CN1039693A - Auto-reflex loudspeaker - Google Patents
Auto-reflex loudspeaker Download PDFInfo
- Publication number
- CN1039693A CN1039693A CN 88103281 CN88103281A CN1039693A CN 1039693 A CN1039693 A CN 1039693A CN 88103281 CN88103281 CN 88103281 CN 88103281 A CN88103281 A CN 88103281A CN 1039693 A CN1039693 A CN 1039693A
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- CN
- China
- Prior art keywords
- auto
- circuit
- loudspeaker
- reflex loudspeaker
- reflex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention belongs to a kind ofly on the basis of dynamic speaker,, realize the auto-reflex loudspeaker of new-type circuit through improving.This loud speaker employing single-tone circle double winding or simplex winding are tapped.The novel power amplification circuit that this loud speaker produces has been simplified the primary circuit structure greatly.Novel power amplification circuit, the OCL output capacitance-less device, power supply adopts single supply, has improved the power utilization rate.Simultaneously, the double winding auto-reflex loudspeaker can also carry out impedance conversion.
Description
The invention belongs to a kind of on the basis of dynamic speaker, a kind of New-type loudspeaker that has improved from circuit.This loud speaker adopts single-tone circle double winding, or simplex winding is tapped.After adopting this loud speaker, can simplify circuit structure greatly, improve the power utilization rate, be easy to realize impedance conversion, improve the fidelity of circuit.
The loud speaker that existing Active crossover mode connects though frequency division is good, can more freely be adjusted each frequency range, makes loud speaker all have the amplifier of optimal damping coefficient to cooperate with it, complex structure, and price is higher.
Task of the present invention is that the auto-reflex loudspeaker that has improved on a kind of circuit will be provided.Adopt this loud speaker can produce novel power amplification circuit, an all-wave is divided into two half-waves, positive-negative half-cycle is imported separately.And the paraphase of power amplification circuit partly, promptly can be replaced by auto-reflex loudspeaker, and this loud speaker is formed by being operated in following two single-ended amplifiers of first, Class B state, has simplified circuit structure so greatly, has improved the power utilization rate.Because of having adopted novel power amplification circuit, the circuit working point of two single-ended amplifiers is independent of each other, and is adjusted at optimum Working easily.The intermodulation distortion and the nonlinear distortion of circuit reduce greatly.Simultaneously, the double winding auto-reflex loudspeaker can also carry out impedance conversion.Impedance is 8 Ω during former loud speaker simplex winding, realize impedance conversion after, two winding parallel impedances are 4 Ω, series impedance is 16 Ω.The new-type circuit of having improved is compared with existing power amplifier: new-type circuit is than transformer coupling, push-pull power amplifier efficient height, frequency band influences, leakage inductance and distributed capacitance or high or low frequency under the additional phase shift that produces little, output transformerless power loss, cost is low.New-type circuit is than OTL (out-put-transformer-less) amplifying circuit: (being the OTL circuit) supply voltage is reduced to 1/2, and without output capacitor, cost is low, Frequency Response is high, distortion is little.New-type circuit and nothing input, OTL (out-put-transformer-less) (being the OCL circuit) compares: the OCL output capacitance-less device, power supply adopts single supply, and (and primary circuit employing dual power supply) cost is low, Frequency Response is high, distortion is little.New-type circuit specific power amplifying circuit: simplified half from circuit, cost is low, Frequency Response is high, distortion is little.
One embodiment of the present of invention have been described among the figure.
Fig. 1 is a circuit diagram of the present invention.
Fig. 2 is an impedance conversion application drawing of the present invention.
The operation principle that task of the present invention is finished mode is: during the positive half cycle of signal (on the input transformer
+Down
-The time) BG
2Conducting, BG
1End collector current iC
1The from top to down RL that flows through
1, these two half-wave voltage signal IC
2And IC
1The equivalent RL that in one-period, is added to anti-phasely
1And RL
2, the electric current RL that flows through is respectively all arranged in the signal positive-negative half-cycle like this
1And RL
2, a complete signal is by loudspeaker voice coil loudspeaker voice coil (RL
1, RL
2Be the loudspeaker voice coil loudspeaker voice coil).Simultaneously, in load, wait until a complete distortionless signal waveform.
Claims (3)
1, a kind of on the basis of dynamic speaker, carry out the New-type loudspeaker that circuit has improved, it is characterized in that: the auto-reflex loudspeaker that single-tone circle double winding or simplex winding are tapped.
2, auto-reflex loudspeaker according to claim 1 is characterized in that: the impedance conversion of loudspeaker is convenient.
3, auto-reflex loudspeaker according to claim 1 is characterized in that: the amplifying circuit OTL (out-put-transformer-less), and the OCL output capacitance-less device, and adopted single supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103281 CN1039693A (en) | 1988-05-29 | 1988-05-29 | Auto-reflex loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103281 CN1039693A (en) | 1988-05-29 | 1988-05-29 | Auto-reflex loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1039693A true CN1039693A (en) | 1990-02-14 |
Family
ID=4832525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103281 Pending CN1039693A (en) | 1988-05-29 | 1988-05-29 | Auto-reflex loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039693A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1812659B (en) * | 2005-12-29 | 2011-12-21 | 颜怀伟 | Internal and external double-magnetic hollow magnetic core type loudspeaker and power amplification and control circuit |
| CN1819711B (en) * | 2005-12-29 | 2011-12-21 | 颜怀伟 | Hollow magnetic-core loundspeaker with internal magnetic pole and voice coil, its power-driven and controlling circuit |
| CN1819714B (en) * | 2005-12-29 | 2011-12-21 | 颜怀伟 | Loud speaker with double magnetic pole and moving coil, its playing and controlling circuit for radio communication apparatus |
| CN1812652B (en) * | 2005-12-29 | 2012-04-25 | 颜怀伟 | Three-magnetic pole and three-voice coil integrated loudspeaker |
| CN103379413A (en) * | 2012-04-12 | 2013-10-30 | 鄂雨松 | Dual-voice-coil dual-magnet moving-coil loudspeaker |
-
1988
- 1988-05-29 CN CN 88103281 patent/CN1039693A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1812659B (en) * | 2005-12-29 | 2011-12-21 | 颜怀伟 | Internal and external double-magnetic hollow magnetic core type loudspeaker and power amplification and control circuit |
| CN1819711B (en) * | 2005-12-29 | 2011-12-21 | 颜怀伟 | Hollow magnetic-core loundspeaker with internal magnetic pole and voice coil, its power-driven and controlling circuit |
| CN1819714B (en) * | 2005-12-29 | 2011-12-21 | 颜怀伟 | Loud speaker with double magnetic pole and moving coil, its playing and controlling circuit for radio communication apparatus |
| CN1812652B (en) * | 2005-12-29 | 2012-04-25 | 颜怀伟 | Three-magnetic pole and three-voice coil integrated loudspeaker |
| CN103379413A (en) * | 2012-04-12 | 2013-10-30 | 鄂雨松 | Dual-voice-coil dual-magnet moving-coil loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |