feeder ammeter clear test
... FACT can detect grounds left in place and can do so with all of the other equipment connected on the circuit such as transformers, capacitor banks, lightning arresters, etc. The FACT energizes the circuit at a low secondary voltage and measures the resulting current flow in the circuit. The FACT pow ...
... FACT can detect grounds left in place and can do so with all of the other equipment connected on the circuit such as transformers, capacitor banks, lightning arresters, etc. The FACT energizes the circuit at a low secondary voltage and measures the resulting current flow in the circuit. The FACT pow ...
lab-manual-electronic-devices-and
... reversed. As a result, the diode is reverse biased. Practically no current flows through the circuit and almost no voltage is developed across the resistor. All input voltage appears across the diode itself. Hence we conclude that when the input voltage is going through its positive half cycle, outp ...
... reversed. As a result, the diode is reverse biased. Practically no current flows through the circuit and almost no voltage is developed across the resistor. All input voltage appears across the diode itself. Hence we conclude that when the input voltage is going through its positive half cycle, outp ...
Driving the Golden DRAGON LED Application Note
... wasted in the supply. The power will still need to be dissipated by the additional LED, but more light is generated for use. This additional light reduces the required current. This means the Golden DRAGON LEDs only need to run at about 280mA, and there is still a surplus of light. By adding one LED ...
... wasted in the supply. The power will still need to be dissipated by the additional LED, but more light is generated for use. This additional light reduces the required current. This means the Golden DRAGON LEDs only need to run at about 280mA, and there is still a surplus of light. By adding one LED ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... cycle for each unit is equal to (Vout-Vin)/Vout, and it is same for each unit due to parallel configuration. A phase shift should be implemented between the timing signals of the first and the second switch. Since there are two units parallel in this converter, the phase shift value is 180 degree. 5 ...
... cycle for each unit is equal to (Vout-Vin)/Vout, and it is same for each unit due to parallel configuration. A phase shift should be implemented between the timing signals of the first and the second switch. Since there are two units parallel in this converter, the phase shift value is 180 degree. 5 ...
Components and Methods for Current Measurement
... High Temperature Hall effect and transistor current sense measurement can be adversely affected by high temperatures that can introduce non-linear measurement errors, as well as compromise the long-term measurement stability. Increased temperature can affect active devices by increasing the availabi ...
... High Temperature Hall effect and transistor current sense measurement can be adversely affected by high temperatures that can introduce non-linear measurement errors, as well as compromise the long-term measurement stability. Increased temperature can affect active devices by increasing the availabi ...
BDTIC
... (B2G), buck-boost (B2B) and SEPIC topology (max. 60V) Flexible switching frequency range: 100kHz to 500kHz (for EMC optimization) PWM and analog dimming feature to adjust average LED current TLD5045: high integration (power switch, sense resistor and fast freewheeling diode) Synchronization with ext ...
... (B2G), buck-boost (B2B) and SEPIC topology (max. 60V) Flexible switching frequency range: 100kHz to 500kHz (for EMC optimization) PWM and analog dimming feature to adjust average LED current TLD5045: high integration (power switch, sense resistor and fast freewheeling diode) Synchronization with ext ...
MAX1836/MAX1837 24V Internal Switch, 100% Duty Cycle, Step-Down Converters General Description
... from 1.25V to VIN. An internal current-limited switching MOSFET delivers load currents up to 125mA (MAX1836) or 250mA (MAX1837). The unique current-limited control scheme, operating with duty cycles up to 100%, minimizes the dropout voltage (120mV at 100mA). Additionally, this control scheme reduces ...
... from 1.25V to VIN. An internal current-limited switching MOSFET delivers load currents up to 125mA (MAX1836) or 250mA (MAX1837). The unique current-limited control scheme, operating with duty cycles up to 100%, minimizes the dropout voltage (120mV at 100mA). Additionally, this control scheme reduces ...
MAX8643 3A, 2MHz Step-Down Regulator with Integrated Switches General Description
... to (0.9 x VIN).The IC operates from 2.35V to 3.6V, making it ideal for on-board point-of-load and postregulation applications. Total output error is less than ±1% over load, line, and temperature. The MAX8643 features fixed-frequency PWM mode operation with a switching frequency range of 500kHz to 2 ...
... to (0.9 x VIN).The IC operates from 2.35V to 3.6V, making it ideal for on-board point-of-load and postregulation applications. Total output error is less than ±1% over load, line, and temperature. The MAX8643 features fixed-frequency PWM mode operation with a switching frequency range of 500kHz to 2 ...
MAX17083 Low-Voltage, Internal Switch, Step-Down Regulator General Description
... When MAX17083 operates in pulse-skipping mode, the on-time of the step-down controller terminates when both the output voltage exceeds the feedback threshold, and the current-sense voltage exceeds the idlemode current-sense threshold. Under light-load conditions, the on-time duration depends solely ...
... When MAX17083 operates in pulse-skipping mode, the on-time of the step-down controller terminates when both the output voltage exceeds the feedback threshold, and the current-sense voltage exceeds the idlemode current-sense threshold. Under light-load conditions, the on-time duration depends solely ...
Constant Current Electronic Power Supply Load By Jeff K
... that, we need to recall some more basic electronics – Kirchoffs Law. Kirchoff came up with two basic rules used in all electrical circuits that deal with how current flows in a series and parallel circuit. In a circuit where all of the elements are in series, the current through each element is equa ...
... that, we need to recall some more basic electronics – Kirchoffs Law. Kirchoff came up with two basic rules used in all electrical circuits that deal with how current flows in a series and parallel circuit. In a circuit where all of the elements are in series, the current through each element is equa ...
electronic communications systems i
... E1-1. Your first step is to construct this filter in EWB Multisim. After completing your design, start the simulation and use the oscilloscope to verify that the circuit is functioning properly. To do this, connect the oscilloscope to both the input and output of the filter and verify that the outpu ...
... E1-1. Your first step is to construct this filter in EWB Multisim. After completing your design, start the simulation and use the oscilloscope to verify that the circuit is functioning properly. To do this, connect the oscilloscope to both the input and output of the filter and verify that the outpu ...
doc - STAO
... have to fall this distance to return to the battery. The other light bulb in parallel makes no difference to the distance the Coulombs have to fall. ...
... have to fall this distance to return to the battery. The other light bulb in parallel makes no difference to the distance the Coulombs have to fall. ...
fundamentals of electricity
... The simple circuits above are called series circuits, which means all loads are connected one after another in a series. If a conductor or a load is broken, it opens the circuit. This condition does not allow the current to complete the circuit and makes the entire circuit dead. A good example of th ...
... The simple circuits above are called series circuits, which means all loads are connected one after another in a series. If a conductor or a load is broken, it opens the circuit. This condition does not allow the current to complete the circuit and makes the entire circuit dead. A good example of th ...
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.