CN202798472U - Bridge self-excited oscillation circuit - Google Patents
Bridge self-excited oscillation circuit Download PDFInfo
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- CN202798472U CN202798472U CN 201220465878 CN201220465878U CN202798472U CN 202798472 U CN202798472 U CN 202798472U CN 201220465878 CN201220465878 CN 201220465878 CN 201220465878 U CN201220465878 U CN 201220465878U CN 202798472 U CN202798472 U CN 202798472U
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Abstract
The utility model discloses a bridge self-excited oscillation circuit which comprises a balanced bridge circuit and a phase-changing circuit. The balanced bridge circuit is characterized in that a collector electrode of a first transistor is electrically connected with a collector electrode of a second transistor, a source electrode of the first transistor is electrically connected with a collector electrode of a third transistor, a source electrode of the third transistor is grounded, a collector electrode of a fourth transistor is electrically connected with a source electrode of the second transistor, a source electrode of the fourth transistor is grounded, and a power input winding is bridged between the source electrode of the first transistor and the source electrode of the second transistor. The phase-changing circuit comprises a second winding, a third winding, a fourth winding and a fifth winding which are respectively coupled with the first winding, and two ends of each of the second winding, the third winding, the fourth winding and the fifth winding are electrically connected with base electrodes and the source electrodes of the second transistor, the first transistor, the fourth transistor and the third transistor respectively. The bridge self-excited oscillation circuit has the advantages that frequency accuracy and amplitude values of the oscillation circuit can be ensured, and the oscillation circuit realizes self-excited oscillation.
Description
Technical field
The utility model relates to a kind of oscillating circuit, particularly a kind of bridge-type self-oscillation circuit.
Background technology
The electric current that size and Orientation all changes with the cycle is oscillating current, and the circuit that can produce oscillating current just is called oscillating circuit.Wherein the simplest oscillating circuit is in the LC loop.Oscillating current is a kind of alternating current, is the very high alternating current of a kind of frequency, and it can't be given birth at magnetic field transfer movable property with coil, can only be produced by oscillating circuit.
It can not have been satisfied to the accuracy of concussion frequency and the requirement of amplitude in existing LC loop in existing a lot of electronic circuits, and concussion also needs external drive to shake.
The utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of bridge-type self-oscillation circuit.
The technical solution adopted in the utility model is such:.A kind of bridge-type self-oscillation circuit, this circuit comprises balance bridge type circuit and commutation circuit.
Above-mentioned balance bridge type circuit comprises: power supply input winding L, output winding L ' and 4 the first transistor T1, transistor seconds T2, the 3rd transistor T 3, the 4th transistor Ts 4 that electric parameter is identical, power supply input winding L with export winding L ' is coupled; Wherein the collector electrode of the first transistor T1 is electrically connected with the collector electrode of transistor seconds T2, wherein the source electrode of the first transistor T1 is electrically connected with the collector electrode of the 3rd transistor T 3, the source ground of the 3rd transistor T 3, the source electrode of transistor seconds T2 is electrically connected with the collector electrode of the 4th transistor T 4, the source ground of the 4th transistor T 4, one end of power supply input winding L is electrically connected with the source electrode of the first transistor T1 and the collector electrode of the 3rd transistor T 3, the other end is electrically connected with the source electrode of transistor seconds T2 and the collector electrode of the 4th transistor T 4, the output winding L ' be electrically connected with output end vo ut.
Above-mentioned commutation circuit comprises: the first winding L 1, the second winding L 2, tertiary winding L3, the 4th winding L 4 and the 5th winding L 5, and described the second winding L 2, tertiary winding L3, the 4th winding L 4 and the 5th winding L 5 all are coupled with the first winding L 1; The two ends of the first winding L 1 are electrically connected with input Vout; The two ends of the second winding L 2 are electrically connected with base stage and the source electrode of transistor seconds T2 respectively, tertiary winding L3 two ends be electrically connected with base stage and the source electrode of the first transistor T1 respectively, the two ends of the 4th winding L 4 are electrically connected with base stage and the source electrode of the 4th transistor T 5 respectively, and the two ends of the 5th winding L 5 are electrically connected with base stage and the source electrode of the 3rd transistor T 3 respectively.
Concrete, the second above-mentioned winding L 2 and the 5th winding L 5 homophases, tertiary winding L3 and the 4th winding L 4 homophases are cut the second winding L 2, the 5th winding L 5 and tertiary winding L3, the 4th winding L 4 is anti-phase.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are: can guarantee frequency accuracy and the amplitude of oscillating circuit, and realize own concussion.
Description of drawings
Fig. 1 is the circuit diagram of the utility model bridge-type self-oscillation circuit.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of bridge-type self-oscillation circuit, this circuit comprises balance bridge type circuit and commutation circuit.
Above-mentioned balance bridge type circuit comprises: power supply input winding L, output winding L ' and 4 the first transistor T1, transistor seconds T2, the 3rd transistor T 3, the 4th transistor Ts 4 that electric parameter is identical, power supply input winding L with export winding L ' is coupled; Wherein the collector electrode of the first transistor T1 is electrically connected with the collector electrode of transistor seconds T2, wherein the source electrode of the first transistor T1 is electrically connected with the collector electrode of the 3rd transistor T 3, the source ground of the 3rd transistor T 3, the source electrode of transistor seconds T2 is electrically connected with the collector electrode of the 4th transistor T 4, the source ground of the 4th transistor T 4, one end of power supply input winding L is electrically connected with the source electrode of the first transistor T1 and the collector electrode of the 3rd transistor T 3, the other end is electrically connected with the source electrode of transistor seconds T2 and the collector electrode of the 4th transistor T 4, the output winding L ' be electrically connected with output end vo ut.
Above-mentioned commutation circuit comprises: the first winding L 1, the second winding L 2, tertiary winding L3, the 4th winding L 4 and the 5th winding L 5, and described the 5th winding L 5, the second winding L 2, tertiary winding L3, the 4th winding L 4 all are coupled with the first winding L 1; The two ends of the first winding L 1 are electrically connected with input Vout; The two ends of the second winding L 2 are electrically connected with base stage and the source electrode of transistor seconds T2 respectively, tertiary winding L3 two ends be electrically connected with base stage and the source electrode of the first transistor T1 respectively, the two ends of the 4th winding L 4 are electrically connected with base stage and the source electrode of the 4th transistor T 5 respectively, and the two ends of the 5th winding L 5 are electrically connected with base stage and the source electrode of the 3rd transistor T 3 respectively.
Concrete, the second above-mentioned winding L 2 and the 5th winding L 5 homophases, tertiary winding L3 and the 4th winding L 4 homophases are cut the second winding L 2, the 5th winding L 5 and tertiary winding L3, the 4th winding L 4 is anti-phase.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (2)
1. a bridge-type self-oscillation circuit is characterized in that, comprises balance bridge type circuit and commutation circuit;
Described balance bridge type circuit comprises: power supply input winding (L), output winding (L ') and 4 the first transistor (T1), transistor seconds (T2), the 3rd transistor (T3), the 4th transistors (T4) that electric parameter is identical, power supply input winding (L) with export winding (L ') and be coupled; Wherein the collector electrode of the first transistor (T1) is electrically connected with the collector electrode of transistor seconds (T2), the source electrode of the first transistor (T1) is electrically connected with the collector electrode of the 3rd transistor (T3), the source ground of the 3rd transistor (T3), the source electrode of transistor seconds (T2) is electrically connected with the collector electrode of the 4th transistor (T4), the source ground of the 4th transistor (T4), one end of power supply input winding (L) is electrically connected with the source electrode of the first transistor (T1) and the collector electrode of the 3rd transistor (T3), the other end is electrically connected with the source electrode of transistor seconds (T2) and the collector electrode of the 4th transistor (T4), and the output winding (L ') be electrically connected with output (Vout);
Described commutation circuit comprises: the first winding (L1), the second winding (L2), the tertiary winding (L3), the 4th winding (L4) and the 5th winding (L5), and described the 5th winding (L5), the second winding (L2), the tertiary winding (L3), the 4th winding (L4) all are coupled with the first winding (L1); The two ends of the first winding (L1) are electrically connected with input (Vout); The two ends of the second winding (L2) are electrically connected with base stage and the source electrode of transistor seconds (T2) respectively, the tertiary winding (L3) two ends be electrically connected with base stage and the source electrode of the first transistor (T1) respectively, the two ends of the 4th winding (L4) are electrically connected with base stage and the source electrode of the 4th transistor (T5) respectively, and the two ends of the 5th winding (L5) are electrically connected with base stage and the source electrode of the 3rd transistor (T3) respectively.
2. bridge-type self-oscillation circuit according to claim 1, it is characterized in that, described the second winding (L2) and the 5th winding (L5) homophase, the tertiary winding (L3) and the 4th winding (L4) homophase, cut the second winding (L2), the 5th winding (L5) with the tertiary winding (L3), (L4) is anti-phase for the 4th winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465878 CN202798472U (en) | 2012-09-13 | 2012-09-13 | Bridge self-excited oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465878 CN202798472U (en) | 2012-09-13 | 2012-09-13 | Bridge self-excited oscillation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202798472U true CN202798472U (en) | 2013-03-13 |
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ID=47825642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220465878 Expired - Fee Related CN202798472U (en) | 2012-09-13 | 2012-09-13 | Bridge self-excited oscillation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202798472U (en) |
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2012
- 2012-09-13 CN CN 201220465878 patent/CN202798472U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20130913 |