335-project2 - UTK-EECS
... ECE 335 PROJECT II Design, build, test and simulate a transistor voltage amplifier according to the specifications given below. SPECIFICATIONS: (a) The small signal voltage gain (vo/vs) must be -10 10% at a signal frequency of 10 kHz (midband) with an output signal level of 5 V peak-peak. Follow t ...
... ECE 335 PROJECT II Design, build, test and simulate a transistor voltage amplifier according to the specifications given below. SPECIFICATIONS: (a) The small signal voltage gain (vo/vs) must be -10 10% at a signal frequency of 10 kHz (midband) with an output signal level of 5 V peak-peak. Follow t ...
An innovative method for low-EMI PWM generation in inverters Cristian Grecu, Cosmin-Andrei Tămaş, Mircea Bodea
... Cristian Grecu, Cosmin-Andrei Tămaş, Mircea Bodea ...
... Cristian Grecu, Cosmin-Andrei Tămaş, Mircea Bodea ...
DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit PDF
... initiates a clock cycle and the PWM output at pin 6 goes high. This is fed to transistor Q1 which pulls the Rt/Ct input at pin 4 low, thus "freezing" the oscillator, while keeping the PWM output high. Once a valid fault (greater than 1 volt) is received at the current sense input (pin 3), the output ...
... initiates a clock cycle and the PWM output at pin 6 goes high. This is fed to transistor Q1 which pulls the Rt/Ct input at pin 4 low, thus "freezing" the oscillator, while keeping the PWM output high. Once a valid fault (greater than 1 volt) is received at the current sense input (pin 3), the output ...
Level-Shifting MOSFET Driver
... used to control the DC/DC buck converter switch. Figure 1 shows the level-shifting MOSFET driver implemented with test circuitry as indicated by the dashed boxes. The PWM signal is generated by using the wire-ORed open-collector pins to pull down the solar panel voltage through a pull-down resistor. ...
... used to control the DC/DC buck converter switch. Figure 1 shows the level-shifting MOSFET driver implemented with test circuitry as indicated by the dashed boxes. The PWM signal is generated by using the wire-ORed open-collector pins to pull down the solar panel voltage through a pull-down resistor. ...
Presentación de PowerPoint - cei@upm
... topologies that increase the efficiency of the RF power amplifiers. A cornerstone in this system is the envelope amplifier because high dynamic range and high efficiency are required at the same time. Here we propose a solution based on a high switching frequency two phases buck converter using RF S ...
... topologies that increase the efficiency of the RF power amplifiers. A cornerstone in this system is the envelope amplifier because high dynamic range and high efficiency are required at the same time. Here we propose a solution based on a high switching frequency two phases buck converter using RF S ...
Q - VU Tube
... cross the sending and receiving pins in order to stop any data collision. Just as EIA 232 DTE-DCE cable does. The solution is a NULL Modem. A null modem provide DTA – DTE interface w/o DCEs .But why use a Null Modem. If all you need is the interface, why not just a standard EIA 232 cable. a null mod ...
... cross the sending and receiving pins in order to stop any data collision. Just as EIA 232 DTE-DCE cable does. The solution is a NULL Modem. A null modem provide DTA – DTE interface w/o DCEs .But why use a Null Modem. If all you need is the interface, why not just a standard EIA 232 cable. a null mod ...
TS-21 "Hellfire Modulator" owner`s manual
... textbook on pulse and switching circuits using vacuum tubes. Its behavior is so peculiar that we just HAD to make an audio waveform processor out of it! The PWM is actually a very crude "monostable multivibrator". Because it uses positive feedback, it belongs to a class of designs known as "metastab ...
... textbook on pulse and switching circuits using vacuum tubes. Its behavior is so peculiar that we just HAD to make an audio waveform processor out of it! The PWM is actually a very crude "monostable multivibrator". Because it uses positive feedback, it belongs to a class of designs known as "metastab ...
Evaluates: MAX16803 MAX16803 Evaluation Kit General Description Features
... the MAX16803 current regulator. This EV kit is capable of supplying regulated output currents of up to 350mA and can run at supply voltages between 6.5V and 40V. If the supply voltage is above the LED operating voltage by more than 7.5V, then the maximum output current should be limited to prevent t ...
... the MAX16803 current regulator. This EV kit is capable of supplying regulated output currents of up to 350mA and can run at supply voltages between 6.5V and 40V. If the supply voltage is above the LED operating voltage by more than 7.5V, then the maximum output current should be limited to prevent t ...
DMD42850
... Analog voltage input to the onboard pulse width modulator. Decreasing this voltage increases the ON time of the onboard PWM resulting in increased brightness. The inverter is full ON when this voltage is near inverter ground. ...
... Analog voltage input to the onboard pulse width modulator. Decreasing this voltage increases the ON time of the onboard PWM resulting in increased brightness. The inverter is full ON when this voltage is near inverter ground. ...
BASE Power Overview 2016
... Power supplies for FPGAs, uProcessor, DSPs 3 Sequenced Outputs – can be cascaded for and digital ASICs more channels Multiple rail systems that need sequencing to control in-rush currents or latch-up conditions. ...
... Power supplies for FPGAs, uProcessor, DSPs 3 Sequenced Outputs – can be cascaded for and digital ASICs more channels Multiple rail systems that need sequencing to control in-rush currents or latch-up conditions. ...
PWM
... To fulfill partial power requirements, variable resistance devices such as rheostats were used to control the current entering a device (i.e. sewing machines) These devices suffered from major energy losses from heat in the resistor elements. Other device power control devices included voltage stepp ...
... To fulfill partial power requirements, variable resistance devices such as rheostats were used to control the current entering a device (i.e. sewing machines) These devices suffered from major energy losses from heat in the resistor elements. Other device power control devices included voltage stepp ...
Digital Electronics 13.4b
... 1. Design the details of a 4-bit Successive Approximation Converter according to the block diagram given in class (i.e. design the DAC, SAR, control logic, and latch). 2. A dual slope ADC uses a 16-bit counter and a 4MHz clock rate. The maximum input voltage is +10V. The maximum integrator output vo ...
... 1. Design the details of a 4-bit Successive Approximation Converter according to the block diagram given in class (i.e. design the DAC, SAR, control logic, and latch). 2. A dual slope ADC uses a 16-bit counter and a 4MHz clock rate. The maximum input voltage is +10V. The maximum integrator output vo ...
Analog Electronics and Communication lab
... 1. State maximum power transfer theorem. Maximum power is delivered from a source to a load when the load resistance is equal to the source resistance, assuming that the load resistance is a variable. 2. Define Resonance Resonance is defined as a phenomenon in an AC circuit where applied voltage and ...
... 1. State maximum power transfer theorem. Maximum power is delivered from a source to a load when the load resistance is equal to the source resistance, assuming that the load resistance is a variable. 2. Define Resonance Resonance is defined as a phenomenon in an AC circuit where applied voltage and ...
DmD43174 - Endicott Research Group, Inc.
... Analog voltage input to the onboard pulse width modulator. Decreasing this voltage increases the ON time of the onboard PWM resulting in increased brightness. The inverter is full ON when this voltage is near inverter ground. ...
... Analog voltage input to the onboard pulse width modulator. Decreasing this voltage increases the ON time of the onboard PWM resulting in increased brightness. The inverter is full ON when this voltage is near inverter ground. ...
IntegraPower is the third type of energy saving device
... area (shown in yellow above) can be met in less time. If this time period still includes the peak voltage of the AC sine wave then the motor speed is maintained. The power factor can be improved for the AC motor and the utility provider will deliver less energy resulting in a reduced energy bill. Wh ...
... area (shown in yellow above) can be met in less time. If this time period still includes the peak voltage of the AC sine wave then the motor speed is maintained. The power factor can be improved for the AC motor and the utility provider will deliver less energy resulting in a reduced energy bill. Wh ...
instructions to tenderers
... of the phase voltage LIN(A, B, C) from the line-to line voltages; channel E switched into channel D for multiplexing. •Filter: Low pass active filter of the 2° order required for the recovery of the fundamental wave out of the PWM signals. Cut-off frequency: 1 kHz. Space vector indicator: •Voltage v ...
... of the phase voltage LIN(A, B, C) from the line-to line voltages; channel E switched into channel D for multiplexing. •Filter: Low pass active filter of the 2° order required for the recovery of the fundamental wave out of the PWM signals. Cut-off frequency: 1 kHz. Space vector indicator: •Voltage v ...
Chapter 4: Analog Output - Embedded
... PWM and filter acts just like a DAC. Alternatively, if we switch the current flowing in an inductive load, below right, then the inductance has an averaging effect on the current flowing through it. This is important, as the windings of any motor are inductive, so we can use this technique for motor ...
... PWM and filter acts just like a DAC. Alternatively, if we switch the current flowing in an inductive load, below right, then the inductance has an averaging effect on the current flowing through it. This is important, as the windings of any motor are inductive, so we can use this technique for motor ...
Lecture 2: More on I/O and Memory
... If the dead-band generator is disabled, pwmA and pwmB signals will not be modified If the dead-band generator is enabled, the pwmB signal is lost and two PWM signals are generated based on the pwmA signal, pwmA’ and pwmB’ pwmA’ is pwmA with the rising edge delayed pwmB’ is the iversion of pw ...
... If the dead-band generator is disabled, pwmA and pwmB signals will not be modified If the dead-band generator is enabled, the pwmB signal is lost and two PWM signals are generated based on the pwmA signal, pwmA’ and pwmB’ pwmA’ is pwmA with the rising edge delayed pwmB’ is the iversion of pw ...
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.