CN203859579U - Alarm dual power changeover switch - Google Patents
Alarm dual power changeover switch Download PDFInfo
- Publication number
- CN203859579U CN203859579U CN201420280388.0U CN201420280388U CN203859579U CN 203859579 U CN203859579 U CN 203859579U CN 201420280388 U CN201420280388 U CN 201420280388U CN 203859579 U CN203859579 U CN 203859579U
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- transistor
- power supply
- resistance
- loud speaker
- photo resistance
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Abstract
The utility model discloses an alarm dual power changeover switch. The switch comprises a standby power supply breaker, a frequent-used power supply breaker, a double-throw switch, and a housing. The frequent-used power supply breaker is connected with a power-off alarm device that comprises a sensing circuit and a low frequency oscillation circuit. The sensing circuit is provided with an induction lamp. The low frequency oscillation circuit comprises a transistor VT1, a transistor VT2, a light dependent resistor and a loudspeaker. The two ends of the light dependent resistor are respectively connected to the base electrode of the transistor VT1 and the loudspeaker. The two emitting electrodes of the transistor VT1 are respectively connected to the transistor VT2 and the loudspeaker. The two emitting electrodes of the transistor VT2 are respectively connected to the light dependent resistor and the loudspeaker. A resistor R1 and a power supply are disposed between the transistor VT2 and the light dependent resistor. The alarm dual power changeover switch aims to emit an alarm when the frequent-used power supply is powered off. The main points of the technical scheme are that the switch is additionally provided with the power-off alarm device in the frequent-used power supply breaker.
Description
Technical field
The utility model relates to a kind of circuit switchgear, and more particularly, it relates to a kind of double power supply converting switch.
Background technology
Double power supply converting switch refers to: a kind ofly by microprocessor, controlled, for network system net electricity and net electricity or net electricity, start with generator power supply the device switching, in network system, electric current is alternating current, can make the power supply of power supply continuous source, when conventional electric catastrophic failure or power failure, pass through double power supply converting switch, automatically put on stand-by power supply, (under little load, stand-by power supply also can be by generator powered) still can normally move equipment, and modal is in elevator, fire-fighting, monitoring.
At present, (Chinese patent that application number is 20132008098.9 discloses a kind of double power supply converting switch) on market, it comprises auxiliaries-supply circuit-breaker, conventional power circuit breaker, mounting panel, double-throw switch, housing and fire-disaster monitoring device.Although this double power supply converting switch can carry out monitoring alarm to fire, but in fact be generally arranged on can not power-off or power-off setting, the place that will cause a large amount of damages for double power supply converting switch, and above-mentioned double power supply converting switch can not play alarm function after conventional power cut-off, may cause repairman not perceive fault in time and cause repairing not in time.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of double power supply converting switch with power failure alarm device.
For achieving the above object, the utility model provides following technical scheme: a kind of warning double power supply converting switch, comprise with auxiliaries-supply circuit-breaker, conventional power circuit breaker, double-throw switch, housing, wherein, on described conventional power circuit breaker, be connected with power failure alarm device, described power failure alarm device comprises sensing circuit and low-frequency oscillatory network, described sensing circuit is provided with sense light and described sense light is in parallel with conventional power circuit breaker, described low-frequency oscillatory network includes transistor VT1, transistor VT2, photo resistance and loud speaker, described photo resistance two ends connect respectively base stage and the loud speaker of transistor VT1, two emitters of described transistor VT1 are connected in the base stage and loud speaker of transistor VT2, two emitters of described transistor VT2 respectively with photo resistance, loud speaker connects, between described transistor VT2 and photo resistance, be provided with resistance R 1 and power supply.
By adopting technique scheme, while being connected with civil power in described conventional power circuit breaker, described sense light is luminous, the light that described sense light sends is radiated in photo resistance, described photo resistance resistance reduces, this is that direct voltage on described power supply is added to the base stage of transistor VT1 by the voltage of resistance R 1 and photo resistance dividing potential drop, because photo resistance resistance is little, transistor VT1 cut-off, now warning circuit is not worked, when civil power power-off, described sense light does not work, described photo resistance resistance obviously increases, that transistor VT1 is in magnifying state, at this moment the low-frequency oscillatory network work that described transistor VT1 and transistor VT2 and peripheral element thereof form, loud speaker is reported to the police, reach when conventional power circuit breaker power-off, described warning double power supply converting switch plays alarm function.
The utility model is further set to: described loud speaker two ends have been arranged in parallel light-emitting diode.
By adopting technique scheme, when loud speaker is reported to the police, described light-emitting diode also can luminously indicate described conventional power circuit breaker power supply to disconnect, and reaches the effect of dual-alarm, avoids in the large environment of noise, also can playing alarm function because of described warning double power supply converting switch.
The utility model is further set to: in described resistance R 1, be arranged in parallel resistance R 2, on two emitters of described transistor VT2, be arranged in parallel electric capacity.
By adopting technique scheme, described resistance R 2 forms the regenerative circuit in low-frequency oscillatory network with electric capacity, described regenerative circuit can guarantee that the feedback signal producing in described low-frequency oscillatory network is that phase place is identical, guarantee that vibration maintains down, guarantees described low-frequency oscillatory network continuous firing.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model warning double power supply converting switch embodiment;
Fig. 2 is warning circuit schematic diagram in the utility model warning double power supply converting switch embodiment.
Reference numeral: 1. housing; 2. double-throw switch; 3. commonly use power circuit breaker; 4. auxiliaries-supply circuit-breaker; 5. sensing circuit; 51. halfwave rectifier; 52. filtering; 53. sense lights; 54. resistance R 3; 6. low-frequency oscillatory network; 61. photo resistance; 62. resistance R 1; 63. resistance R 2; 64. transistor VT1; 65. transistor VT2; 66. loud speakers; 67. power supplys; 68. electric capacity; 69 light-emitting diodes.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model embodiment is described further.
A kind of duplicate supply 67 diverter switches, comprise with stand-by power supply 67 circuit breakers 4, conventional power supply 67 circuit breakers 3, double-throw switch 2, housing 1, on described conventional power supply 67 circuit breakers 3, be connected with power failure alarm device, described power failure alarm device comprises sensing circuit 5 and low-frequency oscillatory network 6, described sensing circuit 5 is provided with sense light 53 and described sense light 53 is in parallel with conventional power supply 67 circuit breakers 3, in described duplicate supply 67 diverter switches, institute's galvanization is electric main, make the normal work of described sense light 53 need to increase conversion equipment, it is known technology that alternating current turns direct current, therefore do not limit in the utility model embodiment, in the present embodiment, adopting halfwave rectifier 51 to add filtering 52 devices makes electric main transfer direct current to, on described sense light 53, be in series with low-frequency oscillatory network 6 described in protective resistance (R3) 54 and comprise transistor VT1, transistor VT2, photo resistance 61, loud speaker 66, described photo resistance 61 two ends connect respectively base stage and the loud speaker 66 of transistor (VT1) 64, two emitters of described transistor (VT1) 64 are connected in the base stage and loud speaker 66 of transistor (VT2) 65, two emitters of described transistor (VT2) 65 respectively with photo resistance 61, loud speaker 66 connects, between described transistor (VT2) 65 and photo resistance 61, be provided with resistance (R1) 62 and power supply 67, while being connected with civil power in described conventional power supply 67 circuit breakers 3, described sense light 53 is luminous, the light that described sense light 53 sends is radiated in photo resistance 61, described photo resistance 61 resistances reduce, this is that direct voltage on described power supply 67 is added to the base stage of transistor (VT1) 64 by the voltage of resistance (R1) 62 and photo resistance 61 dividing potential drops, because photo resistance 61 resistances are little, transistor (VT1) 64 cut-offs, now warning circuit is not worked, when civil power power-off, described sense light 53 does not work, described photo resistance 61 resistances obviously increase, that transistor (VT1) 64 is in magnifying state, at this moment described transistor (VT1) 64 is worked with the low-frequency oscillatory network 6 that transistor (VT2) 65 and peripheral element thereof form, loud speaker 66 is reported to the police, reach when conventional power supply 67 circuit breaker 3 power-off, described duplicate supply 67 diverter switches play alarm function.
Described loud speaker 66 two ends have been arranged in parallel light-emitting diode 69, when loud speaker 66 is reported to the police, described light-emitting diode 69 also can luminously indicate described conventional power supply 67 circuit breaker 3 power supplys 67 to disconnect, reach the effect of dual-alarm, avoid in the large environment of noise, also can playing alarm function because of described duplicate supply 67 change over switches.
On described resistance (R1) 62, be arranged in parallel resistance (R2) 63, on two emitters of described transistor (VT2) 65, be arranged in parallel electric capacity 68, the regenerative circuit that described resistance (R2) 63 and electric capacity 68 form in low-frequency oscillatory networks 6, described regenerative circuit can guarantee that the feedback signal producing in described low-frequency oscillatory network 6 is that phase place is identical, guarantee that vibration maintains down, guarantees described low-frequency oscillatory network 6 continuous firings.
The above is only preferred implementation of the present utility model, and protection range of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (3)
1. a warning double power supply converting switch, comprise with auxiliaries-supply circuit-breaker, conventional power circuit breaker, double-throw switch and housing, it is characterized in that: on described conventional power circuit breaker, be connected with power failure alarm device, described power failure alarm device comprises sensing circuit and low-frequency oscillatory network, described sensing circuit is provided with sense light and described sense light is in parallel with conventional power circuit breaker, described low-frequency oscillatory network includes transistor VT1, transistor VT2, photo resistance and loud speaker, described photo resistance two ends connect respectively base stage and the loud speaker of transistor VT1, two emitters of described transistor VT1 are connected in the base stage and loud speaker of transistor VT2, two emitters of described transistor VT2 respectively with photo resistance, loud speaker connects, between described transistor VT2 and photo resistance, be provided with resistance R 1 and power supply.
2. warning double power supply converting switch according to claim 1, is characterized in that: described loud speaker two ends have been arranged in parallel light-emitting diode.
3. warning double power supply converting switch according to claim 1 and 2, is characterized in that: in described resistance R 1, be arranged in parallel resistance R 2, on two emitters of described transistor VT2, be arranged in parallel electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280388.0U CN203859579U (en) | 2014-05-28 | 2014-05-28 | Alarm dual power changeover switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280388.0U CN203859579U (en) | 2014-05-28 | 2014-05-28 | Alarm dual power changeover switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859579U true CN203859579U (en) | 2014-10-01 |
Family
ID=51609418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420280388.0U Expired - Fee Related CN203859579U (en) | 2014-05-28 | 2014-05-28 | Alarm dual power changeover switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203859579U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793310A (en) * | 2016-12-29 | 2017-05-31 | 重庆市渝展电气有限公司 | Possesses the distribution box of illumination functions |
| CN110045193A (en) * | 2019-03-06 | 2019-07-23 | 珠海博雅科技有限公司 | A kind of floating-gate device thump telegraph repeater measuring system and measurement method |
-
2014
- 2014-05-28 CN CN201420280388.0U patent/CN203859579U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793310A (en) * | 2016-12-29 | 2017-05-31 | 重庆市渝展电气有限公司 | Possesses the distribution box of illumination functions |
| CN106793310B (en) * | 2016-12-29 | 2018-01-26 | 重庆市渝展电气有限公司 | Possesses the distribution box of illumination functions |
| CN110045193A (en) * | 2019-03-06 | 2019-07-23 | 珠海博雅科技有限公司 | A kind of floating-gate device thump telegraph repeater measuring system and measurement method |
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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: 20141001 Termination date: 20160528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |