Pulse Width Modulator
... control the brightness of an automotive tail lamp, and as a motor speed control for small DC fans of the type used in computer power supplies. Pulse Width Modulation A PWM circuit works by making a pulsating DC square wave with a variable on-to-off ratio. The average on time may be varied from 0 to ...
... control the brightness of an automotive tail lamp, and as a motor speed control for small DC fans of the type used in computer power supplies. Pulse Width Modulation A PWM circuit works by making a pulsating DC square wave with a variable on-to-off ratio. The average on time may be varied from 0 to ...
Evaluates: MAX1678 MAX1678 Evaluation Kit General Description Features
... The MAX1678 EV kit is shipped fully assembled and tested. Follow these steps to verify board operation. Do not turn on the power supply until all connections are completed. 1) Verify that the shunts are positioned on the jumpers as listed in Table 2 for a 3.3V output. 2) Connect a +0.87V to +3.3V su ...
... The MAX1678 EV kit is shipped fully assembled and tested. Follow these steps to verify board operation. Do not turn on the power supply until all connections are completed. 1) Verify that the shunts are positioned on the jumpers as listed in Table 2 for a 3.3V output. 2) Connect a +0.87V to +3.3V su ...
Cisco PWR-C45-1000AC= power supply unit (PWR
... Product details: Product code: PWR-C45-1000AC= EAN: 0746320735559 Manufacturer: Cisco ...
... Product details: Product code: PWR-C45-1000AC= EAN: 0746320735559 Manufacturer: Cisco ...
Inductive Coupling
... • Electromagnetic wave are reflected by most objects that are larger than half the wavelength. • The efficiency of reflection is particularly large for antennas that are in resonance with the ...
... • Electromagnetic wave are reflected by most objects that are larger than half the wavelength. • The efficiency of reflection is particularly large for antennas that are in resonance with the ...
Y4905142146
... between the supply voltages and compensated source currents in the respective phases. For unity power factor operation, φ=0, thus ɣ =0. The term Plavg is the dc or average value of the load power. The term Pdc in the above equations accounts for the losses in the VSI without any dc loads in its dc l ...
... between the supply voltages and compensated source currents in the respective phases. For unity power factor operation, φ=0, thus ɣ =0. The term Plavg is the dc or average value of the load power. The term Pdc in the above equations accounts for the losses in the VSI without any dc loads in its dc l ...
MSP-600 series
... 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to EMI testing of component power supplies. (as available on http:// ...
... 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to EMI testing of component power supplies. (as available on http:// ...
VCC power off, brownout, and power on
... POR maximum threshold (VPOR MAX). During this time, all operations are disabled and the device will not respond to any commands. After power-on, the device will be in the standby mode. If the first operation to the device after power-on will be a program or erase operation, then the operation cannot ...
... POR maximum threshold (VPOR MAX). During this time, all operations are disabled and the device will not respond to any commands. After power-on, the device will be in the standby mode. If the first operation to the device after power-on will be a program or erase operation, then the operation cannot ...
circuit description - Allegro MicroSystems
... capacitor (C22 on the U1 current sense input) with a current proportional to the input voltage (from resistors R8 and R9). The C22 voltage is reset to near zero during the MOSFETs’ OFF period through Schottky D18 connected to the U1 gate drive output. The actual Q1 current is ‘ORed’ to the current s ...
... capacitor (C22 on the U1 current sense input) with a current proportional to the input voltage (from resistors R8 and R9). The C22 voltage is reset to near zero during the MOSFETs’ OFF period through Schottky D18 connected to the U1 gate drive output. The actual Q1 current is ‘ORed’ to the current s ...
Ideal Voltage Sources
... ★ The output voltage of an ideal source can be a function of time. ★ By convention the direction of positive current flow out of a voltage source is out of the positive terminal. ...
... ★ The output voltage of an ideal source can be a function of time. ★ By convention the direction of positive current flow out of a voltage source is out of the positive terminal. ...
Application of network analyzer in measuring the
... (1) The use of differential probes should be avoided. In the case of isolated power supplies, if possible, short the ground of secondary, primary and control circuitry. (2) While measuring for switching power supplies, the use of lowest bandwidth results in best noise rejection. For a faster sweep s ...
... (1) The use of differential probes should be avoided. In the case of isolated power supplies, if possible, short the ground of secondary, primary and control circuitry. (2) While measuring for switching power supplies, the use of lowest bandwidth results in best noise rejection. For a faster sweep s ...
Functional Ecology (Boreal Ecosystems)
... – For a giver power less energy needs to be stored in each cycle at higher frequency – Energy storage elements as transformers, inductors and capacitors can be designed smaller. – Smaller and lighter designs – Better energy efficiency can also be achieved ...
... – For a giver power less energy needs to be stored in each cycle at higher frequency – Energy storage elements as transformers, inductors and capacitors can be designed smaller. – Smaller and lighter designs – Better energy efficiency can also be achieved ...
SX440 AUTOMATIC VOLTAGE REGULATOR (AVR)
... For optimum setting, the LED should illuminate as the frequency falls just below nominal, i.e. 47Hz on a 50Hz system or 57Hz on a 60Hz system. DROOP ADJUSTMENT Generators intended for parallel operation are fitted with a quadrature droop C.T. which provides a power factor dependent signal for the AV ...
... For optimum setting, the LED should illuminate as the frequency falls just below nominal, i.e. 47Hz on a 50Hz system or 57Hz on a 60Hz system. DROOP ADJUSTMENT Generators intended for parallel operation are fitted with a quadrature droop C.T. which provides a power factor dependent signal for the AV ...
IS31LT3135 - Integrated Silicon Solution
... When the main channel works，it is a constant current source driving the main LED and the current is set by an external resistor connected to the ISET pin. It needs only 0.1v dropout voltage for 200mA output current. When the sub-channel works, the chip will pull down the sub LED’s cathode to ground. ...
... When the main channel works，it is a constant current source driving the main LED and the current is set by an external resistor connected to the ISET pin. It needs only 0.1v dropout voltage for 200mA output current. When the sub-channel works, the chip will pull down the sub LED’s cathode to ground. ...
Buck converter
A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.