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JPH06121475A |
PURPOSE: To automatically release the emergency stop condition of an emergency stop switch when a remote control box of a machine having a controller is separated from the controller. CONSTITUTION: The emergency stop switch 6 inside a re...
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JPH0631339U |
[Purpose] If an overcurrent flows during power supply, it is cut off, and when the cause of the overcurrent is eliminated, the power supply can be restarted. [Constitution] The L-level overcurrent detection signal OCD, which detects the ...
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JPH0622450A |
PURPOSE: To make a decision whether an AC adapter can be used or not without operating a device by measuring no-load output voltage of an AC adapter and an output voltage of the AC adapter when a test load is connected and then determini...
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JPH066933A |
PURPOSE: To provide a power-supply breaking device wherein a shot-circuit fault is prevented during the assembly operation or the maintenance operation of a power-supply system. CONSTITUTION: Limit switches 14c, 26c, 27c, 31c which have ...
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JPH0592943U |
[Purpose] The purpose is to provide a safe demand device for outlets without over-equipment and without current exceeding the rating flowing through the outlet. [Constitution] The relay of the relay drive circuit 14 normally has its cont...
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JPH05336667A |
PURPOSE: To provide a reverse charge preventive unit which can stop operation of a distributed power supply system positively upon opening of a substation circuit breaker even when power generation of the distributed power supply system ...
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JPH05328740A |
PURPOSE: To detect the ground fault of an inverter easily and at low cost, and to assure safety. CONSTITUTION: In an inverter detecting only DC intermediate currents and protecting output overcurrents, all arm elements (the switching ele...
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JPH05328721A |
PURPOSE: To prevent the spread of damage by the occurrence of accident and control malfunction, when the sound system of protective relay circuits detects the occurrence of abnormality in a state where one system of the protective relay ...
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JPH05316643A |
PURPOSE: To prevent a relevant circuit breaker from being made even when a making command is issued so as to prevent the occurrence of a short- circuiting fault when an earthing device is earthed to a trolley wire by setting making lock ...
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JPH05300065A |
PURPOSE: To prevent the discharge of a rocket or a satellite or the like and to simplify the procedure when a high power RF signal is switched in a pressure zone in which the rocket or satellite is easily discharged. CONSTITUTION: A volt...
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JPH0584145U |
[Purpose] The track side and device side protectors can be inserted and removed by a plug-in method, and erroneous insertion of each protector is prevented. [Constitution] The base 10 and the electrical component 16 are the basic compone...
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JPH0540680Y2 |
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JPH05252653A |
PURPOSE: To prevent the breakage of a semiconductor amplifying circuit and the like by a method wherein a fusible element is fused to stop a circuit when unbalance is generated in a compounding and distributing circuit for high frequency...
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JPH05252654A |
PURPOSE: To prevent the breakage of a circuit to be protected by a method wherein a power supply line for the circuit to be protected is cut automatically when the circuit is connected to an AC power supply having a high voltage higher t...
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JPH0537631Y2 |
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JPH05244722A |
PURPOSE: To protect a power supply against short circuit and to make possible to detect failure of load prior to turn ON of DC power supply by providing a load state detecting section, a switching circuit section, and a control section t...
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JPH05236647A |
PURPOSE: To completely prevent damage, breakage or deterioration of a load, a connector, etc., by eliminating outputting of an output voltage when a plug-in power source module is mismounted. CONSTITUTION: When plug-in power source modul...
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JPH05234473A |
PURPOSE: To enable the detection of voltage and phase upon connection of an open line to be performed on the ground and prevent false connection by providing a make inhibition mechanism and a system for detecting voltage and phase into a...
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JPH05219653A |
PURPOSE: To sustain operation of sound loads by disconnecting only an abnormal load from power supply section upon occurrence of abnormality therein. CONSTITUTION: Upon occurrence of abnormality in any one of electronic machines Z1, Z2.....
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JPH05219649A |
PURPOSE: To protect a load circuit against abnormal DC input voltage. CONSTITUTION: Upon turn ON of a power switch 1, a relay 2 in a control circuit 23 functions to turn control switches 24, 25 ON thus connecting a DC power supply connec...
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JPH05191918A |
PURPOSE: To improve reliability economically in relation to a control method for power failure disconnection with which to disconnect a voltage supply to an electronic circuit unit by detecting any failure of plural power source units mo...
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JPH05176451A |
PURPOSE: To protect an electronic appliance from being applied with a high voltage even if a high voltage supply cable is connected inadvertently with the low voltage input section of the electronic appliance by detecting the voltage lev...
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JPH0542216B2 |
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JPH05137253A |
PURPOSE: To make it possible to trip a control object upon detection of an overvoltage by a constitution wherein an electromagnetic coil is de-energized to disable closing of the control object when the control voltage exceeds a maximum ...
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JPH05122845A |
PURPOSE: To realize an electric shock preventer for preventing electric shock due to erroneous connection between an electric equipment and a three-line power supply containing an earth line. CONSTITUTION: Terminals 6, 7, other than an e...
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JPH05115121A |
PURPOSE: To facilitate detection of commercial power interruption on the side customer by a simple system, and to parallel off the customer side from the commercial power supply system surely and automatically. CONSTITUTION: The commerci...
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JPH0533693U |
[Purpose] Obtain an inverter braking device that enables reverse connection protection. [Constitution] In the inverter braking device 4, a switch is arranged in series with the brake transistor 5 and the brake resistor, and a reverse con...
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JPH0526402B2 |
A protection circuit for preventing an over-current condition if the semiconductor power controller in an electric train power control circuit is defective. The power controller is connected in series through first and second switches to...
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JPH0595674A |
PURPOSE: To provide a power supply equipment capable of surely stopping the output of a power supply circuit when an overcurrent occurs in a load current. CONSTITUTION: Timing for turning-on of the second transistor Q2 is determined by t...
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JPH0528003U |
[Purpose] In an ECU equipped with a diode that absorbs surges generated when the load is off, while controlling the on / off of the load including inductance, it is possible to prevent the power supply from wrapping around from the load ...
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JPH0591659A |
PURPOSE: To prohibit delivery of abnormal signal to external circuits upon removal of connector in a circuit for outputting signals in response to input signals being fed through a connector having a plurality of pins. CONSTITUTION: The ...
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JPH0525946U |
[Purpose] With respect to a power supply input circuit provided with two fuses, it is an object of the present invention to provide a means for providing a fuse having an optimum capacity in the power supply voltage switchable power supp...
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JPH0510513Y2 |
Electric control apparatus (20) for equipment (1) comprising a driving circuit (5) for generating a signal (S1) to drive the equipment as installed in a vehicle, the driving circuit including circuitry having a first specified working vo...
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JPH0518264U |
[Purpose] Provided is a rotary electric machine in which the operation of the circuit breaker is suppressed and the ability of continuous operation is improved when the rotary electric machine is operated under a high load without impair...
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JPH0549157A |
PURPOSE: To trip a magnet contact through Mctt operation circuit when parallel resonance has occurred by providing a main control circuit as overvoltage/ overcurrent protection means and a parallel resonance prevention circuit for detect...
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JPH0514231B2 |
PURPOSE:To enable the detection of the phase relationship with an inexpensive construction and free from the flow of a load current by picking up changes in a 3-phase AC power source using a optical coupling element to compare phase sequ...
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JPH0530653A |
PURPOSE: To avoid the operation of a battery relay when a power supply battery is reversely connected and protect respective loads from burning damages caused by an overcurrent applied to a main wiring, etc. CONSTITUTION: A diode 22 is p...
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JPH0530651A |
PURPOSE: To alleviate damage of power supply relay contact due to surge current for a capacitive load at the time of turn ON of power in a power supply circuit at the power supply section of a mobile radio telephone. CONSTITUTION: In a p...
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JPH0530652A |
PURPOSE: To protect power feeding apparatuses from breakdown caused by a reverse voltage even if only one feeding apparatus is in operation and the respective power feeding apparatuses are connected to each other with multiplex transmiss...
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JPH0526911A |
PURPOSE: To detect that the current is cut off, by a method wherein a current flows through a diode when one power source is cut off, three transistors connected to the diode in series turn ON and the current detected by a current detect...
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JPH0521182A |
PURPOSE: To prevent an electric shock by detecting the connecting condition only by the stable main position side whose potential is same with one side output end of a rectifier device, of output ends of the high-frequency converter devi...
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JPH0515058A |
PURPOSE: To enable simplification of a switching portion to be promoted and at the same time prevent damage of an equipment due to erroneous switching. CONSTITUTION: Separation between a transmission-side constant-current circuit 1 which...
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JPH053627A |
PURPOSE: To protect circuit elements from noise generated during live line replacement in a live line replacing device for substrate with a large current flowing. CONSTITUTION: A live line replacing device 1 of a substrate is equipped wi...
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JPH053626A |
PURPOSE: To protect circuits during reverse connection of batteries without installing large exclusive diodes for current bypass conventionally attached on outer portion in an electronic controller installed on a car. CONSTITUTION: At th...
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JPH0454464Y2 |
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JPH04355627A |
PURPOSE: To protect load from abnormality in the condition insulated from an AC power source without providing an insulating circuit, a creeping distance for insulation, or a space distance. CONSTITUTION: This circuit is provided with a ...
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JPH04322128A |
PURPOSE: To provide a protective system for submarine cable power supply system wherein the power supply voltage does not increase abnormally even when an earth test unit is removed. CONSTITUTION: A termination unit 3 comprises a unit 4 ...
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JPH04299024A |
PURPOSE: To provide a reverse voltage connection protective circuit which is less in voltage drop and can effectively utilize an external power source. CONSTITUTION: This reverse voltage connection protective circuit is used when a plug ...
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JPH0465612B2 |
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JPH0461576B2 |
A power supply system comprising an a.c. voltage source (ACS), a load (LL) and a detachable (DCC) cable connection (CC). In order to prevent a dangerously high a.c. voltage from occurring between cable conductors (CC1, CC2) when the cabl...
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