CN204733324U - A kind of portable microphone - Google Patents
A kind of portable microphone Download PDFInfo
- Publication number
- CN204733324U CN204733324U CN201520376342.3U CN201520376342U CN204733324U CN 204733324 U CN204733324 U CN 204733324U CN 201520376342 U CN201520376342 U CN 201520376342U CN 204733324 U CN204733324 U CN 204733324U
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- China
- Prior art keywords
- microphone
- output
- relay
- input
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Abstract
The utility model provides a kind of portable microphone, comprise transformer base and microphone, microphone comprises interconnective handle and sound transducer, microphone is also provided with full-color light-emitting diode, handle is built-in with lithium battery, transformer base is provided with the groove of accommodating microphone, transformer base is connected by base charging inlet with microphone, microphone inside is provided with charging circuit, comparison circuit, reference voltage and lithium battery, the cathode output end of transformer base is connected with the output cathode of the output common port of relay and optocoupler, the output normal-closed end of relay is connected with the red input of the electrode input end of charging circuit and full-color light-emitting diode, the output Chang Kaiduan of relay and an input of relay, optocoupler output negative pole is connected with the green input of full-color light-emitting diode.The utility model, by relay, disconnects transformer base and charging circuit, charging circuit is disconnected completely, avoid situation about overcharging after battery is full of.
Description
Technical field
The utility model relates to microphone field, particularly relates to a kind of portable microphone.
Background technology
Existing portable microphone includes radio-circuit and storage battery, the circuit preventing from overcharging is had during charge in batteries, but existing circuit is all when being full of, charging circuit does not export, after having spent a period of time, cell voltage has declined a little a little, then charging circuit can charge again, just having there is the situation of floating charge in this, is easy to cause the life-span of microphone battery to reduce.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of portable microphone, solves the problem that microphone battery overcharges.
The utility model is achieved in that a kind of portable microphone, comprise transformer base and microphone, microphone comprises interconnective handle and sound transducer, microphone is also provided with full-color light-emitting diode, handle is built-in with lithium battery, transformer base is provided with the groove of accommodating microphone, transformer base is connected by base charging inlet with microphone, microphone inside is provided with charging circuit, comparison circuit, reference voltage and lithium battery, the cathode output end of transformer base is connected with the output cathode of the output common port of relay and optocoupler, the output normal-closed end of relay is connected with the red input of the electrode input end of charging circuit and full-color light-emitting diode, the output Chang Kaiduan of relay and an input of relay, optocoupler output negative pole is connected with the green input of full-color light-emitting diode, the cathode output end of charging circuit and the positive pole of lithium battery, the electrode input end of comparison circuit connects, the negative input of comparison circuit is connected with reference voltage, the output of comparison circuit is connected with the electrode input end of optocoupler, another input of relay, the cathode output end of transformer base, the negative input of charging circuit, the cathode output end of charging circuit, the negative pole of lithium battery, the negative input of optocoupler and the common end grounding of full-color light-emitting diode.
The utility model tool has the following advantages: by relay, disconnects transformer base and charging circuit after battery is full of, and charging circuit is disconnected completely, avoids the charging be full of to battery after electricity, avoids situation about overcharging.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model circuit.
Fig. 2 is the circuit diagram of the utility model circuit.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
Refer to Fig. 1 and Fig. 2, the utility model provides a kind of portable microphone, comprise transformer base 1 and microphone 2, microphone comprises interconnective handle 3 and sound transducer 4, microphone is also provided with full-color light-emitting diode 20, handle is built-in with lithium battery, transformer base is provided with the groove 5 of accommodating microphone, transformer base is connected by base charging inlet with microphone, microphone inside is provided with charging circuit, comparison circuit, reference voltage and lithium battery, the cathode output end of transformer base is connected with the output cathode of the output common port of relay LS1 and optocoupler U1, the output normal-closed end of relay is connected with the red input of the electrode input end of charging circuit and full-color light-emitting diode D1, the output Chang Kaiduan of relay and an input of relay, optocoupler output negative pole is connected with the green input of full-color light-emitting diode, the cathode output end of charging circuit and the positive pole of lithium battery BT1, the electrode input end of comparison circuit connects, the negative input of comparison circuit is connected with reference voltage, the output of comparison circuit is connected with the electrode input end of optocoupler, another input of relay, the cathode output end of transformer base, the negative input of charging circuit, the cathode output end of charging circuit, the negative pole of lithium battery, the negative input of optocoupler and the common end grounding of full-color light-emitting diode.
Wherein, relay is five pin relays, and under input no power state, the output common port of relay is connected with output normal-closed end, and under the state of input energising, the output common port of relay can be connected with output Chang Kaiduan.According to the voltage of different input, common model has varied, as the JQC-3F etc. of the SRD-12VDC-SL-C of 12V, 5V.Optocoupler is when input is energized, and inner light-emitting diode can be luminous, makes the triode ON of output.Common model has PC817, TLP351 etc.Transformer base for realizing the transformation of voltage, thus produces direct voltage, changes to direct voltage by alternating voltage.Common transformer base has charger for mobile phone etc.Charging circuit is used for the voltage of potential circuit to be charged in lithium battery, and charging circuit can realize voltage detecting, electric current and voltage control etc., can ensure the safety of lithium battery.Comparison circuit is for realizing the comparison of reference voltage and lithium battery voltage, and when lithium battery is full of, the voltage of lithium battery can higher than reference voltage, now comparison circuit exports high level, if lithium battery is not full of, then lithium battery voltage is lower than reference voltage, now comparison circuit output low level.Reference voltage is exactly a stable voltage, simply can carry out electric resistance partial pressure realization to the voltage of transformer base, requires that the high reference voltage chip that can adopt realizes stable reference voltage accurately.Lithium battery is used for powering to microphone.When the red input of full-color light-emitting diode obtains electric, can ruddiness be sent, when green input obtains electric, can green glow be sent.
The utility model in use, transformer base connects output dc voltage after external voltage, now the output common port of relay is interconnected with output Chang Kaiduan, transformer base is connected with charging circuit, charging circuit is to lithium cell charging, full-color diode BG light simultaneously, prompting is charged.Now lithium battery is not also full of electricity, and voltage is lower, comparison circuit output low level, and optocoupler does not work, and relay does not also work.After lithium battery is full of electricity, lithium battery voltage raises, lithium battery voltage is greater than reference voltage, now optocoupler luminescence work, optocoupler triode ON, the cathode voltage of transformer base is made to be added to the input of relay, relay input is made to obtain electric and start adhesive, after adhesive, the output common port of relay is connected with output Chang Kaiduan, the cathode output end of transformer base is made directly to receive the input of relay, the energising of latching relay, relay can be remained on always and export common port and the state that is connected of output Chang Kaiduan, thus be disconnected the physical connection of transformer base and charging circuit, lithium battery is not recharged, the red input of full-color light-emitting diode obtains electric simultaneously, send ruddiness, prompting user electricity is full of.Even if lithium battery voltage declines to some extent, also can not affect the work of relay, namely relay still can keep the state that the connection of transformer base and charging circuit disconnects.And when needs charge again to lithium battery, only need the power supply disconnecting transformer base, then once charge on the power supply connecting transformer base can carry out.Thus avoiding when power supply connects, lithium battery voltage declines the problem will carrying out charging a little.The utility model has completely cut off transformer base and charging circuit physically, it also avoid transformer base to problems such as the electromagnetic interference of charging voltage, namely user can be pointed out whether in charging and the state being full of electricity by a light-emitting diode simultaneously, save volume.
The foregoing is only embodiment of the present utility model; not thereby scope of patent protection of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. a portable microphone, it is characterized in that: comprise transformer base and microphone, microphone comprises interconnective handle and sound transducer, microphone is also provided with full-color light-emitting diode, handle is built-in with lithium battery, transformer base is provided with the groove of accommodating microphone, transformer base is connected by base charging inlet with microphone, microphone inside is provided with charging circuit, comparison circuit, reference voltage and lithium battery, the cathode output end of transformer base is connected with the output cathode of the output common port of relay and optocoupler, the output normal-closed end of relay is connected with the red input of the electrode input end of charging circuit and full-color light-emitting diode, the output Chang Kaiduan of relay and an input of relay, optocoupler output negative pole is connected with the green input of full-color light-emitting diode, the cathode output end of charging circuit and the positive pole of lithium battery, the electrode input end of comparison circuit connects, the negative input of comparison circuit is connected with reference voltage, the output of comparison circuit is connected with the electrode input end of optocoupler, another input of relay, the cathode output end of transformer base, the negative input of charging circuit, the cathode output end of charging circuit, the negative pole of lithium battery, the negative input of optocoupler and the common end grounding of full-color light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520376342.3U CN204733324U (en) | 2015-05-31 | 2015-05-31 | A kind of portable microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520376342.3U CN204733324U (en) | 2015-05-31 | 2015-05-31 | A kind of portable microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204733324U true CN204733324U (en) | 2015-10-28 |
Family
ID=54391648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520376342.3U Expired - Fee Related CN204733324U (en) | 2015-05-31 | 2015-05-31 | A kind of portable microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204733324U (en) |
-
2015
- 2015-05-31 CN CN201520376342.3U patent/CN204733324U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20160531 |