Using voltage regulator to convert 5
... regulators. Linear regulators are based on devices that operate in their linear region, versus, switching regulators are based on a device forced to act as an on/off switch. Using adjustable regulator such as LM117 gives the advantage of outputting two selectable regulated voltages. For a circuit wh ...
... regulators. Linear regulators are based on devices that operate in their linear region, versus, switching regulators are based on a device forced to act as an on/off switch. Using adjustable regulator such as LM117 gives the advantage of outputting two selectable regulated voltages. For a circuit wh ...
abstract - Engineering For Change
... This circuit is configured in astable mode of operation, which is basic oscillator circuit using a 555 type of timer. The circuit is also sometimes referred to as a free running oscillator, with the oscillation frequency given by f=1.46/((Ra +2Rb)*c). Initially, capacitor C charged towards 2/3 V + v ...
... This circuit is configured in astable mode of operation, which is basic oscillator circuit using a 555 type of timer. The circuit is also sometimes referred to as a free running oscillator, with the oscillation frequency given by f=1.46/((Ra +2Rb)*c). Initially, capacitor C charged towards 2/3 V + v ...
Analog Current / Voltage to Four Adjustable Trip Level Relay Outputs
... PRODUCT DESCRIPTION The ATL accepts an analog voltage or current input signal and controls four relays. Each relay has an adjustable trip point which is set by a multi-turn trimmer potentiometer. Each relay is activated when the input signal is equal to or greater than the trip point setting. The re ...
... PRODUCT DESCRIPTION The ATL accepts an analog voltage or current input signal and controls four relays. Each relay has an adjustable trip point which is set by a multi-turn trimmer potentiometer. Each relay is activated when the input signal is equal to or greater than the trip point setting. The re ...
Spectrum Estimation Methods for Signal Analysis in the Supply
... electric energy consumers and also for the manufactures of electric and electronic equipment. The voltage waveform is expected to be a pure sinusoidal with a given frequency and amplitude. Frequency power converters and arc furnaces generate a wide spectrum of harmonic components which deteriorate t ...
... electric energy consumers and also for the manufactures of electric and electronic equipment. The voltage waveform is expected to be a pure sinusoidal with a given frequency and amplitude. Frequency power converters and arc furnaces generate a wide spectrum of harmonic components which deteriorate t ...
Regulating Pulse Width Modulator
... accuracy. The circuitry is fully active at supply voltages above +7V, and provides up to 20mA of load current to external circuitry at +5.0V. In systems where additional current is required, an external PNP transistor can be used to boost the available current. A rugged low frequency audio-type tran ...
... accuracy. The circuitry is fully active at supply voltages above +7V, and provides up to 20mA of load current to external circuitry at +5.0V. In systems where additional current is required, an external PNP transistor can be used to boost the available current. A rugged low frequency audio-type tran ...
MAX748A/MAX763A 3.3V, Step-Down, Current-Mode PWM DC-DC Converters __________________General Description
... error-amplifier output voltage, limiting surge currents at power-up by slowly increasing the cycle-by-cycle current-limit threshold. Table 1 lists timing characteristics for selected capacitor values and circuit conditions. The overcurrent comparator trips when the load exceeds approximately 1.2A. W ...
... error-amplifier output voltage, limiting surge currents at power-up by slowly increasing the cycle-by-cycle current-limit threshold. Table 1 lists timing characteristics for selected capacitor values and circuit conditions. The overcurrent comparator trips when the load exceeds approximately 1.2A. W ...
This paper presents a primary-parallel secondary
... generated by photovoltaic (PV) arrays. However, in residential applications, the energy yield is jeopardized due to mismatches and partial-shading. Distributed maximum power point tracking (DMPPT) architectures, in both dc–dc and dc–ac systems, improve the energy harvesting capability by means of a ...
... generated by photovoltaic (PV) arrays. However, in residential applications, the energy yield is jeopardized due to mismatches and partial-shading. Distributed maximum power point tracking (DMPPT) architectures, in both dc–dc and dc–ac systems, improve the energy harvesting capability by means of a ...
Series 94 Peaktronics Positioner
... The DHC positioner is a high performance, high resolution digital positioner. A simple threebutton control is used to configure ALL parameters that the unit needs for a variety of applications, and eliminates the need for special meters and/or tools for calibration. As long as there is supply power, ...
... The DHC positioner is a high performance, high resolution digital positioner. A simple threebutton control is used to configure ALL parameters that the unit needs for a variety of applications, and eliminates the need for special meters and/or tools for calibration. As long as there is supply power, ...
BSX1-80/200/250IOV1HA
... BYD Microelectronics Co., Ltd. (short for BME) exerts the greatest possible effort to ensure high quality and reliability. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibilit ...
... BYD Microelectronics Co., Ltd. (short for BME) exerts the greatest possible effort to ensure high quality and reliability. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibilit ...
No Slide Title - Faculty Server Contact
... – ASK and PSK bandwidth directly related to bit rate – FSK bandwidth related to data rate for lower frequencies, but to offset of modulated frequency from carrier at high frequencies – (See Stallings for math) ...
... – ASK and PSK bandwidth directly related to bit rate – FSK bandwidth related to data rate for lower frequencies, but to offset of modulated frequency from carrier at high frequencies – (See Stallings for math) ...
AN9601: Using the HI7190 with Single +5V Supply
... situation more closely than existing non-mechanical circuits. ...
... situation more closely than existing non-mechanical circuits. ...
Recent Developments on Micro-SMES System Project at the
... choice is the compromise solution between the minimum size and the minimum cost option (see Figs. 1 - 3). Even if the size of the reference configuration is not optimized, it remains in the limits for an industrial use. In Table 1 are listed the main data of the electromagnetic reference configurati ...
... choice is the compromise solution between the minimum size and the minimum cost option (see Figs. 1 - 3). Even if the size of the reference configuration is not optimized, it remains in the limits for an industrial use. In Table 1 are listed the main data of the electromagnetic reference configurati ...
ONEAC CDR Series Power Conditioners (11 - 19 kVA)
... Semiconductor processing and test equipment functions by controlling and interpreting low level, high speed, digital and analog electrical signals. Transient voltage events or disturbances on the incoming AC power service confuse and disrupt that process. As a result, tests may not correlate, system ...
... Semiconductor processing and test equipment functions by controlling and interpreting low level, high speed, digital and analog electrical signals. Transient voltage events or disturbances on the incoming AC power service confuse and disrupt that process. As a result, tests may not correlate, system ...
Abstract - Induction motor is used in majority of the
... the current coils of other instruments and relays need not be connected directly to high voltage lines. In other words, these instruments and relays are insulated from high voltages. CT’s also step down the current in a known ratio. The use of CT means that relatively small and accurate instruments, ...
... the current coils of other instruments and relays need not be connected directly to high voltage lines. In other words, these instruments and relays are insulated from high voltages. CT’s also step down the current in a known ratio. The use of CT means that relatively small and accurate instruments, ...
TDA8172 - PS electronic, sro
... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implicatio ...
... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implicatio ...
IIR - WDM Next Generation Optical Networking
... The photo-detector provides a voltage signal which is linearly proportional to the perpendicular position error (error offset) of the PV panel. This is implemented by putting two light sensitive resistors in an electrical bridge which is connected to a unity gain differential operational amplifier c ...
... The photo-detector provides a voltage signal which is linearly proportional to the perpendicular position error (error offset) of the PV panel. This is implemented by putting two light sensitive resistors in an electrical bridge which is connected to a unity gain differential operational amplifier c ...
Low-Noise Amplifier
... Output of PFD for locked state • In locked state, narrow pulses are generated in both UP/DWN outputs. • The width of these pulses determines the amount of noise introduced to the VCO output by the charge-pump. • Timing mismatch between the UP/DWN pulses is a source of spurious tones. ...
... Output of PFD for locked state • In locked state, narrow pulses are generated in both UP/DWN outputs. • The width of these pulses determines the amount of noise introduced to the VCO output by the charge-pump. • Timing mismatch between the UP/DWN pulses is a source of spurious tones. ...
SC446 - Semtech
... can drive up to thirty WLEDs in 3 strings with current up to 100mA per string. The string-to-string current matching is 2% typical, 3% maximum. The overall efficiency is greater than 90% due to the low current sense voltage and a low-impedance internal power switch. The wide PWM dimming range boasts ...
... can drive up to thirty WLEDs in 3 strings with current up to 100mA per string. The string-to-string current matching is 2% typical, 3% maximum. The overall efficiency is greater than 90% due to the low current sense voltage and a low-impedance internal power switch. The wide PWM dimming range boasts ...
Problem Set 9
... Set 3 Problem 9 using the dsPIC33EP64MC502 microcontroller, and demonstrate their circuit to the laboratory instructor during the grading session on either Monday April 20 or Tuesday April 21 from 6:30 pm to 8:30 pm in 302 EE West. To earn full credit you must follow the instructions below. 1. Imple ...
... Set 3 Problem 9 using the dsPIC33EP64MC502 microcontroller, and demonstrate their circuit to the laboratory instructor during the grading session on either Monday April 20 or Tuesday April 21 from 6:30 pm to 8:30 pm in 302 EE West. To earn full credit you must follow the instructions below. 1. Imple ...
inverter - updated
... b) Multiple pulse width modulation - MPWM -By using several pulses, (p=5) The harmonic content are reduced compared to single fo will set the output PWM frequency while fc will - the DF isdetermines also reduced the pulses per half cycle,p. significantly. ...
... b) Multiple pulse width modulation - MPWM -By using several pulses, (p=5) The harmonic content are reduced compared to single fo will set the output PWM frequency while fc will - the DF isdetermines also reduced the pulses per half cycle,p. significantly. ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.