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Patent Searching and Data


Matches 651 - 700 out of 1,753

Document Document Title
JP3324056B2
To make it possible to detect the generation of a DC short-circuit phenomenon across both ends of one smoothing capacitor on the basis of a computed value by a method wherein voltages across both ends of respective smoothing capacitors a...  
JP3325927B2  
JP2002528938A
(57) Summary book invention is an incorrect polarity protection circuit for the electric power output stage which has at least one high side semiconductor switch, The above-mentioned high side semiconductor switch needs bigger control vo...  
JP2002247755A
To provide higher safety than that of a conventional art by preventing the occurrence of a short circuit between positive and negative electrodes of a power supply, even when the respective terminal electrodes on the power supply side an...  
JP2002528022A
(57) It has a switch (80) for which the battery protection circuit (10) for a summary external battery pack (14) controls connection of a battery output to load, and a detector which detects the resistance in a load output terminal. The ...  
JP3319302B2
To prevent an electrolytic capacitor, which stabilizes an electric potential, from being deteriorated or broken due to application of reverse bias by connecting a protective circuit which short-circuits both positive and negative termina...  
JP2002525018A
(57) Summary book invention is a circuit which protects the incorrect connection to the controllable electronic electric power output stage through a control circuit, It is related with the thing of the form that the through connection w...  
JP2002218645A
To provide a protective circuit for a power source circuit, through which devices can be protected, and a removable disk device employing the protective circuit for the power source circuit, concerning power source protection circuits an...  
JP2002203442A
To provide electronic equipment not conducting control operation to a signal from an operation button if the operation button kept in a pressed state is present when electric power is supplied.This electronic equipment judges whether vol...  
JP3302237B2
To secure the safety of the electrical equipment system of an agriculture working machine, making the consumption of its battery and the malfunction of its electrical equipment system, etc., removable completely, by previously preventing...  
JP3301472B2
To prevent the occurrence of a rush current when power supply is turned on with a simple circuit configuration. An FET is connected between a power source circuit 1 and a circuit 9 to be supplied with electric power having a smoothing ca...  
JP2002186175A
To provide a parallel operation power supply, which assures a highly safe operation by automatically and physically separating a fault of a power supply module when it is generated, because such a fault in the power supply module has the...  
JP2002516554A
(57) A summary and subject Offer the protection circuit which it is for an external battery pack, especially a cellular-phone battery pack new, and was improved. Solution means A set of the switch which controls connection of the battery...  
JP2002159136A
To avoid a failure of a circuit even if a common ground line is open- circuited and a high voltage is applied to the common ground line by a short circuit, etc.A load circuit 21 (including various types of actuators and their drive circu...  
JP2002136154A
To prevent a capacitor and a bus panel from being connected with each other with the polarity thereof inverted, when the capacitor is installed on the bus panel.The capacitor 33 includes a positive-pole terminal 41 and a negative-pole te...  
JP2002125314A
To prevent misoperations of electronics and giving damages to a circuit element, caused by improper connection of a connector used in the electronics.A connector, having groups of power feed paths corresponding to each of electronic boar...  
JP2002512498A
(57) In the polar error protection circuit of summary book invention, the semiconductor switch (11) is connected in parallel with a polar error protection diode (10). Switch-off is carried out at the time of a polar error, and switch-on ...  
JP3276996B2
PURPOSE: To obtain a malfunction preventing circuit adaptable to an electronic circuit configured as an integrated circuit which requires a plurality of grounding points and obtain a protection circuit suitable to an electronic circuit w...  
JP2002118958A
To provide a protector against reverse connection of a power supply preventing a relay contact point from being damaged, even if a load is a capacitive load.This protector against reverse connection of a power supply protecting the load ...  
JP2002112575A
To protect an inverter and a motor from failures in wirings between the inverter and the motor and of a commutation signal.A connection failure detecting means 9 compares a speed/ rotational direction command 8 with an actual speed/rotat...  
JP2002112448A
To allow utilizing an inverter for a single-phase two-wire 200 V output widely used in a market to link a photovoltaic power generating system to a single-phase 100 V system in a solar power generation system.The inverter 8 is not isolat...  
JP3272350B2  
JP2002098726A
To provide an earthing detection device capable of drawing user's attention, preventing an electric shock accident or the like, and improving safety, by monitoring the connection state between the armoring part of an object instrument an...  
JP2002095171A
To provide a method and apparatus for detecting polarity inversion of the onboard power supply voltage.An electronic unit (1) has an internal electric supply unit (3). This internal electric supply unit can be used independently of the p...  
JP2002095159A
To provide a protective circuit for protecting electronic equipment from a state in which the poles of a battery are reverse connected.Between the ground terminal TG of the electronic equipment 3 to which the negative pole of the battery...  
JP2002089419A
To provide a start control device for an internal combustion engine starter having functionality such as smooth advance engagement using an electronic starter control circuit and avoiding the use of an expensive smart power MOSFET to a h...  
JP3084420U
[A subject] Structure of battery urgent starting equipment of a car which can be used safely and conveniently is provided. [Means for Solution] Polar right or wrong of automobile battery 2 are probed by plus and minus each voltage detect...  
JP2002064933A
To provide a protective circuit for an electronic equipment which prevents a bad influence from being exerted on the inside of a body by a reverse current which flows when reverse connection is made, with simple construction without bein...  
JP3259611B2
To simplify a connecting means and prevent a short-circuiting fault when connecting a DC power unit to a load equipment. This system supplies the DC output of a DC power unit 1 to a load equipment consisting of a storage battery 8 and a ...  
JP2002055136A
To perform an opposite phase detection by adding a simple electronic circuit to an inexpensive apparatus, and enhance the functions of opposite phase detection, protecting operation and others at a cost lower than in the adaptation of an...  
JP2002051457A
To provide a protective device of a polar capacitor, which can suppress properly a surge generated in a load operation state and protect surely the polar capacitor, when a DC power supply is connected with reverse polarity.A mechanical r...  
JP2002034167A
To increase efficiency and reliability of a power circuit.A bridge construction using two sets of relay contacts for supplying a DC power voltage of a specified polarity to a load is formed in the power circuit. In a transition duration ...  
JP3250169B2
PURPOSE: To provide a switch which has a simple structure and a high dielectric strength by driving the switch so that the switch may be conducted when a second switching element, namely, a bipolar transistor is operated in the opposite ...  
JP3251803B2
PURPOSE: To prevent the deterioration of a circuit by preventing the repetition of turning on/off of switches on a power supply under an overcurrent state. CONSTITUTION: This is an overcurrent protection circuit which can interrupt an ou...  
JP2002027182A
To provide an electronic device that can detect possibility of presence of an abnormality in a connection state of a connection cable to a connection means.A signal line used for serial communication is placed in the vicinity of both end...  
JP2002010485A
To solve the problem that conventionally in a power supply, having an auxiliary power supply to supply power to the load and a connection error preventing device, error preventing device has to be replaced each time to avoid connection e...  
JP2001349853A
To provide a portable X-ray fluorescence analyzer which is driven by a DC power source, for which the power source is readily supplied.A power source input part of this portable X-ray fluorescence analyzer, driven by the DC power source,...  
JP2001352670A
To provide a connection apparatus which can be manufactured at low cost and by which a loss is not generated in a power supply, so that the apparatus itself or a connected apparatus will not break down, even if power supply is supplied a...  
JP2001344024A
To prevent any over-voltage from being applied to equipment such as audio equipment by mistake.This power source device is provided with an input voltage detecting means 23 for detecting an AC input voltage, and for outputting a detectio...  
JP2001346327A
To provide a ground connection device for electric apparatus which permits complete ground connection in conformity with polarity to be conducted automatically.In this electric apparatus 2 which receives power supply from a commercial po...  
JP2001525158A
(57) It can be related with the circuit apparatus which summary book invention protects load from the polar error damage in a vehicles loading power supply network, and has a limit element and a trigger element, and the source of voltage...  
JP2001314032A
To provide a simplified and low-cost protection circuit for inverse connection of a power supply, which does not lower the power supply voltage for the connection of power supply.In an IC 11 of the SOI structure, a constant current circu...  
JP3226002B2
PURPOSE: To provide a reverse-current blocking circuit which is less in voltage drop and power loss when the circuit operates normally. CONSTITUTION: A pair of power terminals 2 and 3 is provided to connect a DC power source 1 composed o...  
JP3222886B2  
JP3220427B2
To constitute a circuit performing reverse battery protection, current detection and temperature detection for a power supply circuit inexpensively by connecting a power semiconductor device in series with the forward current path in a p...  
JP3219965B2
PURPOSE: To protect a machine against breakdown due to short circuit of a line connecting the machine body and an auxiliary machine. CONSTITUTION: A short circuit detection Zener diode Zd has a Zener voltage lower than that of a short ci...  
JP2001286135A
To provide a drive method of a semiconductor switching element for preventing large reverse current even during the start or the failure of a converter and suppressing the voltage change on the load. A first control signal corresponding ...  
JP2001268784A
To provide an inverse connection preventing circuit of a power source wherein it is not necessary to increase the size, the cost is not increased and efficiency is not decreased when consumption current in a load is increased.This protec...  
JP2001251758A
To always operate an electronic device in normal condition not depending on the polarity of power supplied from the outside.A connector 1a located in an electronic device 1 is engaged with a connector 2a, provided a the end of a connecti...  
JP2001245476A
To provide a power source device capable of outputting voltage proper to an electronic apparatus without temporarily supplying improper voltage to the electronic apparatus.The power source device is provided with a power source circuit 3...  

Matches 651 - 700 out of 1,753