grounding system and lightening / ground fault
... Power System (transmission line voltage can go up to 500 Kv or 500, 000 V) touches the Earth Ground due to a fault in the system. Thus, large amounts of current can also be injected into the Earth Ground when, for example, high voltage lines from sub-stations or transmission towers develop fault to ...
... Power System (transmission line voltage can go up to 500 Kv or 500, 000 V) touches the Earth Ground due to a fault in the system. Thus, large amounts of current can also be injected into the Earth Ground when, for example, high voltage lines from sub-stations or transmission towers develop fault to ...
ITU-T Rec. J.14 (11/88) Relative levels and impedances on an
... The voltage level diagram for an international sound-programme connection, however made up, should be such that the voltage levels shown will not exceed the maximum undistorted power which an amplifier can deliver to a sound-programme link when a peak voltage (i.e. +9 dB) is applied to a zero relati ...
... The voltage level diagram for an international sound-programme connection, however made up, should be such that the voltage levels shown will not exceed the maximum undistorted power which an amplifier can deliver to a sound-programme link when a peak voltage (i.e. +9 dB) is applied to a zero relati ...
ISL8105B - Intersil
... This is a multiplexed pin. During soft-start and normal converter operation, this pin represents the output of the error amplifier. Use COMP/EN, in combination with the FB pin, to compensate the voltage-control feedback loop of the converter. Pulling COMP/EN low (VDISABLE = 0.4V nominal) will disabl ...
... This is a multiplexed pin. During soft-start and normal converter operation, this pin represents the output of the error amplifier. Use COMP/EN, in combination with the FB pin, to compensate the voltage-control feedback loop of the converter. Pulling COMP/EN low (VDISABLE = 0.4V nominal) will disabl ...
AN-6075 Compact Green-Mode Adapter Using FSQ500L for Low Cost 1. Introduction www.fairchildsemi.com
... However, even when the SMPS is in normal operation, the over load protection circuit can be triggered during the load transition. To avoid this undesired operation, the overload protection circuit is designed to trigger after a specified time to determine whether it is a transient situation or an ov ...
... However, even when the SMPS is in normal operation, the over load protection circuit can be triggered during the load transition. To avoid this undesired operation, the overload protection circuit is designed to trigger after a specified time to determine whether it is a transient situation or an ov ...
Section G3: Differential Amplifiers
... ¾ The notation of the emitter resistor RE has been changed to REE since is common to both amplifiers. As we will see shortly, this resistor may be the equivalent resistance of a current source as discussed in the previous section, both to save chip space and reduce fabrication complexity (transistor ...
... ¾ The notation of the emitter resistor RE has been changed to REE since is common to both amplifiers. As we will see shortly, this resistor may be the equivalent resistance of a current source as discussed in the previous section, both to save chip space and reduce fabrication complexity (transistor ...
Analog Input Module
... The Horner Electric Analog Input Module HEC-ADC-40 is compatible with the Reliance Shark PLC. It provides 4 channels of 12-bit (plus sign) input, and each channel may be configured for 0-10V or 4-20mA analog inputs. Each channel converts an analog signal into a digital value of 0-4095, and that valu ...
... The Horner Electric Analog Input Module HEC-ADC-40 is compatible with the Reliance Shark PLC. It provides 4 channels of 12-bit (plus sign) input, and each channel may be configured for 0-10V or 4-20mA analog inputs. Each channel converts an analog signal into a digital value of 0-4095, and that valu ...
Warnings, information and notes regarding designation of the product
... By qualified personnel only. ISKRA Company assumes no responsibility in connection with installation This booklet contains instructions for installation and use of measuring instrument. Installation and use of a device also includes handling with dangerous currents and voltages therefore should be i ...
... By qualified personnel only. ISKRA Company assumes no responsibility in connection with installation This booklet contains instructions for installation and use of measuring instrument. Installation and use of a device also includes handling with dangerous currents and voltages therefore should be i ...
Crct-dsn-home-ent-audio+EMC-100818
... • These are all good reasons to avoid using capacitors made from materials like Y5V! • We recommend using capacitors made from materials like X5R or better with 5% tolerance. • Film capacitors may be required in the most demanding applications. • Capacitor voltage rating should be at least twice the ...
... • These are all good reasons to avoid using capacitors made from materials like Y5V! • We recommend using capacitors made from materials like X5R or better with 5% tolerance. • Film capacitors may be required in the most demanding applications. • Capacitor voltage rating should be at least twice the ...
Ohm`s Law Lab
... 5. Using the voltage from your voltmeter and the current from your ammeter, use Ohm’s Law to calculate the theoretical Resistance #1 from your experiment. Show GUESS. 6. Using the voltage from your voltmeter and the current from your ammeter, use Ohm’s Law to calculate the theoretical Resistance #2 ...
... 5. Using the voltage from your voltmeter and the current from your ammeter, use Ohm’s Law to calculate the theoretical Resistance #1 from your experiment. Show GUESS. 6. Using the voltage from your voltmeter and the current from your ammeter, use Ohm’s Law to calculate the theoretical Resistance #2 ...
Circuit Elements
... • A voltage source maintains a voltage across its terminals no matter what you connect to those terminals. • We often think of a battery as being a voltage source. For many situations, this is fine. Other times it is not a good model. A real battery will have different voltages across its terminals ...
... • A voltage source maintains a voltage across its terminals no matter what you connect to those terminals. • We often think of a battery as being a voltage source. For many situations, this is fine. Other times it is not a good model. A real battery will have different voltages across its terminals ...
Circuits - Single-Chip Frequency Converter
... C1 and C2 are important. If C1 is too large, or C2 is too small, there's too much feedback and the oscillator waveforrn is distorted, with a strong third harmonic. If Cl is too small or C2 is too large, oscillation doesn't occur. Some suggested values for C1 and C2 are shown in Fig. 6 along with for ...
... C1 and C2 are important. If C1 is too large, or C2 is too small, there's too much feedback and the oscillator waveforrn is distorted, with a strong third harmonic. If Cl is too small or C2 is too large, oscillation doesn't occur. Some suggested values for C1 and C2 are shown in Fig. 6 along with for ...
RH-400
... that require high duty cycle, for medium size jobs. The RH-400 is adequate for welding with all types of coated electrodes up to 1/4” diameter in E-6011 and up to 3/16” diameter in 7018. ...
... that require high duty cycle, for medium size jobs. The RH-400 is adequate for welding with all types of coated electrodes up to 1/4” diameter in E-6011 and up to 3/16” diameter in 7018. ...
Gigital Phase Angle Meter
... angle meter, although other parameters, such as Frequency and Power Factor can be measured. The instrument has an analogic scale that enables it to be used as a synchroscope. The instrument is mounted in a high resistance plastic box, reduced in size and weight. The instrument has two inputs, which ...
... angle meter, although other parameters, such as Frequency and Power Factor can be measured. The instrument has an analogic scale that enables it to be used as a synchroscope. The instrument is mounted in a high resistance plastic box, reduced in size and weight. The instrument has two inputs, which ...
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.