These plates are then sealed inside of a non-conductive envelope such as glass or ceramic and placed under a high vacuum. The movable part ...
MAX13170E +5V Multiprotocol, 3Tx/3Rx, Software- Selectable Clock/Data Transceiver General Description
... The MAX13170E, along with the MAX13172E and the MAX13174E, form a complete software-selectable data terminal equipment (DTE) or data communication equipment (DCE) interface port that supports the V.28 (RS-232), V.10/V.11 (RS-449/V.36, EIA-530, EIA-530A, X.21), and V.35 protocols. The MAX13170E trans ...
... The MAX13170E, along with the MAX13172E and the MAX13174E, form a complete software-selectable data terminal equipment (DTE) or data communication equipment (DCE) interface port that supports the V.28 (RS-232), V.10/V.11 (RS-449/V.36, EIA-530, EIA-530A, X.21), and V.35 protocols. The MAX13170E trans ...
AD7484 - Analog Devices
... The part uses advanced design techniques to achieve very low power dissipation at high throughput rates. Power consumption in the normal mode of operation is 90 mW. There are two power saving modes: a nap mode, which keeps the reference circuitry ...
... The part uses advanced design techniques to achieve very low power dissipation at high throughput rates. Power consumption in the normal mode of operation is 90 mW. There are two power saving modes: a nap mode, which keeps the reference circuitry ...
MPXV5004G, Integrated Silicon Pressure Sensor On-Chip
... implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes witho ...
... implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes witho ...
... operating at high temperatures, the use of silicon devices is restricted. Silicon carbide (SiC) has superior physical properties like wider bandgap, higher thermal conductivity, higher breakdown field, and higher temperature handling capability that make it a potential material to overcome the limit ...
EVAL-ADM8845 Evaluation Board for Charge Pump Driver for LCD White LED Backlights
... be found in the data sheet for the device. The ADM8845 provides the power required to drive up to 6 white LEDs, using charge pump technology. The LEDs are used for backlighting a color LCD display. To maximize power efficiency, a charge pump that can operate in either a 1x, 1.5x or 2x mode is used. ...
... be found in the data sheet for the device. The ADM8845 provides the power required to drive up to 6 white LEDs, using charge pump technology. The LEDs are used for backlighting a color LCD display. To maximize power efficiency, a charge pump that can operate in either a 1x, 1.5x or 2x mode is used. ...
MAX1566/MAX1567 Six-Channel, High-Efficiency, Digital Camera Power Supplies General Description
... Note 2: The MAX1566/MAX1567 are powered from the step-up output (PVSU). An internal low-voltage startup oscillator drives the step-up starting at approximately 0.9V until PVSU reaches approximately 2.5V. When PVSU reaches 2.5V, the main control circuitry takes over. Once the step-up is up and runnin ...
... Note 2: The MAX1566/MAX1567 are powered from the step-up output (PVSU). An internal low-voltage startup oscillator drives the step-up starting at approximately 0.9V until PVSU reaches approximately 2.5V. When PVSU reaches 2.5V, the main control circuitry takes over. Once the step-up is up and runnin ...
How DMMs measure current
... True-rms vs. average-sensing What causes non-sinusoidal waveforms? • Waveform distortion is caused by non-linear loads, which includes virtually all electronic loads: • Switching-mode power supplies (PC, office equipment) • Light switch dimmers and electronic ballast • Variable speed drives The dio ...
... True-rms vs. average-sensing What causes non-sinusoidal waveforms? • Waveform distortion is caused by non-linear loads, which includes virtually all electronic loads: • Switching-mode power supplies (PC, office equipment) • Light switch dimmers and electronic ballast • Variable speed drives The dio ...
Glossary - Hubbell Lighting
... dominant color tone along the dimension from warm (yellows and reds) to cool (blue). Lamps with a CCT rating below 3200 K are usually considered warm sources, whereas those with a CCT above 4000 K usually considered cool in appearance. Temperatures in between are considered neutral in appearance. Te ...
... dominant color tone along the dimension from warm (yellows and reds) to cool (blue). Lamps with a CCT rating below 3200 K are usually considered warm sources, whereas those with a CCT above 4000 K usually considered cool in appearance. Temperatures in between are considered neutral in appearance. Te ...
industrial electronics
... The ceramic piece cut in the shape of a disk, has an inner structure composed by electrical dipoles at random and results in the electrically neutral unit. Applying an intense electrical field to the ceramic disk (high temperature), the electrical dipoles set preferentially in the direction of the e ...
... The ceramic piece cut in the shape of a disk, has an inner structure composed by electrical dipoles at random and results in the electrically neutral unit. Applying an intense electrical field to the ceramic disk (high temperature), the electrical dipoles set preferentially in the direction of the e ...
An analysis of the relationships between subthreshold electrical
... physiological effects of the GM changes observed in active muscle. Thus, modulation of GM only influences the low frequency characteristics of the membrane impedance, such that it would predominantly affect neuromuscular transmission and t-system excitation. It has very little influence on the high ...
... physiological effects of the GM changes observed in active muscle. Thus, modulation of GM only influences the low frequency characteristics of the membrane impedance, such that it would predominantly affect neuromuscular transmission and t-system excitation. It has very little influence on the high ...
Chapter 11 — Troubleshooting PLC Hardware
... voltage rated PLCs (115/230 VAC) have a selector switch (or movable links) to set the PLC to one of the ...
... voltage rated PLCs (115/230 VAC) have a selector switch (or movable links) to set the PLC to one of the ...
new triacs: is the snubber circuit necessary?
... load. At turn off it limits the slope of reapplied voltage dV/dt but generates an overvoltage VM. Its choice results of a compromise in order to respect (dV/dt)c and repetitive peak off state voltage VDRM triac specification.There are two possibilities: 1/ for low VDRM the resonant circuit must be d ...
... load. At turn off it limits the slope of reapplied voltage dV/dt but generates an overvoltage VM. Its choice results of a compromise in order to respect (dV/dt)c and repetitive peak off state voltage VDRM triac specification.There are two possibilities: 1/ for low VDRM the resonant circuit must be d ...
DTC P0113 Intake Air Temperature (IAT) Sensor
... No active ECT sensor, MAF sensor or VSS DTC present. Vehicle speed is less than 35 mph. Mass Air Flow is less than 12 gm/s. Engine Coolant Temperature is greater than 60°C (140°F). IAT signal voltage indicates an intake air temperature less than -39°C (-38°F). The above conditions are present for at ...
... No active ECT sensor, MAF sensor or VSS DTC present. Vehicle speed is less than 35 mph. Mass Air Flow is less than 12 gm/s. Engine Coolant Temperature is greater than 60°C (140°F). IAT signal voltage indicates an intake air temperature less than -39°C (-38°F). The above conditions are present for at ...
Input/Output Modules - Notifier Fire Systems
... Non- Addressable Zone Monitor Module M710-CZR The M710-CZR non-addressable zone monitor module allows a zone of non-addressable detectors to communicate with a Notifier analogue addressable system. As a result existing nonaddressable loops can be integrated into a Notifier addressable system The mo ...
... Non- Addressable Zone Monitor Module M710-CZR The M710-CZR non-addressable zone monitor module allows a zone of non-addressable detectors to communicate with a Notifier analogue addressable system. As a result existing nonaddressable loops can be integrated into a Notifier addressable system The mo ...
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.