Signal Injection in Sensorless PMSM Drives Equipped With Inverter
... and produce bearing currents. Voltage harmonics cause acoustic noise and power losses; the losses caused by eddy currents are a special concern in high-speed solid-rotor motors. ...
... and produce bearing currents. Voltage harmonics cause acoustic noise and power losses; the losses caused by eddy currents are a special concern in high-speed solid-rotor motors. ...
Considerations for High-Gain Multistage Designs
... TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguar ...
... TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguar ...
Theoretical Problems and Solutions
... A detector of radiowaves in a radioastronomical observatory is placed on the sea beach at height h = 2 m above the sea level. After the rise of a star, radiating electromagnetic waves of wavelength = 21 cm, above the horizont the detector registers series of alternating maxima and minima. The regi ...
... A detector of radiowaves in a radioastronomical observatory is placed on the sea beach at height h = 2 m above the sea level. After the rise of a star, radiating electromagnetic waves of wavelength = 21 cm, above the horizont the detector registers series of alternating maxima and minima. The regi ...
1. Over voltage Damage Over voltage damage caused by spikes
... Voltage spikes or power transients are sharp, very brief electrical impulses in excess of the normal voltage. Typically lasting less than 200 millionths of a second. Spikes are often 50 times the normal voltage level. They can wipe out data stored in memory, alter data in progress, produce output er ...
... Voltage spikes or power transients are sharp, very brief electrical impulses in excess of the normal voltage. Typically lasting less than 200 millionths of a second. Spikes are often 50 times the normal voltage level. They can wipe out data stored in memory, alter data in progress, produce output er ...
A Multiple-Valued Logic and Memory With Combined Single
... characteristics of a SET with drain Fig. 4 shows the – voltage as a parameter. Periodic drain-current peaks are clearly seen along with a strong drain voltage dependence of current. As is often observed in semiconductor SETs, the peak heights are uneven and the positions are not perfectly periodic, ...
... characteristics of a SET with drain Fig. 4 shows the – voltage as a parameter. Periodic drain-current peaks are clearly seen along with a strong drain voltage dependence of current. As is often observed in semiconductor SETs, the peak heights are uneven and the positions are not perfectly periodic, ...
Quadrature oscillator using CDTA-based integrators
... the amplitude of a voltage across C1 does not exceed the value E, or alternatively, if the output current of the CDTA does not exceed the value of Egm, this resistance does not have any effect. The peaks above this value will cause an additional current IN which will cause conductance losses. Two ex ...
... the amplitude of a voltage across C1 does not exceed the value E, or alternatively, if the output current of the CDTA does not exceed the value of Egm, this resistance does not have any effect. The peaks above this value will cause an additional current IN which will cause conductance losses. Two ex ...
Physics 111 Fall 2007 Electric Currents and DC Circuits
... is a device that applies a strong electric shock to the chest over a time interval of a few milliseconds. The device contains a capacitor of several microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the che ...
... is a device that applies a strong electric shock to the chest over a time interval of a few milliseconds. The device contains a capacitor of several microfarads, charged to several thousand volts. Electrodes called paddles, about 8 cm across and coated with conducting paste, are held against the che ...
投影片 1
... [6]Chang-Wan Kim, et al., “An ultra-wideband CMOS low noise amplifier for 3-5-GHz UWB system,” Journal of solid state of circuit, vol. 40, pp. 544-547, Feb. 2005. ...
... [6]Chang-Wan Kim, et al., “An ultra-wideband CMOS low noise amplifier for 3-5-GHz UWB system,” Journal of solid state of circuit, vol. 40, pp. 544-547, Feb. 2005. ...
Electricity and Circuits
... a. Where should you connect the positive and negative terminals of a battery? b. Where should you connect other circuit components, such as lamps and resistors? c. How are the holes in a circuit board connected to each other? ...
... a. Where should you connect the positive and negative terminals of a battery? b. Where should you connect other circuit components, such as lamps and resistors? c. How are the holes in a circuit board connected to each other? ...
TPS75601 数据资料 dataSheet 下载
... Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 250 mV at an output current of 5 A for the TPS75633) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is ...
... Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 250 mV at an output current of 5 A for the TPS75633) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is ...
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.