Brushless DC Motor Controller (Rev. B)
... chip to modulate either the low-side switches only, or both upper and lower switches, allowing the user to minimize switching losses in less demanding two-quadrant applications. The device includes a differential current-sense amplifier and absolute-value circuit which provide an accurate reconstruc ...
... chip to modulate either the low-side switches only, or both upper and lower switches, allowing the user to minimize switching losses in less demanding two-quadrant applications. The device includes a differential current-sense amplifier and absolute-value circuit which provide an accurate reconstruc ...
construction of 400 kv d/c overhead transmissiion ine by
... inductive reactance and capacitive reactance will be substantial. Besides, the voltage being 400kV, the corona effect will also be predominant. It is also possible that the line under reference may also need to carry additional load in future. Therefore, it will be worthwhile to deploy Twin ACSR Mo ...
... inductive reactance and capacitive reactance will be substantial. Besides, the voltage being 400kV, the corona effect will also be predominant. It is also possible that the line under reference may also need to carry additional load in future. Therefore, it will be worthwhile to deploy Twin ACSR Mo ...
P84579
... NOTE: NFPA 72/ANSI 117.1 conforms to ADAAG Equivalent Facilitation Guidelines in using fewer, higher intensity strobes within the same protected area. CAUTION: Check the installation instructions of the manufacturers of other equipment used in the system for any guidelines or restrictions on wiring ...
... NOTE: NFPA 72/ANSI 117.1 conforms to ADAAG Equivalent Facilitation Guidelines in using fewer, higher intensity strobes within the same protected area. CAUTION: Check the installation instructions of the manufacturers of other equipment used in the system for any guidelines or restrictions on wiring ...
Estimating the Harmonic Contributions of system Ali Ajami
... (THD) is used for finding the share of harmonic distortion from utility and customer sides. The disadvantage of this method is that the THD value cannot show the variation of contributions caused by changes in phase angle of harmonic sources. In [8-11], several multiple harmonic sources localization ...
... (THD) is used for finding the share of harmonic distortion from utility and customer sides. The disadvantage of this method is that the THD value cannot show the variation of contributions caused by changes in phase angle of harmonic sources. In [8-11], several multiple harmonic sources localization ...
Automatic Submersible Pump OFF with LCD Display Voltage and
... dissipation of that resistor in a particular circuit: this is mainly of concern in power electronics applications. Resistors with higher power ratings are physically larger and may require heat sinks. In a high-voltage circuit, attention must sometimes be paid to the rated maximum working voltage of ...
... dissipation of that resistor in a particular circuit: this is mainly of concern in power electronics applications. Resistors with higher power ratings are physically larger and may require heat sinks. In a high-voltage circuit, attention must sometimes be paid to the rated maximum working voltage of ...
Node-Voltage Method, Lecture Set 6
... • The fundamental rule is this: If there are ne essential nodes, you need to write ne-1 equations. Remember that one essential node is the reference node, and we do not write a KCL equation for the reference node. • If there are dependent sources present, then the number of equations has to increase ...
... • The fundamental rule is this: If there are ne essential nodes, you need to write ne-1 equations. Remember that one essential node is the reference node, and we do not write a KCL equation for the reference node. • If there are dependent sources present, then the number of equations has to increase ...
PDF Catalog - Newmar Power
... Phase Three “Smart” battery charging technology is now available in a wide range of power levels, allowing you to select the right size, features and flexibility you require for virtually any application from providing quick recharge of auxiliary batteries in vehicles parked in the station house, to ...
... Phase Three “Smart” battery charging technology is now available in a wide range of power levels, allowing you to select the right size, features and flexibility you require for virtually any application from providing quick recharge of auxiliary batteries in vehicles parked in the station house, to ...
IGBT or MOSFET: Choose Wisely
... temperature, when switching at the lower frequency. This illustrates the subject of this paper, namely there is no iron clad rule which can be used to determine which device will offer the best performance in a specific type of circuit. Depending upon the exact power level, devices being considered, ...
... temperature, when switching at the lower frequency. This illustrates the subject of this paper, namely there is no iron clad rule which can be used to determine which device will offer the best performance in a specific type of circuit. Depending upon the exact power level, devices being considered, ...
Successful PCB Grounding with Mixed-Signal
... We mention ADCs and DACs as these are typically the components that cause concerns with grounding for both the analog and digital signals. Analog circuits tend to work with signals that vary in a smoother, continuous fashion and for which small changes in voltage or current are meaningful. Digital c ...
... We mention ADCs and DACs as these are typically the components that cause concerns with grounding for both the analog and digital signals. Analog circuits tend to work with signals that vary in a smoother, continuous fashion and for which small changes in voltage or current are meaningful. Digital c ...
ADA4410-6 数据手册DataSheet 下载
... The ADA4410-6 offers 2:1 multiplexers on its inputs that can be used in applications where multiple sources of video exist. The ADA4410-6 can operate on a single +5 V supply as well as ±5 V supplies. Single-supply operation is ideal for applications where power consumption is critical. The disable f ...
... The ADA4410-6 offers 2:1 multiplexers on its inputs that can be used in applications where multiple sources of video exist. The ADA4410-6 can operate on a single +5 V supply as well as ±5 V supplies. Single-supply operation is ideal for applications where power consumption is critical. The disable f ...
CHAPTER 3 Special-Purpose Diodes
... Zener diode also can be used in ac applications to limit voltage swings to desired level a) To limit the +ve peak of a signal voltage to the selected zener voltage - During –ve alternation, zener arts as FB diode & limits the –ve voltage to -0.7V b) Zener diode is turn around -The –ve peak is by zen ...
... Zener diode also can be used in ac applications to limit voltage swings to desired level a) To limit the +ve peak of a signal voltage to the selected zener voltage - During –ve alternation, zener arts as FB diode & limits the –ve voltage to -0.7V b) Zener diode is turn around -The –ve peak is by zen ...
Design and Implement Harmonics Injection Source for Voltage
... with the harmonic distortion requirement and investigating flawed design. Monitoring and measurement of the harmonics is necessarily considered in the power system operation. According to IEEE Standard 519 [4], the harmonic measurement should be taken up to 50th harmonics. However, it is required 10 ...
... with the harmonic distortion requirement and investigating flawed design. Monitoring and measurement of the harmonics is necessarily considered in the power system operation. According to IEEE Standard 519 [4], the harmonic measurement should be taken up to 50th harmonics. However, it is required 10 ...
2EM Ohm`s Law and Simple DC Circuits
... Vary the potential difference applied to the circuit by turning the knob of the potential divider. Record the current I for at least eight different values of the potential difference V between 0 and 4 volts. Repeat this process for the orange resistor, the blue and orange resistors in series, and ...
... Vary the potential difference applied to the circuit by turning the knob of the potential divider. Record the current I for at least eight different values of the potential difference V between 0 and 4 volts. Repeat this process for the orange resistor, the blue and orange resistors in series, and ...
AUAV3 basic connections
... CSU (BATTERY VOLTAGE) – measured battery voltage from the ACSP1 CSI (CURRENT SENSING) – measured current from the ACSP1 5PWR (5V POWER SUPPLY) – 5V DC power from the ACSP1 GND Battery voltage sensing and current sensing have 1:1 resistor dividers. Also there is additional voltage 3:1 divider over th ...
... CSU (BATTERY VOLTAGE) – measured battery voltage from the ACSP1 CSI (CURRENT SENSING) – measured current from the ACSP1 5PWR (5V POWER SUPPLY) – 5V DC power from the ACSP1 GND Battery voltage sensing and current sensing have 1:1 resistor dividers. Also there is additional voltage 3:1 divider over th ...
Section Questions
... Why don’t industrial spray painters get spray paint on the floor and walls behind the object they are painting? The paint is attracted to the surface it is painting, because it is the opposite charge of the paint. That attraction is so strong that it will be more attracted to the object instead of ...
... Why don’t industrial spray painters get spray paint on the floor and walls behind the object they are painting? The paint is attracted to the surface it is painting, because it is the opposite charge of the paint. That attraction is so strong that it will be more attracted to the object instead of ...
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.