Simulation of Active Filtering Applied to A Computer Centre
... sequence currents. Hence, the filter has to inject the inverse of the negative sequence current to balance the unbalanced loads. The shunt APF discussed previously has the ability to balance the asymmetrical current. This is because the CC-VSI is operated to directly control the AC grid current to f ...
... sequence currents. Hence, the filter has to inject the inverse of the negative sequence current to balance the unbalanced loads. The shunt APF discussed previously has the ability to balance the asymmetrical current. This is because the CC-VSI is operated to directly control the AC grid current to f ...
Knowles Electronics, Inc
... The sensitivity of a typical Emkay microphone is shown in Fig. 3. in units of dB relative to 1 Volt per 0.1 Pascal. The microphone components can be modified to make it more or less sensitive at lower frequencies or to reduce, increase, or shift the peak at higher frequencies. ...
... The sensitivity of a typical Emkay microphone is shown in Fig. 3. in units of dB relative to 1 Volt per 0.1 Pascal. The microphone components can be modified to make it more or less sensitive at lower frequencies or to reduce, increase, or shift the peak at higher frequencies. ...
POWER PROTECTION
... InterActive from Liebert. Designed with simple controls for easy operation, the PowerSure InterActive provides five minutes of battery back-up at full load ...more than enough time to save work in progress and shut down your system. With its advanced line-interactive technology, the PowerSure InterA ...
... InterActive from Liebert. Designed with simple controls for easy operation, the PowerSure InterActive provides five minutes of battery back-up at full load ...more than enough time to save work in progress and shut down your system. With its advanced line-interactive technology, the PowerSure InterA ...
instruction manual
... hazards. Before connecting the test leads; turn off the power to the circuit under test; set the meter to the desired function and range; connect the test leads to the meter first, then connect to the circuit under test. Reapply power. If an erroneous reading is observed, disconnect power immediatel ...
... hazards. Before connecting the test leads; turn off the power to the circuit under test; set the meter to the desired function and range; connect the test leads to the meter first, then connect to the circuit under test. Reapply power. If an erroneous reading is observed, disconnect power immediatel ...
Chapter 6: Single Phase Transformer
... Transformer equivalent circuit, with secondary impedances referred to the primary side Ep = primary induced voltage Vp = primary terminal voltage Ip = primary current Ie = excitation current ...
... Transformer equivalent circuit, with secondary impedances referred to the primary side Ep = primary induced voltage Vp = primary terminal voltage Ip = primary current Ie = excitation current ...
MAX1639 High-Speed Step-Down Controller with Synchronous Rectification for CPU Power ________________General Description
... size, and efficiency while staying within the worst-case specification limits for stress-related parameters, such as capacitor ripple current. The MAX1639 circuit was designed for the specified frequencies. Do not change the switching frequency with- ...
... size, and efficiency while staying within the worst-case specification limits for stress-related parameters, such as capacitor ripple current. The MAX1639 circuit was designed for the specified frequencies. Do not change the switching frequency with- ...
File - Lectures 1 to 14
... converts chemical energy into electrical energy by setting electrons into motion by giving them energy to move from a higher potential to a lower potential • A “positioning” of the charges established will result in a potential difference between the terminals, just like positioning of a water tank ...
... converts chemical energy into electrical energy by setting electrons into motion by giving them energy to move from a higher potential to a lower potential • A “positioning” of the charges established will result in a potential difference between the terminals, just like positioning of a water tank ...
SM72295 Photovoltaic Full Bridge Driver (Rev. E)
... In the application the HS nodes are clamped by the body diode of the external lower N-MOSFET, therefore the HS node will generally not exceed –1V. However, in some applications, board resistance and inductance may result in the HS node exceeding this stated voltage transiently. If negative transient ...
... In the application the HS nodes are clamped by the body diode of the external lower N-MOSFET, therefore the HS node will generally not exceed –1V. However, in some applications, board resistance and inductance may result in the HS node exceeding this stated voltage transiently. If negative transient ...
Document
... intense and electrons get pulled out from covalent bonds, generating electron – hole pairs. Thus heavy reverse current flows. This phenomenon is called Zener Breakdown. Zener diode behaves like an ordinary diode in the forward bias mode. In the V – I characteristics of the Zener diode, it can be see ...
... intense and electrons get pulled out from covalent bonds, generating electron – hole pairs. Thus heavy reverse current flows. This phenomenon is called Zener Breakdown. Zener diode behaves like an ordinary diode in the forward bias mode. In the V – I characteristics of the Zener diode, it can be see ...
Sensor Signal Conditioning IC for Closed
... (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not supported. (2 ...
... (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not supported. (2 ...
DB_MS8886C
... possible (maximum 200pF) provided that an additional discharge resistor R C is placed as shown in Figure 2. Resistor RC simply reduces the discharge time such that the internal timing requirements are fulfilled. A typical value for RC is between 5 and 50kΩ. The sensitivity of the sensor can be influ ...
... possible (maximum 200pF) provided that an additional discharge resistor R C is placed as shown in Figure 2. Resistor RC simply reduces the discharge time such that the internal timing requirements are fulfilled. A typical value for RC is between 5 and 50kΩ. The sensitivity of the sensor can be influ ...
PowerPoint Presentation - Interfacing Methods and Circuits
... Ideally this should be zero since then the output voltage of the amplifier does not vary with the load In practice it is finite and depends on gain. Usually, output impedance is given for open loop whereas at lower gains the impedance is lower. A good amplifier will have an output resistance lower t ...
... Ideally this should be zero since then the output voltage of the amplifier does not vary with the load In practice it is finite and depends on gain. Usually, output impedance is given for open loop whereas at lower gains the impedance is lower. A good amplifier will have an output resistance lower t ...
RF Switches - EECG Toronto
... Vcon is at a positive voltage, both diodes are forward biased and are ...
... Vcon is at a positive voltage, both diodes are forward biased and are ...
Design of Z-Source Inverter for Voltage Boost Application
... power inverter has 6 switches that are controlled in order to generate an AC output from the DC input. PWM signals generated from the AT89C51 micro controller controls these 6 switches. The phase voltage is determined by the duty cycle of the PWM signals that are applied to the DCto –DC converter. A ...
... power inverter has 6 switches that are controlled in order to generate an AC output from the DC input. PWM signals generated from the AT89C51 micro controller controls these 6 switches. The phase voltage is determined by the duty cycle of the PWM signals that are applied to the DCto –DC converter. A ...
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.