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JPH04275020A |
PURPOSE: To automatically output a required DC power without switching operation corresponding to the change of an inputted DC power by a method wherein, when a DC power having a voltage equal to a supplied voltage and having a polarity ...
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JPH04111242U |
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JPH04111243U |
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JPH04265622A |
PURPOSE: To allow normal voltage to be applied to the load even if a positive electrode and a negative electrode are reversely connected by connecting a diode between a terminal for power supply and an internal circuit, on an electronic ...
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JPH04261332A |
PURPOSE: To prevent lighting of an LED for an operational panel with small number of components by preventing a current from a host apparatus by means of a diode in an integrated circuit. CONSTITUTION: If a power source of a printer is t...
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JPH04257674A |
PURPOSE: To prevent a voltage drop in a power supply system caused by a concurrent energization at the time of recovery from service interruption in the case where many air conditioners are connected to the same power supply system. CONS...
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JPH04505243A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPH04250714A |
PURPOSE: To interrupt the conduction of a power transistor at the short circuit of a load by providing parallel unidirectional two conductive paths between a first terminal of the secondary coil of a transformer and the gate of an auxili...
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JPH04244733A |
PURPOSE: To prevent a short circuit due to misconnection of an on-vehicle battery to a battery connecting device. CONSTITUTION: A clip is provided in both ends of a circuit where a pilot lamp and a diode are connected in series, an equal...
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JPH0493317U |
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JPH04223081A |
PURPOSE: To prevent the generation of dangerous stutations by performing the switching and control in responce to a specific voltage difference between the plugs in a port electric power center. CONSTITUTION: Three-pole plugs 16, 18 are ...
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JPH04183224A |
PURPOSE: To detect instantaneous interruption of primary power supply regardless of open circuit state or short circuit state by providing a three-phase transformer for monitoring input power, a rectifying circuit for inverting AC power ...
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JPH04183225A |
PURPOSE: To transmit emergency stop signals simultaneously to all electric machines, even if there are some nonconducting electric machines in a group of electric machines, by turning any one emergency stop switch of each electric machin...
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JPH04165923A |
PURPOSE: To enable a ground earth side to be orientated in a certain direction for supplying by identifying a direction of the ground side earth polarity of a commercial AC power supply and then changing a polarity of the commercial AC p...
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JPH04165920A |
PURPOSE: To prevent an AC 100V input power supply from being damaged by detecting whether input voltage is AC 100V or AC 200V and then switching the input relay. CONSTITUTION: For example, when an NPN transistor Q1 is turned on, voltage ...
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JPH04165921A |
PURPOSE: To prevent an AC 100V input power supply from being damaged even if an AC 200V is connected to an AC 100V input device by mistake by detecting whether an input voltage is AC 100V or AC 200V and then switching an input relay. CON...
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JPH04156227A |
PURPOSE: To prevent the burning of a connector contact caused by a rush current by making a voltage generation circuit to generate a start signal on the basis of an electric current supplied from a battery through a ground line so as to ...
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JPH04156226A |
PURPOSE: To improve the reliability of an inverse connection preventing switching circuit by realizing the circuit by controlling the drain electrodes of a P-and N-type MOS transistors with a voltage obtained by dividing a voltage extrac...
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JPH0461439U |
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JPH04145832A |
PURPOSE: To protect an AC 100V input power supply from being destroyed without applying AC 200V to the AC 100V input power supply even if the AC 200V is connected by mistake to the AC 100V input apparatus by detecting whether the input v...
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JPH04125026A |
PURPOSE: To blow out a fuse with the overcurrent and break the current application to an electric circuit by detecting the current flowing to the load with a current detecting means, in the case where a current flows to the load by the f...
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JPH04101628A |
PURPOSE: To eliminate connection of AC 200 V to an AC 100 V input power source even if AC 200 V is erroneously connected to an AC 100 V input unit by forming a structure for detecting whether an input voltage is AC 100 V or AC 200 V to o...
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JPH04101625A |
PURPOSE: To prevent damage of an AC 100 V input power source even if AC 200 V is erroneously connected to an AC 100 V input unit by detecting whether an input voltage is AC 100 V or AC 200 V, and opening or closing a relay of the input. ...
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JPH0439037U |
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JPH0418354B2 |
An electronic apparatus adapted to be used with a detachable member, such as a memory pack. The apparatus includes a pair of terminals arranged in the electronic apparatus for detecting an incorrect connection of the electronic apparatus...
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JPH0434828U |
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JPH0421137U |
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JPH0421136U |
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JPH041571B2 |
A static protective relay at least includes a plurality of current transformers inserted in poly-phase AC power lines, a half-wave rectifying circuit for rectifying the output voltages from said current transformers, wave-shaping circuit...
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JPH03244983A |
PURPOSE: To enable prohibition of running of a compressor when a three-phase AC source is in a opposite phase by a method wherein the interline voltage, different from that for synchronizing a serial signal, of the interline voltages of ...
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JPH0348815Y2 |
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JPH0397335U |
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JPH0357692B2 |
Electrical safety device for controlling a printing machine having a control transformer with a plurality of primary and secondary taps for varying voltage levels including respective control lines connected to the secondary taps, a volt...
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JPH0354824B2 |
Apparatus (10) for monitors and protects a plurality of contactor coils (14A-E) and coil drivers (16A-E) from damage owing to short circuits, and prevents the concurrent energization of more than a preselected number of the coils (14A-E)...
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JPH03503572A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPH0377240U |
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JPH0345854B2 |
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JPH0329994Y2 |
An apparatus for controlling the starting of a three phase load in its normal phase sequence. The apparatus is connected to the load in a predefined manner and has input terminals for receiving three phase electric energy through externa...
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JPH0341006B2 |
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JPH0326773Y2 |
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JPH0323808Y2 |
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JPH0323806Y2 |
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JPH0323807Y2 |
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JPH03112321A |
PURPOSE: To reduce a power loss upon normal operation by a method wherein a reverse flow preventing circuit, having a reverse polarity with respect to a DC power source, is interposed in the current supplying line of a driving coil for a...
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JPH0345041U |
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JPH0398425A |
PURPOSE: To prevent the generation of a nonconformity phenomenon due to reverse connection by detecting the agreement of the connection of the ground side of a power supply, one line of which is grounded, and the ground side of an electr...
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JPH0328894B2 |
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JPH0382334A |
PURPOSE: To prevent the operational error of a human and form an easy-to-use system by supplying an apparatus with a power signal mixed with a discrimination signal indicative of the type of the power supply on a power supply side, discr...
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JPH0375805A |
PURPOSE:To share AC electric parts even if the voltage of commercial power source is different by comparing an AC input voltage with a reference voltage, discriminating which kind of voltage in two voltage groups of commercial power sour...
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JPH0374138A |
PURPOSE: To cut off the power source to all units when any one unit is pulled out under live condition by distributing the power source function to plural units, and connecting the contacts of all units in series ring shape. CONSTITUTION...
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