CN2491995Y

CN2491995Y - A.C/D.C power source automatic converter

Info

Publication number: CN2491995Y
Application number: CN 01206411
Authority: CN
Inventors: 兰安林
Original assignee: LAN ANHIN
Current assignee: LAN ANHIN
Priority date: 2001-06-01
Filing date: 2001-06-01
Publication date: 2002-05-15
Anticipated expiration: 2011-06-01

Abstract

The utility model discloses an alternating current and direct current power auto-transformation unit, which arranges a power output connecting end, an alternating current power plug, a power duplex master switch and an indicator luminescent tube on a shell, and electronic components such as a transformer, a diode, a resistance, a potentiometer, a capacitance, a triode, a relay, a direct current power are arranged in the shell. The utility model has the advantages that a reserve direct current power is automatically connected to an output end when an alternating current power failures. The utility model is particularly suitable for the consumer equipments such as lighting lamps in a hospital, household appliances, monitoring telephones and the like which are not capable of cutting the power as a power supply equipment.

Description

The power of alterating and direct current automatic transfer equipment

The utility model relates to a kind of power of alterating and direct current automatic transfer equipment, belongs to the electric supply installation technical field.

At present, existing commutation supply voltage device only can carry out alternating current after the rectification output DC source to output again, in case just do not have direct current output at its output when AC power has a power failure, at this moment continue power supply on the output with regard to needing the people that standby DC power supply is connected to, therefore existing electric supply installation is very inconvenient in use.

The purpose of this utility model is: provide a kind of power of alterating and direct current automatic transfer equipment that can automatically standby DC power supply be connected to output when AC power has a power failure, to overcome the deficiencies in the prior art.

The utility model is to constitute like this: it comprises shell (1), circuit board (2), circuit board (2) is contained in the shell (1), shell (1) is provided with power supply output link CZ, ac power plug CD, power supply duplex master switch K and indication luminous tube D3, on circuit board (2), transformer B is housed also, rectifier diode D1, D2, resistance R 1～R3, potentiometer RP, capacitor C 1～C3, triode V, relay J, DC power supply E, plug CD is connected with the primary coil of B, and on primary coil, also be in series with a switch among the duplex master switch K, the secondary coil of B meets D1 and D2 respectively, the secondary coil neutral earthing of B, the negative pole of D2 meets C2, the collector electrode of R1 and V, the negative pole of D1 meets C1, the normally opened contact J-1 of R3 and J, another termination C3 of R3, the emitter of J and V, the base stage of V by R2 and RP after ground connection, normally opened contact J-1 and the normally-closed contact J-2 of one termination J of another switch of duplex master switch K, its another termination CZ, another termination E of J-2, the negative pole of E, C1, C2, the other end of C3 and J and D3 negative pole be ground connection all, and the D3 positive pole meets R1.

Owing to adopted technique scheme, the utility model is compared with existing power supply device, the utlity model has the advantage that can automatically standby DC power supply be connected to output when AC power has a power failure.During use, earlier plug CD is connected on the AC power, electrical appliance is connected on the power supply output link CZ, then K switch is closed, when alternating current, V work, make the relay J action, its normally opened contact J-1 closure, normally-closed contact J-2 disconnect, and at this moment alternating current is exported to the CZ end after the D1 rectification, when AC power has a power failure, V ends, the J outage, its normally opened contact J-1 disconnects, normally-closed contact J-2 closure, thereby automatically standby DC power supply E is connected to the output of CZ end.The electric supply installation that the utility model is particularly suitable for can not cutting off the power supply as illuminating lamp, household electrical appliance, monitoring phone, monitoring TV etc. in the hospital uses.

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is a circuit theory schematic diagram of the present utility model.

Embodiment of the present utility model: shell (1) can adopt bakelite or plastic production, circuit board (2) is contained in the shell (1), on shell (1), set power supply output link CZ, ac power plug CD, power supply duplex master switch K and indication luminous tube D3, and on circuit board (2), load onto transformer B, rectifier diode D1, D2, resistance R 1～R3, potentiometer RP, capacitor C 1～C3, triode V, relay J, DC power supply E, install when connecting, plug CD is connected with the primary coil of B, an and switch on primary coil among the series connection duplex master switch K, the secondary coil of B is met D1 and D2 respectively, secondary coil neutral earthing with B, the negative pole of D2 is met C2, the collector electrode of R1 and V, the negative pole of D1 meets C1, the normally opened contact J-1 of R3 and J, another termination C3 of R3, the emitter of J and V, the base stage of V by R2 and RP after ground connection, normally opened contact J-1 and normally-closed contact J-2 with a termination J of another switch of duplex master switch K, its another termination CZ, another termination E of J-2, negative pole with E, C1, C2, the other end of C3 and J and D3 negative pole be all ground connection, and the D3 positive pole is met R1.

Claims

1, a kind of power of alterating and direct current automatic transfer equipment, it comprises shell (1), circuit board (2), circuit board (2) is contained in the shell (1), shell (1) is provided with power supply output link CZ, ac power plug CD, power supply duplex master switch K and indication luminous tube D3, it is characterized in that: on circuit board (2), transformer B is housed also, rectifier diode D1, D2, resistance R 1～R3, potentiometer RP, capacitor C 1～C3, triode V, relay J, DC power supply E, plug CD is connected with the primary coil of B, and on primary coil, also be in series with a switch among the duplex master switch K, the secondary coil of B meets D1 and D2 respectively, the secondary coil neutral earthing of B, the negative pole of D2 meets C2, the collector electrode of R1 and V, the negative pole of D1 meets C1, the normally opened contact J-1 of R3 and J, another termination C3 of R3, the emitter of J and V, the base stage of V by R2 and RP after ground connection, normally opened contact J-1 and the normally-closed contact J-2 of one termination J of another switch of duplex master switch K, its another termination CZ, another termination E of J-2, the negative pole of E, C1, C2, the other end of C3 and J and D3 negative pole be ground connection all, and the D3 positive pole meets R1.