CN2139741Y

CN2139741Y - Power supply increase socket with load line display device

Info

Publication number: CN2139741Y
Application number: CN92208069U
Authority: CN
Inventors: 陈宏荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-25
Filing date: 1992-04-25
Publication date: 1993-08-04
Anticipated expiration: 2002-04-25

Abstract

The utility model provides a power supply increase socket with a load line display device, comprising a plug, a fuse, a display power supply switch and a socket. The utility model is characterized in that a resistance of high power and low impedance can be connected in series between the power supple switch and the socket, and a load line display meter can be connected in parallel in the two ends of the resistance. The utility model has the advantages that the common users who make nothing of electrical characteristic can also know that whether or not the power supply increase socket exceeds or is to exceed the load display, which can increase the safety of the electrical appliance.

Description

Power supply increase socket with load line display device

The utility model belongs to the supply socket technical field.

Existing power supply prolong socket is to connect several socket devices by a plug again through an electric wire of counting chi length to form, other has higher one fuse of additional serial again of the fail safe of consideration, another has one mains switch of additional serial again of considering convenience, reaches the deficiency of electric wire between electrical appliance and the wall socket or reaches the purpose of shared socket between electrical appliance.

Though sign withstand voltage, load is all arranged on the power supply prolong socket, but often general user 80 percent does not all use in accordance with regulations, be not that the person of being to use does not use in accordance with regulations, but 80 percent user thinks that too complexity or major part all there are not the user of electrical specification general knowledge using to electrical specification, cause under the frequent overload of power supply prolong socket use all not known, make the electric wire heating of power supply prolong socket and destroy insulating barrier and cause short circuit and cause the not within minority of fire.

The purpose of this utility model is to provide a kind of power supply prolong socket, refers to the power supply prolong socket of the linear demonstration of a kind of tool load especially.

The utility model is achieved in that the power supply prolong socket of the linear demonstration of a kind of tool load, by plug, fuse, demonstration mains switch, socket, it is characterized in that: have the resistance string of a high power Low ESR to be associated between mains switch and the socket, the linear display list of a load in parallel at the two ends of this resistance.

Advantage of the present utility model is to make the end user who generally is ignorant of electrical characteristic also can come into plain view the power supply prolong socket whether above the demonstration that maybe will overload, to increase the fail safe of electrical appliance because the linear display list of a load is set.

Be described further below in conjunction with accompanying drawing.

Fig. 1 is an outside drawing of the present utility model;

Fig. 2 is a circuit diagram of the present utility model.

See also Fig. 1, the linear display list (4) of load of the only many oil meters just like automobile of its surface structure, thermometer, other plug (1), fuse (2), display type mains switch (3), socket (5), (6) all the power supply prolong socket with general are identical.

See also Fig. 2; wherein AC power is to be entered through fuse (2) by plug (1); mains switch (3) and the socket that arrives (5); (6) out-put supply such as; wherein there is the resistance (7) of a high power Low ESR to be series at mains switch (3) and socket (5); (6) between; then resistance (7) voltage drop upward is big more when the load out-put supply is big more; otherwise then voltage drop is more little; the voltage drop that detects is through diode (8); capacitor (12) and voltage reducing resistor (9) are to display list (4); when showing above overload; promptly represent the loading again of this power supply prolong socket; otherwise with dangerous, diode (10); (11) be the protective device of display list (4).

Claims

1, the power supply prolong socket of the linear demonstration of a kind of tool load comprises: a plug, fuse, have the mains switch and the socket of demonstration and form, it is characterized in that: the resistance string of a high power Low ESR is coupled between mains switch and the socket, the linear display list of a load in parallel at the two ends of this resistance.