CN201117070Y - Over current voice alarm device - Google Patents
Over current voice alarm device Download PDFInfo
- Publication number
- CN201117070Y CN201117070Y CNU2007200301432U CN200720030143U CN201117070Y CN 201117070 Y CN201117070 Y CN 201117070Y CN U2007200301432 U CNU2007200301432 U CN U2007200301432U CN 200720030143 U CN200720030143 U CN 200720030143U CN 201117070 Y CN201117070 Y CN 201117070Y
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Abstract
The utility model relates to an over-current speech alarm device in the safely using electricity electric control field, the technical proposal is that an electric power supply circuit is composed of a transformer B, a diode D 1 and a capacitance C1, an over-current detecting circuit is composed of a current transformer L, a diode D 2, an adjustable resistance W, a resistance R1, a resistance R2, a capacitance C2, a capacitance C3, a time-base circuit IC (NE555), a resistance R5, a resistance R6 and a capacitance C3, and a PL is an alarm trumpet. The over-current speech alarm device has simple structure, convenient assembly and is installed on the needed power supply, can monitor the current of apparatus whether is over-high at any moment, when the current is over-high, the over-current speech alarm device alarms immediately, which achieves the goals of safety and warning.
Description
Technical field
The utility model relates to a kind of excess current phonetic alarm device in safety utilization of electric power control device field.
Background technology
At present the electrical equipment of industrial enterprise is many, and (such as the electrical appliance overload) and cause that electric current is excessive usually for a certain reason, and make electrical equipment or supply line cause damage.Though the comprehensive voltage-stabilizing protection control device of existing part, these device common configuration complexity, the cost height is difficult to promote the use of.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, provide a kind of circuit simple, easy to use, send the excess current voice warning circuit of audio alert automatically.
Its technical scheme is: form power-supplying circuit by transformer B, diode D1, capacitor C 1; Form overcurrent sensing circuit by current transformer L, diode D2, adjustable resistance W, resistance R 1, R2 capacitor C 2, C3, time base circuit IC (NE555), resistance R 5, R6, capacitor C 3; RL is an alarming horn.
The utlity model has simple in structure, install additional conveniently, be installed on the appliances power source that needs, can play the effect that monitors that at any time electric current is whether too high, its warning of can sounding immediately when electric current is too high; Play the purpose of safety, caution.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.A, N connect power supply among the figure; The current transformer of L electrical appliance.RL is from audio record alarming loudspeaker (existing shaped article).
Embodiment
Be further described with regard to its principle of work below in conjunction with accompanying drawing: transformer B connects diode D1, capacitor C 1 is formed power-supplying circuit.Current transformer L connects diode D2, adjustable resistance W, resistance R 1, R2 capacitor C 2, C3, time base circuit IC (NE555), resistance R 5, R6, capacitor C 3 composition overcurrent sensing circuits.
The power-supplying circuit that energized A, N are made up of transformer B, diode D1, capacitor C 1 is to forming overcurrent sensing circuit by time base circuit IC (NE555), resistance R 5, R6, capacitor C 3 etc. and alarming horn RL provides power supply.
When current transformer L detects electric current just often, the 6 pin voltages of time base circuit IC (NE555) are lower than 2/3 of its supply voltage, thus 3 pin of time base circuit IC (NE555) output high level, alarming horn RL non-transformer and not reporting to the police;
When current transformer L detected electric current above normal value, the 6 pin voltages of time base circuit IC (NE555) were higher than 2/3 of its supply voltage, so the 3 pin output low levels of time base circuit IC (NE555), alarming horn RL obtains power supply and sends warning; Adjustable resistance W is used to set alarming value.
If flashlamp in parallel on loudspeaker can also have sound, light warning effect simultaneously.
Claims (2)
1, a kind of excess current phonetic alarm device is characterized in that: the circuit of forming this device comprises that power-supplying circuit, overcurrent sensing circuit and alarming horn RL connect and compose, and wherein connect to form power-supplying circuit by transformer B, diode D1, capacitor C 1; Connect to form overcurrent sensing circuit by current transformer L, diode D2, adjustable resistance W, resistance R 1, R2 capacitor C 2, C3, time base circuit IC, resistance R 5, R6, capacitor C 3.
2, excess current phonetic alarm device according to claim 1 is characterized in that: flashlamp in parallel on alarming horn RL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200301432U CN201117070Y (en) | 2007-11-02 | 2007-11-02 | Over current voice alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200301432U CN201117070Y (en) | 2007-11-02 | 2007-11-02 | Over current voice alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201117070Y true CN201117070Y (en) | 2008-09-17 |
Family
ID=39991646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200301432U Expired - Fee Related CN201117070Y (en) | 2007-11-02 | 2007-11-02 | Over current voice alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201117070Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487637A (en) * | 2013-09-30 | 2014-01-01 | 常熟市明阳电器安装工程有限公司 | Electric device abnormal current monitoring system |
-
2007
- 2007-11-02 CN CNU2007200301432U patent/CN201117070Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487637A (en) * | 2013-09-30 | 2014-01-01 | 常熟市明阳电器安装工程有限公司 | Electric device abnormal current monitoring system |
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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: 20080917 Termination date: 20091202 |