TTR 795 - Haefely Hipotronics
... many classical passive burdens can be replaced by a single electronic voltage burden. ...
... many classical passive burdens can be replaced by a single electronic voltage burden. ...
LTSR 15-NP
... This transducer is a built-in device, whose conducting parts must be inaccessible after installation. A protective housing or additional shield could be used. Main supply must be able to be disconnected. Page 2/3 ...
... This transducer is a built-in device, whose conducting parts must be inaccessible after installation. A protective housing or additional shield could be used. Main supply must be able to be disconnected. Page 2/3 ...
Transformers
... magnetic field, called “flux” between the two coils. The field is created just the same way as an electromagnet, when current flows in the primary coil ...
... magnetic field, called “flux” between the two coils. The field is created just the same way as an electromagnet, when current flows in the primary coil ...
Determining the Air Gap Length of an Axial Flux Wound Rotor
... lack of constant prime mover rotation, the output voltage generated by the generator varies. To make a constant voltage, the flux should be controlled by varying the field current flowing through the rotor winding. Therefore, the expected advantage of this study is to obtain a precise measurement of ...
... lack of constant prime mover rotation, the output voltage generated by the generator varies. To make a constant voltage, the flux should be controlled by varying the field current flowing through the rotor winding. Therefore, the expected advantage of this study is to obtain a precise measurement of ...
AC Circuits - faculty at Chemeketa
... Δvc = instantaneous potential difference across capacitor An AC potential difference is sinusoidal, so the potential difference across the power supply can be specified. Ohm’s law and the definition of capacitance can be used to specify the potential differences across the resistor and capacitor res ...
... Δvc = instantaneous potential difference across capacitor An AC potential difference is sinusoidal, so the potential difference across the power supply can be specified. Ohm’s law and the definition of capacitance can be used to specify the potential differences across the resistor and capacitor res ...
Capacitors Problem Set
... 13. Compact ultracapacitors with capacitance values up to several thousand farads are now commercially available. One application for ultracapacitors is in providing power for electrical circuits when other sources (such as a battery) are turned off. To get an idea of how much charge can be stored i ...
... 13. Compact ultracapacitors with capacitance values up to several thousand farads are now commercially available. One application for ultracapacitors is in providing power for electrical circuits when other sources (such as a battery) are turned off. To get an idea of how much charge can be stored i ...
VFD Fundamentals
... Voltage and Frequency Relationship - When the frequency applied to an induction motor is reduced, the applied voltage must also be reduced to limit the current drawn by the motor at reduced frequencies. (The inductive reactance of an AC magnetic circuit is directly proportional to the frequency acco ...
... Voltage and Frequency Relationship - When the frequency applied to an induction motor is reduced, the applied voltage must also be reduced to limit the current drawn by the motor at reduced frequencies. (The inductive reactance of an AC magnetic circuit is directly proportional to the frequency acco ...
1 - gtbit
... 36. A motor having slip energy recovery scheme can be braked by a. Regenerative braking b. Plugging c. DC dynamic braking d. All of above 37. The speed of an IM can be varied by variable frequency supply from a static power converter. A simultaneous voltage variation is also effected in order to a. ...
... 36. A motor having slip energy recovery scheme can be braked by a. Regenerative braking b. Plugging c. DC dynamic braking d. All of above 37. The speed of an IM can be varied by variable frequency supply from a static power converter. A simultaneous voltage variation is also effected in order to a. ...
Oscilloscope and High Voltage Probe Facilitage Motor
... inductance of the power buses connected to the cell output. Excessive inductance can cause “kickback” voltages to occur when an IGBT is rapidly switched off. Even though the effective DC supply voltage for the IGBTs in this cell is approximately 600 volts, kickback effects can produce transient sign ...
... inductance of the power buses connected to the cell output. Excessive inductance can cause “kickback” voltages to occur when an IGBT is rapidly switched off. Even though the effective DC supply voltage for the IGBTs in this cell is approximately 600 volts, kickback effects can produce transient sign ...
part anik
... because the power supply is more stable. In the discontinuous mode of operation the output current drops to zero before the power switch turns on and the current ramp starts up. In this case the secondary current ripple starts from a zero base on each cycle and the core only stores energy during the ...
... because the power supply is more stable. In the discontinuous mode of operation the output current drops to zero before the power switch turns on and the current ramp starts up. In this case the secondary current ripple starts from a zero base on each cycle and the core only stores energy during the ...
Electrostatic trapping of single conducting nanoparticles between
... been a major research area in the past decade.1 Now the focus is starting to shift from artificially fabricated structures that have a minimum size set by the limits of lithography techniques to ‘‘natural’’ nm-size objects such as clusters and molecules.2–9 A variety of ultrasmall and ultrafast elec ...
... been a major research area in the past decade.1 Now the focus is starting to shift from artificially fabricated structures that have a minimum size set by the limits of lithography techniques to ‘‘natural’’ nm-size objects such as clusters and molecules.2–9 A variety of ultrasmall and ultrafast elec ...
ECE 323L Basic Electronics Circuits Laboratory
... a) Measure source voltage on oscilloscope with probes between A and B. Measure load voltage with probes between C and D. Do not attempt to measure both signals on the oscilloscope at the same time, the oscilloscope channels share a common ground and trying to make simultaneous measurements will intr ...
... a) Measure source voltage on oscilloscope with probes between A and B. Measure load voltage with probes between C and D. Do not attempt to measure both signals on the oscilloscope at the same time, the oscilloscope channels share a common ground and trying to make simultaneous measurements will intr ...
Appendix A A Simple Approach to the Concept of Capacitance
... The X-rays you will use for your experiments are produced in an X-ray tube known as the hot-cathode type. This refers to the use of a heated tungsten filament as the electron source (the cathode). The anode is a heavy copper rod. An electric current through the tungsten filament heats the cathode to ...
... The X-rays you will use for your experiments are produced in an X-ray tube known as the hot-cathode type. This refers to the use of a heated tungsten filament as the electron source (the cathode). The anode is a heavy copper rod. An electric current through the tungsten filament heats the cathode to ...
ICM408 3-Phase Line Monitor
... 3-P HASE L INE M ONITOR The ICM408 is a low cost three-phase voltage monitor with fault indicator. ...
... 3-P HASE L INE M ONITOR The ICM408 is a low cost three-phase voltage monitor with fault indicator. ...
Document
... When using a PL259 , BNC plugs and sockets it is essential that the inner conductor and outer braid are connected correctly. Poor connections can lead to equipment mal functioning and can also lead to unwanted expense having to get equipment repaired. It is essential that the screening is continuou ...
... When using a PL259 , BNC plugs and sockets it is essential that the inner conductor and outer braid are connected correctly. Poor connections can lead to equipment mal functioning and can also lead to unwanted expense having to get equipment repaired. It is essential that the screening is continuou ...
June 2006 - Vicphysics
... will be centred on zero volts (1) and will be like a square wave with a peak to peak voltage of 16V and the same period as the input voltage. (1) Note: To be more precise the emitter voltage is 3.3V (4V – 0.7V) and the voltage across the collector – emitter is about 0.2V, so the lowest voltage at th ...
... will be centred on zero volts (1) and will be like a square wave with a peak to peak voltage of 16V and the same period as the input voltage. (1) Note: To be more precise the emitter voltage is 3.3V (4V – 0.7V) and the voltage across the collector – emitter is about 0.2V, so the lowest voltage at th ...
Chapter 26
... • Fuse links (fusible links) are smaller-diameter wire spliced into the larger circuit wiring – Ensures over-current protection – Normally in engine compartment near battery – Often installed in the positive battery lead that powers the ignition switch – Covered with a special insulation that bubble ...
... • Fuse links (fusible links) are smaller-diameter wire spliced into the larger circuit wiring – Ensures over-current protection – Normally in engine compartment near battery – Often installed in the positive battery lead that powers the ignition switch – Covered with a special insulation that bubble ...
The DECIMETER slipslick
... among 2C40 tubes the range may be slightly different, but will never be more than 25 Mc. off. All oscillators are guaranteed to cover the amateur band from 2300 to 2450 Mc. ...
... among 2C40 tubes the range may be slightly different, but will never be more than 25 Mc. off. All oscillators are guaranteed to cover the amateur band from 2300 to 2450 Mc. ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""