CN2275773Y

CN2275773Y - Non-variable resistance type adjustable power switch set

Info

Publication number: CN2275773Y
Application number: CN 96212115
Authority: CN
Inventors: 洪文辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-29
Filing date: 1996-05-29
Publication date: 1998-03-04
Anticipated expiration: 2006-05-29

Abstract

The utility model discloses a non-variable resistance type adjustable power switch group and is composed of a multiple section switch, a first resistance, a brake liquid body and a triggering apparatus. When the non-variable resistance type adjustable power switch group is used, a load is connected in series with the non-variable resistance type adjustable power switch group between power supplies, and the multiple section switch adjusts the output power on the load. When the largest power is in the output process, the output current only flows on the load and does not flow the brake liquid body. When the lower output power is adjusted, the current flows the brake liquid body. The non-variable resistance type adjustable power switch group has the positive effect of protecting the brake liquid body.

Description

Non-variable resistance type power-adjustable switches set

The utility model relates to a kind of electric switch, and particularly a kind of non-variable resistance type is regulated the Multi-band switch group of power output.

Existing electric product often can carry out necessary adjusting to power output for the convenience on using, for example to the change of electric light brightness, and to variation of electric fan wind-force or the like.Prior art all is to regulate the switches set that the circuits for triggering of this thyristor trigger voltage are formed with a simple open-close on-off, a thyristor that is connected in series with this open-close on-off and one by variable resistor, reaches this purpose.In other words, when this kind switches set is connected in series with electric light or fan,, can change the brightness of electric light or the wind speed of fan via regulating variable-resistance size.According to actual use experience, the major defect of this kind switches set, be when the load on the electric loop (as electric light or fan) when being in the high power output state, the thyristor of this switches set is owing to directly be connected in series with this load, must bear the big electric current of the entire circuit of flowing through, under this situation, therefore this thyristor can be subjected to excessive damage and lose efficacy early.

The purpose of this utility model is for overcoming the defective of above-mentioned prior art, a kind of non-variable resistance type power-adjustable switches set is provided, when making circuit load be in the peak power output state, the thyristor of this switches set can not bear the electric current on the circuit, and can reduce the manufacturing cost of prior art.

In order to realize aforementioned purpose, non-variable resistance type power-adjustable switch of the present utility model includes a Multi-band switch, and it has an input, some outputs and a bridgeware, and this bridgeware is by changing the position, and this input is connected with an output wherein;

One first resistance, its input is connected with one first output of this Multi-band switch; One thyristor, its input is connected with the input of this Multi-band switch, and output is connected with one second output of this Multi-band switch; And a trigger equipment, having an input and be connected with the output of this first resistance, a triggering signal output is connected with the gate of this thyristor, and an output is connected with the output of thyristor.Via aforementioned structure, when a load is connected in series with this switches set and desire when regulating power output in this load, the user need only change the bridgeware position of this Multi-band switch, can change the trigger voltage of this thyristor, and and then change the power output of integrated circuit, and because when the peak power output state, this switches set is that the output via its Multi-band switch directly is communicated with entire circuit, therefore, this thyristor can avoid bearing the electric current under this kind state, thereby, overcome the defective that has similar switch now effectively.

Enumerate two preferred embodiments of the present utility model below and also be described further in conjunction with the accompanying drawings, wherein:

Circuit diagram when Fig. 1 is the use of first preferred embodiment cooperation of the utility model electric light;

Circuit diagram when Fig. 2 is the use of second preferred embodiment cooperation of the utility model electric light.

Fig. 1 illustrates switches set 10 of the present utility model and an electric light 12 and is serially connected with an input voltage for exchanging on 120 volts the circuit, and the input of this electric light 12 is connected with power input.This switches set 10 is made of manual four sections switches 20, a silicon controlled rectifier (SCR) 30, a trigger equipment 40, one first resistance 50 and one second resistance 60.

These manual four sections switches 20 have an input 21, four

outputs

22,23,24,25, and a bridgeware 26.This input 21 is connected with the output of this electric light 12, and this bridgeware 26 is used for being communicated with this input 21 and an output wherein.For the convenience on using respectively this output be open circuit end 22, high power end 23, middle power end 24 and low-power end 25 according to the size discrimination of power output, this high power end 23 is for being connected directly to power output end.

The anode 31 of this silicon controlled rectifier 30 is connected to the input 21 of these four sections switches 20, and negative electrode 32 is connected to power output end, and 33 of its gates are connected with this trigger equipment 40.

This trigger equipment 40 has a diode 41, an and capacitor 42, the negative electrode 411 of this diode 41 is connected with the gate 33 of this silicon controlled rectifier 30, and anode 412 is connected with the input 421 of this capacitor 42, and the output 422 of this capacitor is connected with power output end.

The input 51 of this first resistance 50 is connected with the middle power end 24 of these four sections switches 20, and 52 of its outputs are connected with the anode 412 of this diode 41.The resistance of this second resistance 60 is greater than this first resistance 50, and its input 61 is connected with the low-power end 25 of these four sections switches 20, and 62 of its outputs are connected with the anode 412 of this diode 41 equally.

The use of relevant this switches set 10 is described as follows:

1. open circuit end 22 the time when the bridgeware 26 with these four sections switches 20 turns to this, this electric light 12 is in closed condition;

2. when desiring to make electric light 12 be in bright state, this bridgeware 26 is turned to this high power end 23, at this moment, because entire circuit there is no other elements except that electric light itself, so this electric light can produce maximum power;

3. when desiring to make electric light 12 be in the moderate bright state, this bridgeware 26 is turned to power take-off 24 in this, at this moment, because this trigger equipment 40 is controlled the trigger voltage that it exports this silicon controlled rectifier 30 to via this first resistance 50, and the resistance of this first resistance 50 is less than this second resistance 60, the trigger voltage that it provided, with the conducting angle that makes this silicon controlled rectifier greater than by the supplier of second resistance institute, therefore, this electric light can be in the moderate bright state of power in the generation.

4. when desiring to make electric light 12 to be in low lightness state, then this bridgeware 26 is turned to low-power output 25 and can reach purpose, it is described that its reason has been seen before.

Fig. 2 illustrates and is among another embodiment of the present utility model, the silicon controlled rectifier 30 of last embodiment can replace by a two-way reverse-blocking tetrode thyristor (TRIAC) 30 ', diode 41 in the trigger equipment 40 then can replace by a diac (DIAC) 41 ', the two only do not exist together in output, size is unequal during low-power.

By above stated specification as seen, switches set of the present utility model can make loading on when producing maximum power output of being mated, and the electric current in the circuit needn't be used for controlling the thyristor of power output via this, and the defective of so existing similar switch can be readily solved.

Claims

1. non-variable resistance type power-adjustable switches set is characterized in that it includes:

One Multi-band switch has an input, and some outputs and a bridgeware, this bridgeware be by changing the position, and this input is connected with an output wherein;

One first resistance, its input is connected with an output of this Multi-band switch;

One thyristor, its input is connected with the input of this Multi-band switch, and output is connected with another output of this Multi-band switch; And

One trigger equipment has an input and is connected with the output of this first resistance, and a triggering signal end is connected with the gate of this thyristor, and an output is connected with the output of thyristor.

2. according to the described switches set of claim 1, it is characterized in that it also includes one second resistance, its resistance value is greater than the resistance value of described first resistance, the input of this second resistance is connected with one the 3rd output of described Multi-band switch, and output is connected with the input of described trigger equipment.

3. according to claim 1 or 2 described switches set, it is characterized in that described thyristor is a silicon controlled rectifier (SCR), its anode is an input, and negative electrode is an output.

4. according to claim 1 or 2 described switches set, it is characterized in that described thyristor is a two-way reverse-blocking tetrode thyristor (TRIAC), its first anode is an output, and second plate is an input.

5. according to the described switches set of claim 3, it is characterized in that described trigger equipment includes a diode, its negative electrode is connected with the gate of described silicon controlled rectifier, and anode is connected with the output of described resistance; One capacitor, its input is connected with the anode of this diode, and output is connected with the negative electrode of described silicon controlled rectifier.

6. according to the described switches set of claim 4, it is characterized in that described trigger equipment includes a diac (DIAC), its first external connection end is connected with the output of described resistance, and second external connection end is connected with the gate of described bi-directional thyristor switch; One capacitor, its input is connected with first external connection end of this diac, and output is connected with the first anode of described bi-directional thyristor switch.