Ham Radio Glossary Alternating current (AC) -
... Ground-wave propagation -- The method by which radio waves travel along the Earth's surface. Half-wave dipole -- A basic antenna used by radio amateurs. It consists of a length of wire or tubing, opened and fed at the center. The entire antenna is ½ wavelength long at the desired operating frequency ...
... Ground-wave propagation -- The method by which radio waves travel along the Earth's surface. Half-wave dipole -- A basic antenna used by radio amateurs. It consists of a length of wire or tubing, opened and fed at the center. The entire antenna is ½ wavelength long at the desired operating frequency ...
Sensor Cable accessories.07.06
... cable is not practical or possible. In such cases, the use of the Proline “TH” sensor cable with support wire (supplied on separate reel for on site installation around the sensor cable at a recommended 3 turns per metre) is recommended. The support wire is a flexible nylon covered stainless steel c ...
... cable is not practical or possible. In such cases, the use of the Proline “TH” sensor cable with support wire (supplied on separate reel for on site installation around the sensor cable at a recommended 3 turns per metre) is recommended. The support wire is a flexible nylon covered stainless steel c ...
LESAT
... laws to obtain linear equations that can be solved in matrix form. • Predict induced currents and voltage drops on wiring and structural elements. ...
... laws to obtain linear equations that can be solved in matrix form. • Predict induced currents and voltage drops on wiring and structural elements. ...
Designing a Qi-compliant receiver coil for wireless power systems
... vary in different system scenarios. Due to the interoperability nature of the Qi standard, the Rx coil can be placed on many different types of Tx’s that may influence the Rx-coil inductance—and hence the electrical response. Per Section 4.2.2.1 of the WPC specification,1 the Rx-coil inductance, L′S ...
... vary in different system scenarios. Due to the interoperability nature of the Qi standard, the Rx coil can be placed on many different types of Tx’s that may influence the Rx-coil inductance—and hence the electrical response. Per Section 4.2.2.1 of the WPC specification,1 the Rx-coil inductance, L′S ...
Dual-mode Beam Current Monitor
... The circuit is switched with reed relay to fast CT mode. The reed relay is selected because of its stability of the contact resistance. In order to eliminate the abnormal response due to a parasitic resonance of the pick-up coil at a several-MHz, a low-pass filter with the cut-off frequency of 1 MHz ...
... The circuit is switched with reed relay to fast CT mode. The reed relay is selected because of its stability of the contact resistance. In order to eliminate the abnormal response due to a parasitic resonance of the pick-up coil at a several-MHz, a low-pass filter with the cut-off frequency of 1 MHz ...
TechTopics No. 90 - Temperature ratings for external cables
... provided the ampacity of such conductors does not exceed the 75 °C (167 °F) ampacity of the conductor size used, or up to their ampacity if the equipment is listed and identified for use with such conductors ...
... provided the ampacity of such conductors does not exceed the 75 °C (167 °F) ampacity of the conductor size used, or up to their ampacity if the equipment is listed and identified for use with such conductors ...
Chapter 18 Powerpoint
... Since the inductor cannot store its magnetic field when current is not being supplied to it, where does the magnetic field go when the switch is opened? ...
... Since the inductor cannot store its magnetic field when current is not being supplied to it, where does the magnetic field go when the switch is opened? ...
view manual - Universal Radio
... When using loops equal to or greater than 10m circumference, the amplifier gain should be changed from „High Gain“ (default) to „Low Gain“ with the jumper. This is necessary to avoid overloading the antenna. To do this, you have to detach the cover of the antenna case (4 stainless steel screws). Whe ...
... When using loops equal to or greater than 10m circumference, the amplifier gain should be changed from „High Gain“ (default) to „Low Gain“ with the jumper. This is necessary to avoid overloading the antenna. To do this, you have to detach the cover of the antenna case (4 stainless steel screws). Whe ...
Instruction Sheet for S500-A5
... Notes: 1. An external contactor must be used for control of 24 V pull in coils. 2. Operating a solenoid pull in coil at this cycle rate may cause overheating. Consult Trombetta for high cycle rate applications. 3. Insertion loss is the voltage reduction that occurs due to the module. **** Consult Tr ...
... Notes: 1. An external contactor must be used for control of 24 V pull in coils. 2. Operating a solenoid pull in coil at this cycle rate may cause overheating. Consult Trombetta for high cycle rate applications. 3. Insertion loss is the voltage reduction that occurs due to the module. **** Consult Tr ...
inductance of coaxial cable
... ro1 = 7 mm we change ri1 from zero to 4 mm, L changes from the value 1.325×10−7 H/m (see the Table) to 8.643×10−8 H/m while the values LH and LS remain unchanged. Both in the proposed method and when deriving formulae for the calculation of LH and LS , the conductors were assumed to be solid. A numb ...
... ro1 = 7 mm we change ri1 from zero to 4 mm, L changes from the value 1.325×10−7 H/m (see the Table) to 8.643×10−8 H/m while the values LH and LS remain unchanged. Both in the proposed method and when deriving formulae for the calculation of LH and LS , the conductors were assumed to be solid. A numb ...
VII. Eddy-Current Heating by Pulse Magnet
... these flux changes one can employ an iron shield to divert pulse magnet flux that otherwise would link the PEP-4 coil. However, to limit the average flux density in the iron to 1.6 T, so as to maintain high permeability, one needs a shield 0.4 m thick, which implies a mass of a hundred tons to make ...
... these flux changes one can employ an iron shield to divert pulse magnet flux that otherwise would link the PEP-4 coil. However, to limit the average flux density in the iron to 1.6 T, so as to maintain high permeability, one needs a shield 0.4 m thick, which implies a mass of a hundred tons to make ...
UNDERGROUND CABLES
... For long distance power transmission, the charging current is very high results in over voltages problems. Its not recommended to transfer power for a long distance using underground cables. 5- Current carrying capacity is more in case of O.H.T Lines conductors (better cooling conditions) for the sa ...
... For long distance power transmission, the charging current is very high results in over voltages problems. Its not recommended to transfer power for a long distance using underground cables. 5- Current carrying capacity is more in case of O.H.T Lines conductors (better cooling conditions) for the sa ...
Electrodynamics: Alternating current, inductance
... Inductance (measured in henries, symbol H) is a measure of the generated emf for a unit change in current. For example, an inductor with an inductance of 1 H produces an emf of 1 V when the current through the inductor changes at the rate of 1 A·s−1 . An inductor is a passive electrical device used ...
... Inductance (measured in henries, symbol H) is a measure of the generated emf for a unit change in current. For example, an inductor with an inductance of 1 H produces an emf of 1 V when the current through the inductor changes at the rate of 1 A·s−1 . An inductor is a passive electrical device used ...
MODIS System Accessory Brochure PDF - Snap-on
... The CAN1B adapter provides CAN protocol support on all MT2500 and MTG2500 scanners. This in-line adapter connects between the existing data cable and OBD-II or DL-16 connector. Proprietary CAN protocols differ by manufacturer and utilize different wiring to the OBD-II connector on the vehicle. The C ...
... The CAN1B adapter provides CAN protocol support on all MT2500 and MTG2500 scanners. This in-line adapter connects between the existing data cable and OBD-II or DL-16 connector. Proprietary CAN protocols differ by manufacturer and utilize different wiring to the OBD-II connector on the vehicle. The C ...
Chapter 18 Powerpoint
... the inductor located physically next to it, then extra inductance will be introduced, (or some inductance will be cancelled out.) ...
... the inductor located physically next to it, then extra inductance will be introduced, (or some inductance will be cancelled out.) ...
Ch. 32 - Inductance and Magnetic Energy
... • First an observation: Since E cannot be infinite neither can dI/dt. Therefore, current cannot change instantaneously. • We will see that inductance in a circuit affects current in somewhat the same way that capacitance in a circuit affects voltage. • A ‘thing’ (a component) with inductance in a ci ...
... • First an observation: Since E cannot be infinite neither can dI/dt. Therefore, current cannot change instantaneously. • We will see that inductance in a circuit affects current in somewhat the same way that capacitance in a circuit affects voltage. • A ‘thing’ (a component) with inductance in a ci ...
06_AC Generators
... EMF will be applied to the external circuit. To make a continuous connection to the external circuit, the ends of the wire are fastened to Slip Rings mounted on the axis of the rotating loop. Sliding connectors called brushes complete the circuit. The slip rings rotate with the loop while the no ...
... EMF will be applied to the external circuit. To make a continuous connection to the external circuit, the ends of the wire are fastened to Slip Rings mounted on the axis of the rotating loop. Sliding connectors called brushes complete the circuit. The slip rings rotate with the loop while the no ...
Unit 17* Inductance in AC Circuits
... the applied voltage. 3. Inductive reactance is a countervoltage that limits the flow of current, as does resistance. ...
... the applied voltage. 3. Inductive reactance is a countervoltage that limits the flow of current, as does resistance. ...
Unit 17 Inductance in AC Circuits
... the applied voltage. 3. Inductive reactance is a countervoltage that limits the flow of current, as does resistance. ...
... the applied voltage. 3. Inductive reactance is a countervoltage that limits the flow of current, as does resistance. ...
Loading coil
A loading coil or load coil is an inductor that is inserted into an electronic circuit to increase its inductance. A loading coil is not a transformer to provide coupling to another other circuit. The term originated in the 19th century for inductors used to prevent signal distortion in long-distance telegraph transmission cables. The term is also used for inductors in radio antennas, or between the antenna and its feedline, to make an electrically short antenna resonant at its operating frequency.Loading coils are historically also known as Pupin coils after Mihajlo Pupin, especially when used for the Heaviside condition and the process of inserting them is sometimes called pupinization.The concept of loading coils was discovered by Oliver Heaviside in studying the problem of slow signalling speed of the first transatlantic telegraph cable in the 1860s. He concluded additional inductance was required to prevent amplitude and time delay distortion of the transmitted signal. The mathematical condition for distortion-free transmission is known as the Heaviside condition. Previous telegraph lines were overland or shorter and hence had less delay, and the need for extra inductance was not as great. Submarine communications cables are particularly subject to the problem, but early 20th century installations using balanced pairs were often continuously loaded with iron wire or tape rather than discretely with loading coils, which avoided the sealing problem.