`BUCK` STEP-DOWN DC-DC CONVERTER (Basic
... The non-isolated forward converter is not extensively used as a power supply but is popular in low cost high efficiency three terminal switching regulators and in the low power distributed power ...
... The non-isolated forward converter is not extensively used as a power supply but is popular in low cost high efficiency three terminal switching regulators and in the low power distributed power ...
PDF Version
... differential protection because the currents at the beginning and at the end of the winding are equal. B. Bauch (SSW) patented in 1925 (DRP 432837) the circuit shown in Fig. 13. The generator to be protected (G) is connected to the “auxilliary inductor” (S). This is an image of the generator and con ...
... differential protection because the currents at the beginning and at the end of the winding are equal. B. Bauch (SSW) patented in 1925 (DRP 432837) the circuit shown in Fig. 13. The generator to be protected (G) is connected to the “auxilliary inductor” (S). This is an image of the generator and con ...
B. A Parallel Circuit
... An understanding of how resistance affects voltage and current will help you understand and trouble shoot automotive electrical circuits by explaining what values you should get while using a DVOM. This will help you diagnose automotive electrical problems quicker and more accurately. ...
... An understanding of how resistance affects voltage and current will help you understand and trouble shoot automotive electrical circuits by explaining what values you should get while using a DVOM. This will help you diagnose automotive electrical problems quicker and more accurately. ...
XTBM X10 Signal Meter Operation
... Inadequate signal strength and powerline noise often cause X10 reliability problems. X10 commands are sent as a series of signal bursts coupled to the powerline. Presence of a burst signifies a logic "1", and absence a logic "0". Noise near the X10 carrier frequency can fill in those blank frames, m ...
... Inadequate signal strength and powerline noise often cause X10 reliability problems. X10 commands are sent as a series of signal bursts coupled to the powerline. Presence of a burst signifies a logic "1", and absence a logic "0". Noise near the X10 carrier frequency can fill in those blank frames, m ...
Using Thermal Limit Curves to Define Thermal Models of
... Thermal Models of Induction Motors Stanley E. Zocholl and Gabriel Benmouyal, Schweitzer Engineering Laboratories, Inc. I. INTRODUCTION IEEE Standard C37.96-2000, Guide for AC Motor Protection [1], recommends the use of overcurrent relays for overload and locked rotor protection. In these application ...
... Thermal Models of Induction Motors Stanley E. Zocholl and Gabriel Benmouyal, Schweitzer Engineering Laboratories, Inc. I. INTRODUCTION IEEE Standard C37.96-2000, Guide for AC Motor Protection [1], recommends the use of overcurrent relays for overload and locked rotor protection. In these application ...
use of arno converter and motor-generator set to convert a
... (α) of the thyristors, whereas its frequency is varied by changing the time interval (T/3=1/ (3f)), after which the next (incoming) thyristor is triggered. With a balanced load, the neutral connection is not necessary, and may be omitted, thereby suppressing all triplen harmonics. Normally, the outp ...
... (α) of the thyristors, whereas its frequency is varied by changing the time interval (T/3=1/ (3f)), after which the next (incoming) thyristor is triggered. With a balanced load, the neutral connection is not necessary, and may be omitted, thereby suppressing all triplen harmonics. Normally, the outp ...
Industrial Plugs and Sockets
... The plugs and sockets for industrial applications comply with European standards EN 60309-1 (Part 1: General requirements) and EN 60309-2 (Part 2: Dimensional interchangeability requirements for pin and contact-tube accessories of harmonised configurations), which are equivalent to international sta ...
... The plugs and sockets for industrial applications comply with European standards EN 60309-1 (Part 1: General requirements) and EN 60309-2 (Part 2: Dimensional interchangeability requirements for pin and contact-tube accessories of harmonised configurations), which are equivalent to international sta ...
PP3 Xchnge Manual.indd
... the “RED/GREEN Polarity Indicator and will also NOT react when contacting a circuit that does not match the battery voltage thin ± 0.5 volts. ...
... the “RED/GREEN Polarity Indicator and will also NOT react when contacting a circuit that does not match the battery voltage thin ± 0.5 volts. ...
Closed and Open Loop..
... A: The term “closed loop” refers to loop formed by the feed-forward path and the feed-back (i.e., feedback) path of the amplifier. In this case, the feed-forward path is formed by the op-amp, while the feedback path is formed by the feedback resistor R2. ...
... A: The term “closed loop” refers to loop formed by the feed-forward path and the feed-back (i.e., feedback) path of the amplifier. In this case, the feed-forward path is formed by the op-amp, while the feedback path is formed by the feedback resistor R2. ...
Termination - LVPECL AN-828
... 3) A fraction of the variations in VCCO are fed forward to the Thevenin equivalent VTT voltage by the bias voltage divider; 39% for VCCO=3.3V and 20% for VCCO=2.5V. Therefore control of the emitter currents, particularly for the logic low output, is not as effective as the standard VTT=VCC-2.0V term ...
... 3) A fraction of the variations in VCCO are fed forward to the Thevenin equivalent VTT voltage by the bias voltage divider; 39% for VCCO=3.3V and 20% for VCCO=2.5V. Therefore control of the emitter currents, particularly for the logic low output, is not as effective as the standard VTT=VCC-2.0V term ...
Measurements of Noise Equivalent Power for silicon detector
... noise. It’s also known as excess noise since it exceeds shot noise at frequencies below a few hundred cycles. A variety of names are used to designate the 1/f noise associated with specific devices. It’s called modulation noise in semiconductors such as transistors, diodes, and detectors; contact no ...
... noise. It’s also known as excess noise since it exceeds shot noise at frequencies below a few hundred cycles. A variety of names are used to designate the 1/f noise associated with specific devices. It’s called modulation noise in semiconductors such as transistors, diodes, and detectors; contact no ...
Microcontroller Based Numerical Mho Distance Relay
... relay. A slave relay whose contacts are connected in series with the trip circuit of circuit breaker is used to actuate the trip circuit after receiving the trip signal output by the microprocessor through an I/O port line on occurrence of fault in any one of three protective zones of the relay. VI. ...
... relay. A slave relay whose contacts are connected in series with the trip circuit of circuit breaker is used to actuate the trip circuit after receiving the trip signal output by the microprocessor through an I/O port line on occurrence of fault in any one of three protective zones of the relay. VI. ...
Final Report - Senior Design
... Ignitor – An electronic device that provides a high voltage spike (at least 2500 Volts) to initiate an arc in the lamp. Laser - Any of several devices that emit highly amplified and coherent radiation of one or more discrete frequencies. One of the most common lasers makes use of atoms in a meta sta ...
... Ignitor – An electronic device that provides a high voltage spike (at least 2500 Volts) to initiate an arc in the lamp. Laser - Any of several devices that emit highly amplified and coherent radiation of one or more discrete frequencies. One of the most common lasers makes use of atoms in a meta sta ...
English - Power Probe
... the “RED/GREEN Polarity Indicator and will also NOT react when contacting a circuit that does not match the battery voltage thin ± 0.5 volts. ...
... the “RED/GREEN Polarity Indicator and will also NOT react when contacting a circuit that does not match the battery voltage thin ± 0.5 volts. ...
Circuit Design for Realization of a 16 bit 1MS/s Successive
... input and the calibration process is time consuming. Other self calibrating techniques exist, but most require some sort of known input, or require the converter to be taken out of operation while it is being calibrated. The split ADC calibration technique, introduced in [3] and [4], does not suffer ...
... input and the calibration process is time consuming. Other self calibrating techniques exist, but most require some sort of known input, or require the converter to be taken out of operation while it is being calibrated. The split ADC calibration technique, introduced in [3] and [4], does not suffer ...
The Transformer Principle
... A transformer is an electrical device used to change the value of an alternating voltage. Transformers are widely used in electrical work. They are encountered daily, in industrial, commercial and domestic situations. They vary in size from miniature units used in electronics to huge units used in p ...
... A transformer is an electrical device used to change the value of an alternating voltage. Transformers are widely used in electrical work. They are encountered daily, in industrial, commercial and domestic situations. They vary in size from miniature units used in electronics to huge units used in p ...
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.