ISL8117EVAL1Z User Guide
... PCB Layout Guidelines Careful attention to layout requirements is necessary for successful implementation of an ISL8117 based DC/DC converter. The ISL8117 switches at a very high frequency and therefore the switching times are very short. At these switching frequencies, even the shortest trace has s ...
... PCB Layout Guidelines Careful attention to layout requirements is necessary for successful implementation of an ISL8117 based DC/DC converter. The ISL8117 switches at a very high frequency and therefore the switching times are very short. At these switching frequencies, even the shortest trace has s ...
Industrial Electronics
... 125 VAC protection will likely be insufficient, for industrial AC supply lines. Voltages of 240, 480, or even 600 VAC may be encountered. SOC is one of the few fuse manufacturers offering miniature fuse protection at these voltage levels. In AC/DC converters, dual ratings are often desirable. Since, ...
... 125 VAC protection will likely be insufficient, for industrial AC supply lines. Voltages of 240, 480, or even 600 VAC may be encountered. SOC is one of the few fuse manufacturers offering miniature fuse protection at these voltage levels. In AC/DC converters, dual ratings are often desirable. Since, ...
MXL1543B +5V Multiprotocol, 3Tx/3Rx, Software- Selectable Clock/Data Transceivers General Description
... V.28 (RS-232), V.10/V.11 (RS-449/V.36, EIA-530, EIA530A, X.21), and V.35 protocols. The MXL1543B transceivers carry the high-speed clock and data signals while the MXL1544/MAX3175 carry the control signals. The MXL1543B can be terminated by the MXL1344A software-selectable resistor termination netwo ...
... V.28 (RS-232), V.10/V.11 (RS-449/V.36, EIA-530, EIA530A, X.21), and V.35 protocols. The MXL1543B transceivers carry the high-speed clock and data signals while the MXL1544/MAX3175 carry the control signals. The MXL1543B can be terminated by the MXL1344A software-selectable resistor termination netwo ...
Bates
... Leaky capacitor is equivalent to a partial short circuit: it loses its insulating properties gradually, lowering its resistance. Except for electrolytics, capacitors do not deteriorate with age while stored, since there is no applied voltage. All capacitors can change value over time, but some ...
... Leaky capacitor is equivalent to a partial short circuit: it loses its insulating properties gradually, lowering its resistance. Except for electrolytics, capacitors do not deteriorate with age while stored, since there is no applied voltage. All capacitors can change value over time, but some ...
an358 optimizing low-power operation of the c8051f9xx
... of the supply current vs. frequency curve changes. This divides the curve into two piece wise linear regions. 2) The absolute current per MHz decreases as the system clock frequency increases. At low frequencies, the CPU operates at a higher µA/MHz. As frequency increases, the µA/MHz drops and can b ...
... of the supply current vs. frequency curve changes. This divides the curve into two piece wise linear regions. 2) The absolute current per MHz decreases as the system clock frequency increases. At low frequencies, the CPU operates at a higher µA/MHz. As frequency increases, the µA/MHz drops and can b ...
PDF：213KB
... ➀ Peak repetitive off state voltage VDRM Voltage must not exceed the VDRM level. Considering the largest applicable voltage plus an adequate margin, according to the operating conditions, determine off state voltage to be appropriate, and select an adequate device. ➁ Peak repetitive reverse voltage ...
... ➀ Peak repetitive off state voltage VDRM Voltage must not exceed the VDRM level. Considering the largest applicable voltage plus an adequate margin, according to the operating conditions, determine off state voltage to be appropriate, and select an adequate device. ➁ Peak repetitive reverse voltage ...
AN203: 8-bit MCU Printed Circuit Board Design Notes
... Mixed-signal embedded systems have both analog and digital voltage supplies that often share a common regulator. Through this shared power net, high-frequency digital noise can couple into the analog circuit and corrupt analog measurements. Filtering or isolating the analog power circuit can elimina ...
... Mixed-signal embedded systems have both analog and digital voltage supplies that often share a common regulator. Through this shared power net, high-frequency digital noise can couple into the analog circuit and corrupt analog measurements. Filtering or isolating the analog power circuit can elimina ...
AD7112 数据手册DataSheet 下载
... DAC. This allows an easy upgrading of existing AD7528 designs which would benefit both from the wider dynamic range and the finer step resolution offered by the AD7112. The AD7112 is fabricated in Linear Compatible CMOS (LC2MOS), an advanced, mixed technology process that combines precision bipolar ...
... DAC. This allows an easy upgrading of existing AD7528 designs which would benefit both from the wider dynamic range and the finer step resolution offered by the AD7112. The AD7112 is fabricated in Linear Compatible CMOS (LC2MOS), an advanced, mixed technology process that combines precision bipolar ...
The pa0rdt-Mini-Whip ©, an active receiving antenna
... was adjusted at the same level. When the loop was used, the distance from the wall made almost no difference in the level of noise. With the active whip antenna the difference was evident. It was literally to be kept against the wall to receive as much noise as with the loop antenna. The measurement ...
... was adjusted at the same level. When the loop was used, the distance from the wall made almost no difference in the level of noise. With the active whip antenna the difference was evident. It was literally to be kept against the wall to receive as much noise as with the loop antenna. The measurement ...
VT1418 - CPU Board Resets Sporadically
... voltage transients and noise pulses on the pushbutton reset input signal. Most often, this happens when the pushbutton reset signal line is extended several feet away from the CPU board. Some customers have reported electrical noise on the Ethernet (CAT5) cable causing sporadic resetting. This was t ...
... voltage transients and noise pulses on the pushbutton reset input signal. Most often, this happens when the pushbutton reset signal line is extended several feet away from the CPU board. Some customers have reported electrical noise on the Ethernet (CAT5) cable causing sporadic resetting. This was t ...
ELECTROMAGNETIC OSCILLATIONS and WAVES
... contains self-studying of theory of sections “Oscillations” and “Waves” of the course of physics for telecommunications technician. • Complex task is consists of four problems: 3.2; 3.3; 3.4; 3.6. Student must implement on one task from each problem. Concrete number of statement on each stage and in ...
... contains self-studying of theory of sections “Oscillations” and “Waves” of the course of physics for telecommunications technician. • Complex task is consists of four problems: 3.2; 3.3; 3.4; 3.6. Student must implement on one task from each problem. Concrete number of statement on each stage and in ...
P11 Series - Allied Electronics
... Be sure to provide an appropriate fail-safe function to prevent secondary product damage caused by malfunction (e.g. use a metal oxide varistor for limitation of overvoltage condition). This listing does not claim to be complete, but merely reflects the experience of EPCOS AG. ...
... Be sure to provide an appropriate fail-safe function to prevent secondary product damage caused by malfunction (e.g. use a metal oxide varistor for limitation of overvoltage condition). This listing does not claim to be complete, but merely reflects the experience of EPCOS AG. ...
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.