MQME-28E-P Passive Filter
... applications specified in RTCA/DO-160E Section 22 (Lightning Induced Transient Susceptibility) to Level 4 (some waveforms/ applications require the MQME-28-T filter and/or external transient suppression circuitry). The Section 22 Compliance Matrix Table lists these waveforms and applications and des ...
... applications specified in RTCA/DO-160E Section 22 (Lightning Induced Transient Susceptibility) to Level 4 (some waveforms/ applications require the MQME-28-T filter and/or external transient suppression circuitry). The Section 22 Compliance Matrix Table lists these waveforms and applications and des ...
Power Quality Problems and New Solutions
... Description: Very fast variation of the voltage value for durations from a several microseconds to few milliseconds. These variations may reach thousands of volts, even in low voltage. Causes: Lightning, switching of lines or power factor correction capacitors, disconnection of heavy loads. Conseque ...
... Description: Very fast variation of the voltage value for durations from a several microseconds to few milliseconds. These variations may reach thousands of volts, even in low voltage. Causes: Lightning, switching of lines or power factor correction capacitors, disconnection of heavy loads. Conseque ...
File
... generation and transmission, the electric power available is usually an a.c. supply. The supply voltage varies sinusoidally and has a frequency of 50 Hz. It is used for lighting, heating and electric motors. But there are many applications where d.c. supply is needed. When such a d.c. supply is requ ...
... generation and transmission, the electric power available is usually an a.c. supply. The supply voltage varies sinusoidally and has a frequency of 50 Hz. It is used for lighting, heating and electric motors. But there are many applications where d.c. supply is needed. When such a d.c. supply is requ ...
BDTIC www.BDTIC.com/infineon Driving High Power LEDs at 350mA
... descriptions and specifications. The ILD4035 Demonstration Board has two versions. Version ILD4035 24V Board’s sense resistance is optimized to drive a string of 6 series LEDs at 350mA (max current) with an input voltage of 24V. Version ILD4035 12V Board’s sense resistance is optimized to drive a st ...
... descriptions and specifications. The ILD4035 Demonstration Board has two versions. Version ILD4035 24V Board’s sense resistance is optimized to drive a string of 6 series LEDs at 350mA (max current) with an input voltage of 24V. Version ILD4035 12V Board’s sense resistance is optimized to drive a st ...
4.1 Introduction Word Document | GCE AS/A
... of doing this as we will find out later in this topic. In the simple model that we have looked at here communication is possible over only relatively short distances. The human voice can only carry for short distances in air. In order to transfer a message or ‘data’ over longer distances other carri ...
... of doing this as we will find out later in this topic. In the simple model that we have looked at here communication is possible over only relatively short distances. The human voice can only carry for short distances in air. In order to transfer a message or ‘data’ over longer distances other carri ...
Per Phase Analysis
... Derive the relationship between line current and phase load current in a balanced Y- Δ three phase circuit. For a balanced Y- Δ three phase circuit convert the line current phasor to phase load current phasor and vice versa. Plot the phasors of line current and phase load current in a balanced Y- Δ ...
... Derive the relationship between line current and phase load current in a balanced Y- Δ three phase circuit. For a balanced Y- Δ three phase circuit convert the line current phasor to phase load current phasor and vice versa. Plot the phasors of line current and phase load current in a balanced Y- Δ ...
2521/104 ELECTRICAL INSTALLITION AND PRINCIPLES Oct/Nov
... ( c) With the aid of labelled diagram show the construction of a mercury cell. (5 marks) (d) A miliameter of 2O resistance reads up to 150mA. With the aid of sketches, show how the miliameter can be used to read: i. 20 volts; ii. 20 Amperes (7 marks) 8. (a) Define the following a.c terms: i. Period; ...
... ( c) With the aid of labelled diagram show the construction of a mercury cell. (5 marks) (d) A miliameter of 2O resistance reads up to 150mA. With the aid of sketches, show how the miliameter can be used to read: i. 20 volts; ii. 20 Amperes (7 marks) 8. (a) Define the following a.c terms: i. Period; ...
Evaluates: MAX1778/MAX1880/MAX1881/MAX1882 MAX1778 Evaluation Kit General Description Features
... step-up switching regulator, two charge-pump voltageregulator circuits, a VCOM buffer, and a low-drop out linear regulator (LDO). The step-up switching circuit is configured for a +8V output that provides up to 250mA of current from a +3.0V supply. The EV kit can be powered from a +2.7V to +5.5V sup ...
... step-up switching regulator, two charge-pump voltageregulator circuits, a VCOM buffer, and a low-drop out linear regulator (LDO). The step-up switching circuit is configured for a +8V output that provides up to 250mA of current from a +3.0V supply. The EV kit can be powered from a +2.7V to +5.5V sup ...
MAX8621Y/MAX8621Z Dual Step-Down DC-DC Power-Management ICs for Portable Devices General Description
... converters, four low-dropout linear regulators (LDOs) with pin-programmable capability, one open-drain driver, a 60ms (typ) reset timer, and power-on/off control logic. These devices offer high efficiency with a no-load supply current of 160µA, and their small thin QFN 4mm x 4mm package makes them i ...
... converters, four low-dropout linear regulators (LDOs) with pin-programmable capability, one open-drain driver, a 60ms (typ) reset timer, and power-on/off control logic. These devices offer high efficiency with a no-load supply current of 160µA, and their small thin QFN 4mm x 4mm package makes them i ...
TWR-5/3-15/250-D12-C Datasheet
... The TWR models include an input pin which can turn on or shut off the converter by remote signal. For positive logic models (no model number suffix), if this pin is left open, the converter will always be enabled as long as proper input power is present. On/Off signal currents are referred to the Inp ...
... The TWR models include an input pin which can turn on or shut off the converter by remote signal. For positive logic models (no model number suffix), if this pin is left open, the converter will always be enabled as long as proper input power is present. On/Off signal currents are referred to the Inp ...
DAC8043A 数据手册DataSheet 下载
... diodes and series resistor; this input structure is duplicated on each digital input. High voltage static charges applied to the inputs are shunted to the supply and ground rails through forward biased diodes. These protection diodes were designed to clamp the inputs to well below dangerous levels d ...
... diodes and series resistor; this input structure is duplicated on each digital input. High voltage static charges applied to the inputs are shunted to the supply and ground rails through forward biased diodes. These protection diodes were designed to clamp the inputs to well below dangerous levels d ...
MAX16838 Integrated, 2-Channel, High-Brightness LED Driver with High-Voltage Boost and SEPIC Controller
... supports the boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. The current-mode control provides fast response and simplifies loop compensation. The MAX16838 also features an adaptive output-voltage adjustment scheme that minimizes the power dissipation ...
... supports the boost or SEPIC topologies and operates in an adjustable frequency range between 200kHz and 2MHz. The current-mode control provides fast response and simplifies loop compensation. The MAX16838 also features an adaptive output-voltage adjustment scheme that minimizes the power dissipation ...
Negative Backpressure EGR Valves
... correctly. This will cause the EGR not to open. Or the lower spring may not have enough tension to keep the seal long enough. In this case the EGR may open, but as soon as it opens the manifold vacuum overcomes the weak spring and the valve closes. Replacing the valve is the only solution to these p ...
... correctly. This will cause the EGR not to open. Or the lower spring may not have enough tension to keep the seal long enough. In this case the EGR may open, but as soon as it opens the manifold vacuum overcomes the weak spring and the valve closes. Replacing the valve is the only solution to these p ...
October, 1987 P/N 21-6100 DUAL SHOWMAN TOP AMPLIFIER P/N
... horizontal time base at 2 milliseconds per division, and measue the period of the ripple. Since most Fender amps use full wave or gridge supplies, power supply ripple equals 120 hertz while heater induced hum equals 60 hertz. If you read 8.3 lilliseconds, check the filter capacitors, but if you meas ...
... horizontal time base at 2 milliseconds per division, and measue the period of the ripple. Since most Fender amps use full wave or gridge supplies, power supply ripple equals 120 hertz while heater induced hum equals 60 hertz. If you read 8.3 lilliseconds, check the filter capacitors, but if you meas ...
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.