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JPS542374B2 |
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JPS5412730U |
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JPS549750A |
An earth proving device which includes a solid state relay employing a light emitting diode and photoconductor pair operating on low current/low voltage. Operation of the solid state relay is followed by operation of electromagnetically-...
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JPS54633U |
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JPS54632U |
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JPS5352607Y2 |
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JPS5349464Y2 |
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JPS5349463Y2 |
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JPS5344014B2 |
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JPS53133745A |
ROTOR OVERTEMPERATURE PROTECTION FOR ELECTRIC MOTORS A system is provided for preventing overtemperatrue of the rotor bars of large squirrel-cage induction motors. A transmitter is mounted on the rotor and supplied with power from the ro...
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JPS53114029U |
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JPS5331254B2 |
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JPS5331930Y2 |
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JPS5395869U |
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JPS5329229Y2 |
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JPS5326188Y2 |
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JPS5367842A |
PURPOSE: The circuit which operates the return system relay only when the DC power source is connected in reverse polarity, and reverses the polarity of the DC power source to be connected to instruments, and is so constituted that, even...
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JPS5370656U |
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JPS5365535U |
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JPS5365536U |
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JPS5314811B2 |
An apparatus for ensuring that exposed, electrically conductive elements of a vehicle, which elements receive dangerous levels of electrical power and may present a hazard to bystanders, are covered by insulative shields when power is co...
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JPS5352958A |
A device for protecting a battery driven electrical appliance against reversal of battery polarity comprises switching means, for connection into the supply circuit of the appliance to be protected, and a series combination of an electri...
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JPS5320437U |
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JPS5316842A |
PURPOSE: To interrupt power from load when it is reverse polarity and enable re-insertion of plug, by installing polarity detection earth on load and confirming coincidence of polarity between the cathod of said semiconductor switch and ...
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JPS5313150A |
PURPOSE: To achieve reliable grounding for machinery with far lower grounding resistance when compared with grounding work, without requiring large scale grounding work.
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JPS531204U |
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JPS52169734U |
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JPS52166739U |
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JPS52166740U |
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JPS52142251A |
PURPOSE: To prevent a trouble such as a failure etc. as one constant directional current to flow in a load all the times and to simplify handling, by providing DC source connecting terminals at each connection part of No. 1 and No. 2 rec...
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JPS5249405Y2 |
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JPS52142626U |
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JPS52125829A |
This invention relates to a particularly safe electrical control device for a gas or oil-fired heating appliance comprising a plurality of sub-circuits each carrying out part of a start-up sequence for the appliance, and arranged so that...
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JPS52128931U |
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JPS52114670U |
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JPS52114246U |
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JPS52113336U |
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JPS52109528U |
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JPS52100934U |
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JPS5284437A |
PURPOSE: To prevent a reverse transmission by detecting a phase opposition utilizing a phase opposing at a power receiving point when a power transmission is halted.
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JPS5268974A |
A switch including an input terminal which is electrically connected in use to one pole of an electric storage battery, an output terminal and a movable contact movable between an inoperative position wherein the movable contact is isola...
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JPS5276922U |
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JPS5268939U |
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JPS5221866Y1 |
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JPS5216222B1 |
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JPS5260646U |
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JPS5212498B1 |
A vaporizer-humidifier having a small insulated vaporization chamber within a larger storage chamber, heating means within the vaporization chamber and a fan above the chamber for drawing air through and vapor from the vaporization chamb...
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JPS5241847A |
A ground monitor and circuit breaker actuating apparatus for monitoring the continuity of the ground and pilot conductors in a power distribution system and for deenergizing the power supply system when a true fault in the ground or pilo...
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JPS5231355A |
PURPOSE:Connecting with an inter-lock terminal in series, to protect a power source when a printed base plate is slipped off.
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JPS5233026U |
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