Capacitor Self
... control "digital" voltage. VCO are very easy to build and are composed of a transistor (or highfrequency op-amp) with a variable capacitor (actually a varactor diode) in the feedback circuit. The digital voltage controls the bias on the diode and hence the oscillation frequency. The VCO output is ge ...
... control "digital" voltage. VCO are very easy to build and are composed of a transistor (or highfrequency op-amp) with a variable capacitor (actually a varactor diode) in the feedback circuit. The digital voltage controls the bias on the diode and hence the oscillation frequency. The VCO output is ge ...
Motor control
... Gate drivers map from MCU PWM output to MOSFET/IGBT Voltage matching and isolation MCU uses normal output voltage – gate driver ups to match gate MCU is on isolated power circuit to avoid noise issues Short circuit protection – maybe MCU algorithm should prevent turning on high/low same si ...
... Gate drivers map from MCU PWM output to MOSFET/IGBT Voltage matching and isolation MCU uses normal output voltage – gate driver ups to match gate MCU is on isolated power circuit to avoid noise issues Short circuit protection – maybe MCU algorithm should prevent turning on high/low same si ...
AM radio works like this
... Generally such devices will have a power supply which provides proper working voltages, and then the specific circuits to do the mission of the device. A VCR for example would have a power supply (a transformer and rectifier), a circuit that detects a changing magnetic field on the tape that moves p ...
... Generally such devices will have a power supply which provides proper working voltages, and then the specific circuits to do the mission of the device. A VCR for example would have a power supply (a transformer and rectifier), a circuit that detects a changing magnetic field on the tape that moves p ...
Providing Power Supply and Communication Lines
... designed to be used in high voltage battery and power systems. Current measurements across a shunt can be performed at either the high or low side of the power system. For current measurements, the IC uses a dedicated output as a reference that is connected to one of the shunt terminals (GREF), effe ...
... designed to be used in high voltage battery and power systems. Current measurements across a shunt can be performed at either the high or low side of the power system. For current measurements, the IC uses a dedicated output as a reference that is connected to one of the shunt terminals (GREF), effe ...
Electric Power Distribution
... 1. A generator at a power station produces AC electricity at V = 25,000 volts, flowing at 8,000 A. 2. A step-up transformer raises V 16x to 400,000 volts (decreases current by 16x to 500 A) ...
... 1. A generator at a power station produces AC electricity at V = 25,000 volts, flowing at 8,000 A. 2. A step-up transformer raises V 16x to 400,000 volts (decreases current by 16x to 500 A) ...
Dhea 1500 - Energy Station
... allows you to access all of the DHEA operating data, regulate and set special functions and control the shut down of Windows and Linux operating systems. An optional software (UPS SuperviSor) provides hierarchical multiserver shutdown and remote UPS management for any operating system in a heterogen ...
... allows you to access all of the DHEA operating data, regulate and set special functions and control the shut down of Windows and Linux operating systems. An optional software (UPS SuperviSor) provides hierarchical multiserver shutdown and remote UPS management for any operating system in a heterogen ...
Physics 517/617 Experiment 6A Digital Circuits
... tested using a logic probe. You should become familiar with both of these tools before you start the lab. 1) Verify the truth table for a NAND Gate (7400 chip), NOR Gate (7402), AND (7408), OR Gate (7432), and Exclusive OR Gate (7486). Use the lamp switches on the DIGI designer to signal a high or l ...
... tested using a logic probe. You should become familiar with both of these tools before you start the lab. 1) Verify the truth table for a NAND Gate (7400 chip), NOR Gate (7402), AND (7408), OR Gate (7432), and Exclusive OR Gate (7486). Use the lamp switches on the DIGI designer to signal a high or l ...
Multilevel Inverters with Imbricated Switching Cells, PWM
... where fCk and fCk+1 stand for the connection functions for Ak and Ak+1 switches and can only have two values: 0 or 1 (according to the state of the switches) [5]. For instance, if fCk =1 when the Ak switch is off and fCk=0 when the Ak switch is on. For multilevel converters, in order to obtain equal ...
... where fCk and fCk+1 stand for the connection functions for Ak and Ak+1 switches and can only have two values: 0 or 1 (according to the state of the switches) [5]. For instance, if fCk =1 when the Ak switch is off and fCk=0 when the Ak switch is on. For multilevel converters, in order to obtain equal ...
Series MH60 - hitek power supplies
... Control: The power supply is operated via the 9-way D-type connector situated on the rear panel. Full control and monitoring functions are available by this method. ...
... Control: The power supply is operated via the 9-way D-type connector situated on the rear panel. Full control and monitoring functions are available by this method. ...
3-Phase Power Factor Correction, Using Vienna
... 1. It is a 3-Phase, three level PWM rectifier, utilizing three MOSFETS, with controlled output Voltage; three wire input, not requiring any connection to Neutral. 2. It is a dual boost type PFC with continuous sinusoidal input current and unidirectional power flow 3. It needs only three active switc ...
... 1. It is a 3-Phase, three level PWM rectifier, utilizing three MOSFETS, with controlled output Voltage; three wire input, not requiring any connection to Neutral. 2. It is a dual boost type PFC with continuous sinusoidal input current and unidirectional power flow 3. It needs only three active switc ...
24V, 15A Step-Down Regulator in Sub
... Monolithic switching regulators and switching controllers together dominate the DC/DC converter market. Generally, there is little overlap in their respective applications. Controller-based solutions are favored for high performance, higher power applications where minimal power loss and top thermal ...
... Monolithic switching regulators and switching controllers together dominate the DC/DC converter market. Generally, there is little overlap in their respective applications. Controller-based solutions are favored for high performance, higher power applications where minimal power loss and top thermal ...
DC-link Voltage Control using a TI DSP. National Center of
... From this expression the controller to regulate the dc bus is designed and is in cascade with the controller in (3). 3.- DC link control Implementation Now, some images of the dc-link control implementation are showing. In figure 3 the voltage sources used to energize all the circuits involve in the ...
... From this expression the controller to regulate the dc bus is designed and is in cascade with the controller in (3). 3.- DC link control Implementation Now, some images of the dc-link control implementation are showing. In figure 3 the voltage sources used to energize all the circuits involve in the ...
CHA7115-99F
... The CHA7115 is a monolithic three-stage GaAs high power amplifier designed for X-band applications. The HPA provides typically 8W output power associated to 36% power added efficiency at 4dBcomp and a high robustness on mismatch load. This device is manufactured using 0.25µm Power pHEMT process, inc ...
... The CHA7115 is a monolithic three-stage GaAs high power amplifier designed for X-band applications. The HPA provides typically 8W output power associated to 36% power added efficiency at 4dBcomp and a high robustness on mismatch load. This device is manufactured using 0.25µm Power pHEMT process, inc ...
FDMF6707V — Extra-Small, High-Performance, High-Frequency DrMOS Module FDMF6707V — Extra-Small High-Performa Benefits
... The FDMF6707V incorporates a 3-state 3.3V PWM input gate drive design. The 3-state gate drive has both logic HIGH level and LOW level, along with a 3-state shutdown window. When the PWM input signal enters and remains within the 3-state window for a defined hold-off time (tD_HOLD-OFF), both GL and G ...
... The FDMF6707V incorporates a 3-state 3.3V PWM input gate drive design. The 3-state gate drive has both logic HIGH level and LOW level, along with a 3-state shutdown window. When the PWM input signal enters and remains within the 3-state window for a defined hold-off time (tD_HOLD-OFF), both GL and G ...
EXP:01 - NPKauto
... ABILITY TO CONNECT CURRENT COIL & PRESSURE COIL OF WATTMETER IN A WHICH POWER IS TO BE MEASURED. ...
... ABILITY TO CONNECT CURRENT COIL & PRESSURE COIL OF WATTMETER IN A WHICH POWER IS TO BE MEASURED. ...
Switches w/ Digital Control - MSU College of Engineering
... time to use these switches is when there will only be low current (<30mA) flowing through them, voltage that does not exceed ~24V, and where the R_on will not adversely affect the operation of the circuit. In certain cases, high current or voltage needs to be passed, or part of the circuit needs to ...
... time to use these switches is when there will only be low current (<30mA) flowing through them, voltage that does not exceed ~24V, and where the R_on will not adversely affect the operation of the circuit. In certain cases, high current or voltage needs to be passed, or part of the circuit needs to ...
More on Propagation
... • Modulation converts an digital computer signal into a form that can travel down an ordinary analog telephone line • There are several forms of modulation ...
... • Modulation converts an digital computer signal into a form that can travel down an ordinary analog telephone line • There are several forms of modulation ...
Vector impedance meter
... At low frequency there is no change, but to study about the component need to be analyze with wide frequency. Covers 400 Khz to 110 Mhz. ...
... At low frequency there is no change, but to study about the component need to be analyze with wide frequency. Covers 400 Khz to 110 Mhz. ...
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.