摘要:
A mixer for mixing pulse voltage energy and electromagnetic wave energy in the same transmission line is provided with a first input terminal to which an electromagnetic wave is inputted, a second input terminal to which pulse voltage is inputted, a mixing output terminal from which the pulse voltage and the electromagnetic wave are outputted, a bar-shaped first conductive member of which one end is electrically connected to the second input terminal and the other end is electrically connected to an inner conductor of the mixing output terminal, a cylindrical second conductive member which surrounds the first conductive member with a gap therebetween and is disposed coaxially with the first conductive member and electrically connected to an inner conductor of the first input terminal, and a cylindrical third conductive member which houses the first conductive member and the second conductive member with a gap between the second conductive member and the third conductive member and is disposed coaxially with the first conductive member and the second conductive member and electrically connected to an outer conductor of the first input terminal and an outer conductor of the mixing output terminal.
摘要:
For detecting commutation timing of an inverter when operating a DC brushless motor under a starting thereof or a light load condition, with certainty, a micro-computer generates driving signals so as to drive switching elements of the inverter by PWM signals of those driving signals, in a predetermined order by every turn-on interval, thereby supplying driving current to the DC brushless motor, wherein a timing for exchange between the turn-on intervals (i.e., the commutation timing) is detected by detection of level of magnetic pole position detecting signals upon a basis of the PWM signals. Here, the minimum ON time of the PWM signals is set at a time being detectable in the level of the magnetic pole position detecting signals, however the frequency of the PWM signals is lowered when the DC brushless motor is operated in starting or under a light load condition, so as to make duty ratio of the PWM signals fit to the operation in the starting or under the light load condition, thereby enabling to ensure the minimum ON time of the PWM signals.
摘要:
There is provided a magnetron comprising a cold cathode having an electron emitting member which is formed linearly or as a plane on a substrate to emit electrons a subdivided anode disposed oppositely in parallel with the electron emitting member, the subdivided anode having cavity resonators formed therein at the side of the cold cathode, and a magnet which producing a magnetic field lying at right angles to an electric field applied between the cold cathode and the subdivided anode. There is also provided a microwave oven for dielectric-heating a substance to be heated by using the magnetron as a microwave supply source.
摘要:
A cooking utensil comprises a reading member responsive to a recording medium containing a cooking program which is carried out in the cooking utensil, and a control circuit responsive to the cooking program read by the reading member, thereby conducting the cooking program through properly energizing an energization circuit for the cooking utensil. The cooking program may be desirably recorded on the recording medium through input keys of the cooking utensil. The recorded cooking program can be checked whether or not it is recorded with accuracy. Cooking information of the cooking program is indicated by an indicator for representing conditions of the cooking utensil. The cooking program may be modified according to total weight of a foodstuff to be cooked.
摘要:
An engine control device 13 that cannot output a control signal to an electromagnetic wave emission device 30 is used to emit electromagnetic wave at an appropriate timing from the device 30 to a combustion chamber 10. A signal processing device 40 is connected to the engine control device 13 that outputs an ignition signal for instructing an ignition device 12 of the engine 20 to ignite fuel air mixture in the combustion chamber 10 of the engine 20. The signal processing device 40, upon receiving the ignition signal, outputs to the electromagnetic wave emission device 30 an electromagnetic wave drive signal that determines based on the ignition signal an emission period, which is a period for the electromagnetic wave emission device 30 to emit an electromagnetic wave to the combustion chamber 10, so that an ignition operation is performed during the emission period of the electromagnetic wave.
摘要:
There is provided an ignition or plasma generation apparatus that eliminates the need for resonance means in a combustion chamber and simplifies the electrode structure within the combustion chamber in an instance where energy from each of a spark discharge and microwaves is used to ignite an air-fuel mixture gas in an internal combustion engine. The ignition or plasma generation apparatus includes a mixing circuit for mixing a high-voltage pulse from a high-voltage pulse generator and microwave energy from a microwave generator; and an ignition plug into which an output from the mixing circuit is supplied, the plug used for introducing the output into a combustion chamber of an internal combustion engine. The output supplied from the mixing circuit to the ignition plug is supplied in a manner in which the microwave energy and the high-voltage pulse are superimposed on each other on a same transmission line.
摘要:
An improved dialyzing hollow fiber of cuprammonium regenerated cellulose, showing a substantially similar network structure of fine gap passage routes having a max. gap size of 200 A when .[.seen.]. .Iadd.observed .Iaddend.at .[.its.]. any cross-section and .[.logitudinal.]. .Iadd.longitudinal .Iaddend.section, having skinless structure at its inside and outside surface of the hollow fiber and representing a superior water permeability.
摘要:
An engine control device 13 that cannot output a control signal to an electromagnetic wave emission device 30 is used to emit electromagnetic wave at an appropriate timing from the device 30 to a combustion chamber 10. A signal processing device 40 is connected to the engine control device 13 that outputs an ignition signal for instructing an ignition device 12 of the engine 20 to ignite fuel air mixture in the combustion chamber 10 of the engine 20. The signal processing device 40, upon receiving the ignition signal, outputs to the electromagnetic wave emission device 30 an electromagnetic wave drive signal that determines based on the ignition signal an emission period, which is a period for the electromagnetic wave emission device 30 to emit an electromagnetic wave to the combustion chamber 10, so that an ignition operation is performed during the emission period of the electromagnetic wave.
摘要:
To suppress the reflection of an electromagnetic wave from a load in a plasma generation device 30 that generates electromagnetic wave plasma by emitting the electromagnetic wave to a combustion chamber 10 of an engine 20. The plasma generation device 30 includes an electromagnetic wave oscillator 33 that oscillates the electromagnetic wave, an antenna 15a for emitting the electromagnetic wave oscillated by the electromagnetic wave oscillator to the combustion chamber 10 of the engine 20, and a stub adjustment unit 52, 53. The stub 51 is provided on a transmission line 60 for electromagnetic wave from the electromagnetic wave oscillator 33 to the antenna 15a. While the engine 20 is operating, the stub adjustment unit 52, 53 adjusts a short circuit location on the stub 51 based on the intensity of a reflected wave of the electromagnetic wave reflected from the antenna 15a.
摘要:
A high frequency switch device includes a branch transmission line corresponding to each output terminal provided with a switching part. In the branch transmission line, the switching part includes a transmission side diode provided in such a manner that a cathode thereof is arranged on a side of an input terminal 41 and an anode thereof is arranged on a side of the output terminal, and a ground side diode provided in such a manner that a cathode thereof is grounded and an anode thereof is electrically connected between the output terminal and the transmission side diode in the branch transmission line. The branch transmission line includes a first capacitor and a second capacitor on the side of the output terminal from the transmission side diode in such a manner that the anode of the ground side diode is connected between the first capacitor and the second capacitor.