CN201577029U - Student used experiment power supply - Google Patents
Student used experiment power supply Download PDFInfo
- Publication number
- CN201577029U CN201577029U CN2009202821290U CN200920282129U CN201577029U CN 201577029 U CN201577029 U CN 201577029U CN 2009202821290 U CN2009202821290 U CN 2009202821290U CN 200920282129 U CN200920282129 U CN 200920282129U CN 201577029 U CN201577029 U CN 201577029U
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- China
- Prior art keywords
- electric capacity
- resistance
- power supply
- isolating transformer
- circuit
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- Expired - Fee Related
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Abstract
A student used experiment power supply comprises a voltage regulating circuit, an isolating transformer, a rectification circuit and an overload alarm circuit; the voltage regulating circuit is connected with the primary phase of the isolating transformer; the secondary phase of the isolating transformer is connected with the rectification circuit and the overload alarm circuit. Compared with the prior arts, the power supply of the utility model achieves the advantages of simple structure, convenient using, low cost, overload alarm and continuously adjustable output voltage.
Description
Technical field
The utility model relates to a kind of experimental power supply, is that a kind of student uses experimental power supply concretely.
Background technology
At present, existing student uses experimental power supply, all be that transformer secondary is provided with a plurality of taps, utilize the change over switch regulation voltage, other is provided with the version of rectifying and voltage-stabilizing, this power supply exists that complex structure, cost are higher, change over switch is struck sparks easily during changing voltage, its output voltage can not be adjustable continuously, uses extremely inconvenient.
The utility model content
The purpose of this utility model is exactly the defective that exists at prior art, provides a kind of simple in structure, with low cost, output voltage continuously adjustable student to use experimental power supply.
Its technical scheme is: be made up of regulating circuit, isolating transformer, rectification circuit and overload-alarm circuit.Described regulating circuit is connected with the elementary of isolating transformer, and the secondary and rectification circuit of isolating transformer is connected with the overload-alarm circuit.Described regulating circuit is by first electric capacity, second electric capacity, the 3rd electric capacity, first resistance, second resistance, the 3rd resistance, potentiometer, bidirectional triode thyristor and bidirectional diode are formed, wherein the anode of bidirectional triode thyristor is divided into three the tunnel, the first via is connected with the power supply phase line, the second the tunnel is connected with an end of first resistance, Third Road is connected with an end of second resistance, the elementary end of the negative electrode of bidirectional triode thyristor and isolating transformer is connected, the other end of first resistance is connected with the negative electrode of bidirectional triode thyristor by first electric capacity, the other end of second resistance is connected with an end of potentiometer, the other end of potentiometer is connected with an end of bidirectional diode and an end of second electric capacity respectively, the other end of bidirectional diode is connected with the control utmost point of bidirectional triode thyristor, and the other end of second electric capacity is connected with the negative electrode of bidirectional triode thyristor; The elementary two ends of isolating transformer also are connected with the 3rd resistance and the 3rd electric capacity of mutual series connection.Described rectification circuit is made up of rectifier bridge and the 4th electric capacity, and wherein the rectifier bridge input is connected with the secondary of isolating transformer, and the cathode output end of rectifier bridge is connected with the positive pole of the 4th electric capacity, and the cathode output end of rectifier bridge is connected with the negative pole of the 4th electric capacity.Described overload-alarm circuit is made up of tongue tube and buzzer, wherein an end of tongue tube is connected with the positive pole of the 4th electric capacity, the other end is connected by the negative pole of buzzer with the 4th electric capacity, be wound with coil on the tongue tube, the two ends of coil are connected between the positive pole and direct current output cathode end of the 4th electric capacity.The negative pole of the 4th electric capacity connects direct current output negative pole end.
The utility model compared with prior art, having simple in structure, easy to use, with low cost, overload-alarm and output voltage can continuously adjustable advantage.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment of the utility model.
Embodiment:
As shown in the figure, a kind of student uses experimental power supply, is made up of regulating circuit, isolating transformer, rectification circuit and overload-alarm circuit.Described regulating circuit is connected with the elementary of isolating transformer, is connected with the overload-alarm circuit from the secondary and rectification circuit of transformer.Described regulating circuit is by first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, first resistance R 1, second resistance R 2, the 3rd resistance R 3, potentiometer W, bidirectional triode thyristor STR and bidirectional diode D form, wherein the anode of bidirectional triode thyristor STR is divided into three the tunnel, the first via is connected with power supply phase line A, the second the tunnel is connected with an end of first resistance R 1, Third Road is connected with an end of second resistance R 2, the elementary end of the negative electrode of bidirectional triode thyristor STR and isolating transformer B is connected, the other end of first resistance R 1 is connected with the negative electrode of bidirectional triode thyristor STR by first capacitor C 1, the other end of second resistance R 2 is connected with the end of potentiometer W, the other end of potentiometer W is connected with the end of bidirectional diode D and an end of second capacitor C 2 respectively, the other end of bidirectional diode D is connected with the control utmost point of bidirectional triode thyristor STR, and the other end of second capacitor C 2 is connected with the negative electrode of bidirectional triode thyristor STR; The elementary two ends of isolating transformer B also are connected with the 3rd resistance R 3 and the 3rd capacitor C 3 of mutual series connection.Described rectification circuit is made up of rectifier bridge ZD and the 4th capacitor C 4, wherein rectifier bridge ZD input is connected with the secondary of isolating transformer B, the cathode output end of rectifier bridge ZD is connected with the positive pole of the 4th capacitor C 4, and the cathode output end of rectifier bridge ZD is connected with the negative pole of the 4th capacitor C 4.Described overload-alarm circuit is made up of tongue tube GH and buzzer L, wherein the end of tongue tube GH is connected with the positive pole of the 4th capacitor C 4, the other end is connected with the negative pole of the 4th capacitor C 4 by buzzer L, be wound with coil on the tongue tube GH, the two ends of coil are connected between the positive pole and direct current output cathode end DC+ of the 4th capacitor C 4.The negative pole of the 4th capacitor C 4 connects direct current output negative pole end DC-.
Claims (4)
1. a student uses experimental power supply, form by regulating circuit, isolating transformer, rectification circuit and overload-alarm circuit, it is characterized in that: described regulating circuit is connected with the elementary of isolating transformer, and the secondary and rectification circuit of isolating transformer is connected with the overload-alarm circuit.
2. student according to claim 1 uses experimental power supply, it is characterized in that: described regulating circuit is by first electric capacity, second electric capacity, the 3rd electric capacity, first resistance, second resistance, the 3rd resistance, potentiometer, bidirectional triode thyristor and bidirectional diode are formed, wherein the anode of bidirectional triode thyristor is divided into three the tunnel, the first via is connected with the power supply phase line, the second the tunnel is connected with an end of first resistance, Third Road is connected with an end of second resistance, the elementary end of the negative electrode of bidirectional triode thyristor and isolating transformer is connected, the other end of first resistance is connected with the negative electrode of bidirectional triode thyristor by first electric capacity, the other end of second resistance is connected with an end of potentiometer, the other end of potentiometer is connected with an end of bidirectional diode and an end of second electric capacity respectively, the other end of bidirectional diode is connected with the control utmost point of bidirectional triode thyristor, and the other end of second electric capacity is connected with the negative electrode of bidirectional triode thyristor; The elementary two ends of isolating transformer also are connected with the 3rd resistance and the 3rd electric capacity of mutual series connection.
3. student according to claim 1 uses experimental power supply, it is characterized in that: described rectification circuit is made up of rectifier bridge and the 4th electric capacity, wherein the rectifier bridge input is connected with the secondary of isolating transformer, the cathode output end of rectifier bridge is connected with the positive pole of the 4th electric capacity, and the cathode output end of rectifier bridge is connected with the negative pole of the 4th electric capacity.
4. student according to claim 1 uses experimental power supply, it is characterized in that: described overload-alarm circuit is made up of tongue tube and buzzer, wherein an end of tongue tube is connected with the positive pole of the 4th electric capacity, the other end is connected by the negative pole of buzzer with the 4th electric capacity, be wound with coil on the tongue tube, the two ends of coil are connected between the positive pole and dc output end of the 4th electric capacity; The negative pole of the 4th electric capacity connects direct current output negative pole end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009202821290U CN201577029U (en) | 2009-12-03 | 2009-12-03 | Student used experiment power supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009202821290U CN201577029U (en) | 2009-12-03 | 2009-12-03 | Student used experiment power supply |
Publications (1)
Publication Number | Publication Date |
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CN201577029U true CN201577029U (en) | 2010-09-08 |
Family
ID=42696900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2009202821290U Expired - Fee Related CN201577029U (en) | 2009-12-03 | 2009-12-03 | Student used experiment power supply |
Country Status (1)
Country | Link |
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CN (1) | CN201577029U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104767403A (en) * | 2015-04-16 | 2015-07-08 | 成都互触科技有限公司 | Single-live line power supplier |
CN105790595B (en) * | 2016-05-13 | 2018-06-05 | 国网四川省电力公司电力科学研究院 | Detect voltage increase adjuster |
-
2009
- 2009-12-03 CN CN2009202821290U patent/CN201577029U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104767403A (en) * | 2015-04-16 | 2015-07-08 | 成都互触科技有限公司 | Single-live line power supplier |
CN105790595B (en) * | 2016-05-13 | 2018-06-05 | 国网四川省电力公司电力科学研究院 | Detect voltage increase adjuster |
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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: 20100908 Termination date: 20101203 |