CN203038537U

CN203038537U - Parallel connection and series connection switching circuit

Info

Publication number: CN203038537U
Application number: CN 201320015929
Authority: CN
Inventors: 郑怀舟; 王晓峰; 李晓农
Original assignee: 郑怀舟
Priority date: 2013-01-14
Filing date: 2013-01-14
Publication date: 2013-07-03
Anticipated expiration: 2023-01-14

Abstract

The utility model relates to a circuit, specifically to a parallel connection and series connection switching circuit. The circuit is simple in structure, switching operation of a parallel connection circuit and a series connection circuit is very convenient, only simple actions need to be performed on a double-pole double-throw switch, and in addition, demonstration effects of different current and voltage division effects of resistors are obvious.

Description

A kind of parallel connection, serial conversion circuit

Technical field

The utility model relates to a kind of circuit, is specially a kind of parallel connection, serial conversion circuit.

Background technology

In the electric circuit teaching process, often relate to series circuit, the experiment of parallel circuit, usually all needing to build different circuit finishes, cumbersome and resistance is shunted in the difference that has of different circuit, the demonstration effect of dividing potential drop effect is remarkable inadequately, be that the Chinese utility model patent of 102486977A discloses a kind of parallel connection as publication number, the serial conversion switch, be used for realizing in parallel, the conversion of series circuit, but the operation of its conversion is more loaded down with trivial details, need operate by two different slide blocks, easy inadequately, in addition for the difference shunting of resistance at different circuit, the demonstration of dividing potential drop effect is effectively design not.

The utility model content

The purpose of this utility model provide a kind of simple in structure, in parallel, serial conversion is easy to operate, resistance is at the demonstration obvious results circuit of the shunting of the difference of different circuit, dividing potential drop effect.

Above-mentioned technical purpose of the present utility model is achieved by the following technical programs: comprise first bulb and second bulb, by three leads described two bulbs are cascaded and form a main line, be respectively arranged with first contact and second contact at main line two, lead one place that between first bulb and second bulb both is electrically connected is electrically connected to the 3rd contact, first contact is electrically connected to the 4th contact, this circuit also comprises power supply, the two ends of power supply are respectively equipped with the 5th contact and the 6th contact, second contact is electrically connected with the 6th contact, six above-mentioned contacts are installed on the double-point double-throw switch, the 5th contact and the 6th contact are electrically connected to respectively on two cuttves of switch, all the other four contacts are electrically connected to respectively on four binding posts of switch, the binding post that first contact is electrically connected, the binding post that the cutter that the 5th contact is electrically connected and the 3rd contact are electrically connected is as forming a single-pole single-throw switch (SPST) with the limit, the binding post that second contact is electrically connected, the binding post that the cutter that the 6th contact is electrically connected and the 4th contact are electrically connected is as forming a single-pole single-throw switch (SPST) with the limit.

Technique scheme, when the cutter of double-point double-throw switch is beaten on the binding post of the binding post of first contact and second contact, circuit is the parallel circuit of two bulbs, when the cutter of double-point double-throw switch is beaten on the binding post of the binding post of the 3rd contact and the 4th contact, circuit is the series circuit of two bulbs, and it is quite convenient to operate.

As of the present utility model preferred, the resistance of first bulb is greater than the resistance of second bulb.This optimal way can play and demonstrate effect preferably, when circuit was parallel circuit, first bulb was because resistance ratio second bulb is big, and the voltage at two resistance two ends is identical, then the electric current that flows through of first bulb is on the contrary little, by horse-power formula P=UI, so brightness ratio second bulb of first bulb is dark, because the resistance on the parallel circuit plays the effect of shunting, and when circuit is series circuit, then opposite, resistance plays the effect of dividing potential drop, so brightness ratio second bulb of first bulb is bright.

As of the present utility model preferred, the resistance of first bulb equals the resistance of second bulb.This optimal way can play equally demonstrates effect preferably, two bulbs are identical in the brightness with a kind of circuit, but the brightness of two bulbs is the brightness of two bulbs when being higher than series connection when in parallel, because the resistance of overall electrical resistance was the resistance during less than series connection when two resistance were in parallel, so shunting is bigger when in parallel, brightness is just better.

The beneficial effects of the utility model are: this circuit structure is simple, blocked operation in parallel, series circuit is very convenient, only need get final product by double-point double-throw switch is simply moved, in addition, for resistance shunt in the difference of different circuit, the demonstration effect of dividing potential drop effect is remarkable.

Description of drawings

Fig. 1 is the circuit diagram of the utility model embodiment 1.

Among the figure: 11, first bulb, 22, second bulb, 1, first contact, 2, second contact, the 3, the 3rd contact, the 4, the 4th contact, the 5, the 5th contact, the 6, the 6th contact, 10, power supply.

Embodiment

Following specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this instructions, but as long as all are subjected to the protection of Patent Law in claim scope of the present utility model.

Embodiment 1, as shown in Figure 1, a kind of parallel connection, the serial conversion circuit, comprise first bulb 11 and second bulb 22, by three leads two bulbs are cascaded and form a main line, be respectively arranged with first contact 1 and second contact 2 at main line two, lead one place that between first bulb 11 and second bulb 22 both is electrically connected is electrically connected to the 3rd contact 3 by lead, first contact 1 is electrically connected to the 4th contact 4 by lead, this circuit also comprises power supply 10, the two ends of power supply 10 are electrically connected with lead, be electrically connected to the 5th contact 5 and the 6th contact 6 respectively, second contact 2 is electrically connected by lead with the 6th contact 6, six above-mentioned contacts are installed on the double-point double-throw switch, the 5th contact 5 and the 6th contact 6 are electrically connected to respectively on two cuttves of switch, all the other four contacts are electrically connected to respectively on four binding posts of switch, the binding post that first contact 1 is electrically connected, the binding post that the cutter that the 5th contact 5 is electrically connected and the 3rd contact 3 are electrically connected is as forming a single-pole single-throw switch (SPST) with the limit, the binding post that second contact 2 is electrically connected, the binding post that the cutter that the 6th contact 6 is electrically connected and the 4th contact 4 are electrically connected is as forming a single-pole single-throw switch (SPST) with the limit.The resistance of first bulb 11 is greater than the resistance of second bulb 22.

Embodiment 2, and the difference of itself and embodiment 1 is: the resistance of first bulb 11 equals the resistance of second bulb 22.

Claims

1. parallel connection, the serial conversion circuit, it is characterized in that: comprise first bulb (11) and second bulb (22), by three leads described two bulbs are cascaded and form a main line, be respectively arranged with first contact (1) and second contact (2) at described main line two, lead one place that between described first bulb (11) and second bulb (22) both is electrically connected is electrically connected to the 3rd contact (3), described first contact (1) is electrically connected to the 4th contact (4), this circuit also comprises power supply (10), the two ends of described power supply (10) are respectively equipped with the 5th contact (5) and the 6th contact (6), described second contact (2) is electrically connected with described the 6th contact (6), six above-mentioned contacts are installed on the double-point double-throw switch, described the 5th contact (5) and the 6th contact (6) are electrically connected to respectively on two cuttves of switch, all the other four contacts are electrically connected to respectively on four binding posts of switch, the binding post that described first contact (1) is electrically connected, the binding post that the cutter that described the 5th contact (5) is electrically connected and the 3rd contact (3) are electrically connected is as forming a single-pole single-throw switch (SPST) with the limit, the binding post that described second contact (2) is electrically connected, the binding post that the cutter that described the 6th contact (6) is electrically connected and the 4th contact (4) are electrically connected is as forming a single-pole single-throw switch (SPST) with the limit.

2. a kind of parallel connection according to claim 1, serial conversion circuit, it is characterized in that: the resistance of described first bulb (11) is greater than the resistance of described second bulb (22).

3. a kind of parallel connection according to claim 1, serial conversion circuit, it is characterized in that: the resistance of described first bulb (11) equals the resistance of described second bulb (22).