Answers to SPARKS Magazine – May Issue 2015
... electrical circuits. After checking that isolation can be made it is essential that the supply cannot inadvertently be reinstated. A padlock or suitable locking device can be used for this purpose. Caution notices will also be required at the point(s) of isolation. In the event that more than one pe ...
... electrical circuits. After checking that isolation can be made it is essential that the supply cannot inadvertently be reinstated. A padlock or suitable locking device can be used for this purpose. Caution notices will also be required at the point(s) of isolation. In the event that more than one pe ...
SET/RESET FUNCTION FOR MAGNETIC SENSORS
... These set and reset pulses are shown in Figure 4 as dampened exponential pulse waveforms because the most popular method of generating these relatively high current, short duration pulses is via a capacitive “charge and dump” type of circuit. Most electronics, especially in consumer battery powered ...
... These set and reset pulses are shown in Figure 4 as dampened exponential pulse waveforms because the most popular method of generating these relatively high current, short duration pulses is via a capacitive “charge and dump” type of circuit. Most electronics, especially in consumer battery powered ...
MAX1115/MAX1116 Single-Supply, Low-Power, Serial 8-Bit ADCs General Description Features
... a conversion completes, which results in a supply current of <1µA (see Shutdown Current vs. Supply Voltage plot in the Typical Operating Characteristics section). The digital conversion result is maintained in a static register and is available for access through the serial interface at any time. ...
... a conversion completes, which results in a supply current of <1µA (see Shutdown Current vs. Supply Voltage plot in the Typical Operating Characteristics section). The digital conversion result is maintained in a static register and is available for access through the serial interface at any time. ...
INDIANA UNIVERSITY - PURDUE UNIVERSITY FORT WAYNE DEPARTMENT OF ENGINEERING
... desired temperature. The current control board is built and owned by another company, which increases the cost of the end appliance and limits the ability to make any changes. In order to lower the cost of building the board and making changes, WCS needs a new control circuit designed along with the ...
... desired temperature. The current control board is built and owned by another company, which increases the cost of the end appliance and limits the ability to make any changes. In order to lower the cost of building the board and making changes, WCS needs a new control circuit designed along with the ...
MC33094, Ignition Control
... The MC33094DW is designed for engine compartment use in 12 V automotive ignition applications to provide high performance control of the ignition coil when used with an appropriate Freescale Power Darlington Transistor. Engine control systems utilizing these devices for ignition coil control exhibit ...
... The MC33094DW is designed for engine compartment use in 12 V automotive ignition applications to provide high performance control of the ignition coil when used with an appropriate Freescale Power Darlington Transistor. Engine control systems utilizing these devices for ignition coil control exhibit ...
Ultra low noise amplifiers
... AD has the same noise and also offers full DC specification and lower input currents at expense of higher input current noise. 4. Practical recommendations for design of low noise amplifiers Every resistor is a noise source so it is necessary to keep all resistors in a signal path (and also signal s ...
... AD has the same noise and also offers full DC specification and lower input currents at expense of higher input current noise. 4. Practical recommendations for design of low noise amplifiers Every resistor is a noise source so it is necessary to keep all resistors in a signal path (and also signal s ...
Power Electronic - NED University of Engineering and Technology
... SCR can be switched on somewhere between the commencement and peak of the positive halfcycle, that is between 0° and 90°. If the triggering voltage VT is not large enough to trigger SCR at 90°, the device will not trigger on at all, because VT has the maximum value at the peak of the input and decre ...
... SCR can be switched on somewhere between the commencement and peak of the positive halfcycle, that is between 0° and 90°. If the triggering voltage VT is not large enough to trigger SCR at 90°, the device will not trigger on at all, because VT has the maximum value at the peak of the input and decre ...
Continuous Workstation Monitor, Programmable, USA
... • Dual Wire Continuous Monitors provide redundancy; even if one wrist strap conductor is severed, operator has reliable path-to-ground with other wire. ...
... • Dual Wire Continuous Monitors provide redundancy; even if one wrist strap conductor is severed, operator has reliable path-to-ground with other wire. ...
Insulated Gate Bipolar Transistor (IGBT)
... The introduction of Power MOSFET was originally regarded as a major threat to the power bipolar transistor. However, initial claims of infinite current gain for the power MOSFETs were diluted by the need to design the gate drive circuit capable of supplying the charging and discharging current of th ...
... The introduction of Power MOSFET was originally regarded as a major threat to the power bipolar transistor. However, initial claims of infinite current gain for the power MOSFETs were diluted by the need to design the gate drive circuit capable of supplying the charging and discharging current of th ...
DAC7642 数据资料 dataSheet 下载
... VCC to VSS ............................................................................. –0.3V to 11V VCC to GND .......................................................................... –0.3V to 5.5V VREFL to VSS ............................................................. –0.3V to (VCC – VSS) VC ...
... VCC to VSS ............................................................................. –0.3V to 11V VCC to GND .......................................................................... –0.3V to 5.5V VREFL to VSS ............................................................. –0.3V to (VCC – VSS) VC ...
MAX3385E ±15kV ESD-Protected, 3.0V to 5.5V, Low-Power, ________________General Description
... The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels. The MAX3385E has two receivers and two drivers. It features a 1µA shutdown mode that reduces power consumptio ...
... The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels. The MAX3385E has two receivers and two drivers. It features a 1µA shutdown mode that reduces power consumptio ...
±15kV ESD-Protected, Single/Dual/Octal, CMOS Switch Debouncers General Description Features
... the VCC supply. Driving an input to +25V will cause approximately 0.32mA of current (up to 2.6mA for eight inputs) to flow back into the VCC supply. If the total system VCC supply current is less than the current flowing back into the VCC supply, VCC will rise above normal levels. In some low-curren ...
... the VCC supply. Driving an input to +25V will cause approximately 0.32mA of current (up to 2.6mA for eight inputs) to flow back into the VCC supply. If the total system VCC supply current is less than the current flowing back into the VCC supply, VCC will rise above normal levels. In some low-curren ...
n2” lI/l I3
... 115b, thus providing a relatively constant current flow tional ampli?er 110 in the unity gain mode with the through transistor 1151). This current flow through the differential voltage between leads 116 and 117a equal to inverting input leg provides compensation for the inher zero (i.e. both leads 1 ...
... 115b, thus providing a relatively constant current flow tional ampli?er 110 in the unity gain mode with the through transistor 1151). This current flow through the differential voltage between leads 116 and 117a equal to inverting input leg provides compensation for the inher zero (i.e. both leads 1 ...
SP3222
... a high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3222E/3232E series to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V. The SP3222E/3232E are 2-driver/2-receiver devices. This serie ...
... a high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the SP3222E/3232E series to deliver true RS-232 performance from a single power supply ranging from +3.3V to +5.0V. The SP3222E/3232E are 2-driver/2-receiver devices. This serie ...
optimizing the design of 3.5kw single-mosfet power
... dissipates significantly when in use but remains inactive during calibration, the magnitude and distribution of the other losses are close to reality. By establishing the calibration current at 15A, very near to the 16ARMS 230VAC line current at 3.5kW output, bridge dissipation is approximately the ...
... dissipates significantly when in use but remains inactive during calibration, the magnitude and distribution of the other losses are close to reality. By establishing the calibration current at 15A, very near to the 16ARMS 230VAC line current at 3.5kW output, bridge dissipation is approximately the ...
SENECA VALLEY SCHOOL DISTRICT
... This is an introductory course to the physics of current, electricity, magnetism, and the physics of light and color. It will use a hands-on inquiry based learning approach to investigate select physics principles. Electricity principles will include resistors, series and parallel circuits, electrom ...
... This is an introductory course to the physics of current, electricity, magnetism, and the physics of light and color. It will use a hands-on inquiry based learning approach to investigate select physics principles. Electricity principles will include resistors, series and parallel circuits, electrom ...
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.