ultrasonic radar based
... Since the speed of sound varies with altitude and atmospheric conditions, a calibration mode is quite useful. Our program is designed such that if in calibrate mode, the user can place the device a known distance 5 centimeters and send a pulse. The device then uses the time necessary for the pulse ...
... Since the speed of sound varies with altitude and atmospheric conditions, a calibration mode is quite useful. Our program is designed such that if in calibrate mode, the user can place the device a known distance 5 centimeters and send a pulse. The device then uses the time necessary for the pulse ...
Ladda PDF Lärdomsprov som heltext
... action is achieved by setting right parameters to the transformer IED’s automatic voltage control function. The automatic controllers that are going to be used are RET670 transformer IED and generator automatic voltage regulator Unitrol. The thesis includes a theoretical study about generator, step- ...
... action is achieved by setting right parameters to the transformer IED’s automatic voltage control function. The automatic controllers that are going to be used are RET670 transformer IED and generator automatic voltage regulator Unitrol. The thesis includes a theoretical study about generator, step- ...
AN109 - Interfacing RF I/Q Modulators with Popular D/A Converters
... output noise level of the modulator at this frequency, due to the noise of the LT1565-31, is then 84.2nV/√Hz. Given an RF system impedance of 50Ω, this is 45.5dB above kTB, or –128.5dBm/Hz. Note, however, that this elevation of noise level occurs only within the passband of the active filter. So the ...
... output noise level of the modulator at this frequency, due to the noise of the LT1565-31, is then 84.2nV/√Hz. Given an RF system impedance of 50Ω, this is 45.5dB above kTB, or –128.5dBm/Hz. Note, however, that this elevation of noise level occurs only within the passband of the active filter. So the ...
Proper Coil Drive is Critical to Good Relay and
... and release timing than in DC relays and often in increased contact or armature bounce or chatter. All this is dependent upon exactly where in the sine-wave the coil power is connected or removed and can even cause excessive contact bounce or chatter when initially operated. • As a result, AC relays ...
... and release timing than in DC relays and often in increased contact or armature bounce or chatter. All this is dependent upon exactly where in the sine-wave the coil power is connected or removed and can even cause excessive contact bounce or chatter when initially operated. • As a result, AC relays ...
Title Non-inductive variable reactor design and computer simulation
... Non-inductive reactor is made of two superconducting coils. A trigger coil and a limiting coil are connected in anti-parallel and are magnetically coupled well. It is used for variable reactor as shown in Fig. 1. The power source is indicated as an ideal voltage source with a source impedance. The f ...
... Non-inductive reactor is made of two superconducting coils. A trigger coil and a limiting coil are connected in anti-parallel and are magnetically coupled well. It is used for variable reactor as shown in Fig. 1. The power source is indicated as an ideal voltage source with a source impedance. The f ...
Journal of Power Electronics, Vol. 14, No. 6, pp
... DC/AC converter, which requires energy storage elements, such as battery or capacitor banks. These DVRs suffer from disadvantages, such as limited time of compensation, high cost, and bulky energy storage devices [14]-[17]. The second group of DVRs is realized without a DC link using direct AC/AC co ...
... DC/AC converter, which requires energy storage elements, such as battery or capacitor banks. These DVRs suffer from disadvantages, such as limited time of compensation, high cost, and bulky energy storage devices [14]-[17]. The second group of DVRs is realized without a DC link using direct AC/AC co ...
Short-circuit current rating (SCCR) of industrial control panels
... equipment label that Machine 1’s control panel is rated for 42kA. However, Machine 2 is older equipment and its equipment label does not list an assembly SCCR for the control panel. Using the worst case available fault current level, Machine 1 is not compliant (42kA < 54kA). The facility decides to ...
... equipment label that Machine 1’s control panel is rated for 42kA. However, Machine 2 is older equipment and its equipment label does not list an assembly SCCR for the control panel. Using the worst case available fault current level, Machine 1 is not compliant (42kA < 54kA). The facility decides to ...
08 SFT2841 connected..
... This function gives the RMS value of the 50 or 60 Hz component of the phase-to-phase voltages. U21 voltage between phases 2 and 1 (U21=V1-V2) U32 voltage between phases 3 and 2 (U32=V2-V3) U13 voltage between phases 1 and 3 (U13=V3-V1) – by calculation when 3 phase-to-earth VTs are connected ...
... This function gives the RMS value of the 50 or 60 Hz component of the phase-to-phase voltages. U21 voltage between phases 2 and 1 (U21=V1-V2) U32 voltage between phases 3 and 2 (U32=V2-V3) U13 voltage between phases 1 and 3 (U13=V3-V1) – by calculation when 3 phase-to-earth VTs are connected ...
Light dimmer circuits
... Because light dimmers are directly connected to mains you must make sure that no part of the circuit can be touched when it is operating. This can be best dealt by building the dimmer circuit to small plastic box. Remeber to use potentiometer with plastic shaft and install it so that no potentiomete ...
... Because light dimmers are directly connected to mains you must make sure that no part of the circuit can be touched when it is operating. This can be best dealt by building the dimmer circuit to small plastic box. Remeber to use potentiometer with plastic shaft and install it so that no potentiomete ...
orta geri̇li̇m şalt tesi̇si̇
... withdrawable circuit-breakers having vacuum technology along with complete sealed type that includes numeric protection relays, modular construction, having construction made of sheet steel, suitable for working up to 17,5 kV nominal voltage, metal compartment, free-standing type, floor mounted, con ...
... withdrawable circuit-breakers having vacuum technology along with complete sealed type that includes numeric protection relays, modular construction, having construction made of sheet steel, suitable for working up to 17,5 kV nominal voltage, metal compartment, free-standing type, floor mounted, con ...
Transformer types
A variety of types of electrical transformer are made for different purposes. Despite their design differences, the various types employ the same basic principle as discovered in 1831 by Michael Faraday, and share several key functional parts.