CN103559824A - Physical standard battery potential difference meter experiment instrument and method for measuring potential difference by means of the experiment instrument - Google Patents
Physical standard battery potential difference meter experiment instrument and method for measuring potential difference by means of the experiment instrument Download PDFInfo
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- CN103559824A CN103559824A CN201310601616.XA CN201310601616A CN103559824A CN 103559824 A CN103559824 A CN 103559824A CN 201310601616 A CN201310601616 A CN 201310601616A CN 103559824 A CN103559824 A CN 103559824A
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Abstract
The invention discloses a physical standard battery potential difference meter experiment instrument and a method for measuring potential difference by means of the experiment instrument, and relates to the potential difference meter experiment instrument and the method for measuring the potential difference by means of the experiment instrument. The problems that due to the facts that an existing chemical-type standard battery is easily influenced by external environment, and the stability of the electro-dynamic potential value output by the chemical battery is poor, the potential difference meter experiment instrument is poor in measuring accuracy are solved. The positive electrode of a direct-current voltage-stabilized power source is connected with the anode of a light-emitting diode and one end of an RP at the same time, the cathode of the light-emitting diode is connected with the negative electrode of the direct-current voltage-stabilized power source and one end of a resistor at the same time, the other end of the resistor is connected with the other end of the RP, the positive electric signal input end of a potential difference meter is connected with the positive electrode of the direct-current voltage-stabilized power source, and the negative electric signal input end of the potential difference meter is connected with the movable end of the RP. The experiment instrument is utilized for measuring the potential difference of a device to be measured, the movable end of the RP is adjusted, and the measurement of the potential difference of the device to be measured is achieved. The physical standard battery potential difference meter experiment instrument is applicable to measuring the potential difference.
Description
Technical field
The present invention relates to a kind of potential meter experiment instrument and utilize potential meter experiment instrument to measure the method for potential difference (PD).
Background technology
Potential meter experiment instrument standard cell used is generally chemical cell, temperature influence is larger, particularly the variation of indoor environment temperature can cause the variation of chemical standard battery output electromotive force, therefore before each use, must, according to after the rule calibration chemical standard battery of temperature variation, could use; And chemical standard battery can not tilt, more can not rock and be inverted, otherwise can make the chemical substance in glass tube blend together one, thereby affect electromotive force value and stability, even can not use; In addition, chemical standard battery is also subject to illumination effect larger, because the depolarizing agent mereurous sulfate of standard cell is a kind of photoactive substance, is subject to can go bad after illumination, will make polarization and lag behind all to become serious.Therefore, potential meter experiment can increase a lot of points for attention for chemical cell feature, and student is careless slightly will affect output electromotive force value and stability, causes measuring accuracy inaccurate, even damages chemical standard battery.
Summary of the invention
The present invention is subject to the impact of external environment in order to solve existing chemical formula standard cell, the poor stability of the electromotive force value of output, cause the poor problem of potential meter experiment instrument measuring accuracy, proposed the potential meter experiment instrument of physical type standard cell and utilized this electricity experiment instrument to measure the method for potential difference (PD).
The potential meter experiment instrument of physical type standard cell of the present invention, this experiment instrument comprises D.C. regulated power supply E, light emitting diode D, resistance R and potentiometer RP and potential difference meter A;
The anodal anode of connecting luminous diode D simultaneously of D.C. regulated power supply E and one end of potentiometer RP, the negative electrode of light emitting diode D connects the negative pole of D.C. regulated power supply E and one end of resistance R simultaneously, and the other end of resistance R connects the other end of potentiometer RP; The positive electric signal input end of potential difference meter A connects the positive pole of D.C. regulated power supply E, and the negative electricity signal input part of potential difference meter A connects the movable end of potentiometer RP.
The method of utilizing the potential meter experiment instrument measurement potential difference (PD) of above-mentioned physical type standard cell, the concrete steps of the method are:
First the positive electrical signal of device under test is connected to the positive electric signal input end of potential difference meter A, the negative electricity signal input part of potential difference meter A connects device under test negative electricity signal output part;
Then reconcile the movable end of potentiometer RP, make the movable end of potentiometer RP and the stiff end that is connected with potential meter experiment instrument between an output millivolt level electromotive force;
According to the movable end of the potential difference (PD) regulator potentiometer RP of device under test, to the range that is applicable to the potential difference (PD) of device under test, realize the measurement to device under test potential difference (PD).
The replacement device of potential meter experiment instrument chemical standard battery of the present invention is to utilize the method for physics to realize, and is not subject to the such environmental effects such as environment temperature, illumination, need not be according to indoor temperature change generated in case calibration criterion battery before each use.Because of carelessness standard cell is inverted, after rocking, still can stable output electromotive force.The standard cell replacement device of invention can meet the demand of potential meter experiment instrument measurement range 0-170mv, and size is adjustable, good stability, and compare with existing chemical formula standard cell, stability has improved 10% on year-on-year basis, effectively raise potential meter experiment instrument measuring accuracy, and adopt the potential meter experiment instrument measuring accuracy of device of the present invention to compare with adopting the potential meter experiment instrument of standard cell, measuring accuracy has improved 20% on year-on-year basis on year-on-year basis.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the potential meter experiment instrument of physical type standard cell of the present invention.
Embodiment
Embodiment one, in conjunction with Fig. 1, present embodiment is described, the potential meter experiment instrument of physical type standard cell described in present embodiment, this experiment instrument comprises D.C. regulated power supply E, light emitting diode D, resistance R and potentiometer RP and potential difference meter A;
The anodal anode of connecting luminous diode D simultaneously of D.C. regulated power supply E and one end of potentiometer RP, the negative electrode of light emitting diode D connects the negative pole of D.C. regulated power supply E and one end of resistance R simultaneously, and the other end of resistance R connects the other end of potentiometer RP; The positive electric signal input end of potential difference meter A connects the positive pole of D.C. regulated power supply E, and the negative electricity signal input part of potential difference meter A connects the movable end of potentiometer RP.
The potential meter experiment instrument of physical type standard cell of the present invention relates to Experiment of College Physics instrument; Potential meter experiment instrument particularly, potential meter experiment instrument is for accurately measuring the specialized equipment of cell emf or potential difference (PD), test needed standard cell requirement and can meet the demand of potential meter experiment instrument measurement range 0-170mv, and good stability, in indoor temperature, during illumination variation, standard cell output electromotive force can steady operation, before each use, need not become calibration criterion battery according to temperature, just can directly measure use; Standard cell is inverted, after rocking, still can stable output electromotive force, and also standard cell output electromotive force size itself is adjustable.
Current standard cell is a kind of chemical cell, temperature influence is larger, the variation of environment temperature can cause that chemical standard cell emf changes, therefore must be according to the rule calibration of temperature variation before each use, and chemical standard battery could be used, and, chemical standard battery can not tilt, and more can not rock and be inverted, otherwise can make the chemical substance in glass tube blend together one, thereby impact output electromotive force value and stability, even can not be used.Existing chemical standard battery is subject to illumination effect larger, because the depolarizing agent mereurous sulfate of standard cell is a kind of photoactive substance, is subject to can go bad after illumination, will make polarization and lag behind all to become serious; Chemical standard battery output electromotive force size criteria battery itself is unadjustable, the replacement device of potential meter experiment instrument chemical standard battery of the present invention is to utilize the method for physics to realize, be not subject to the such environmental effects such as environment temperature, illumination, need not be according to indoor temperature change generated in case calibration criterion battery before each use.Because of carelessness standard cell is inverted, after rocking, still can stable output electromotive force.
Standard cell replacement device of the present invention can meet the demand of potential meter experiment instrument measurement range 0-170mv, and size is adjustable, good stability, greatly improve the selectivity of student's conventional efficient and teacher's contrived experiment, and the replacement device of this potential meter experiment instrument standard cell also has making simply, energy-conserving and environment-protective, the features such as economy and durability.
Embodiment two, present embodiment are to the further illustrating of the potential meter experiment instrument of the physical type standard cell described in embodiment one, and D.C. regulated power supply E adopts the D.C. regulated power supply that voltage is 3V.
Embodiment three, present embodiment are to the further illustrating of the potential meter experiment instrument of the physical type standard cell described in embodiment one, and light emitting diode D adopts the light emitting diode that power is 1W.
Embodiment four, present embodiment are that the measurement range of potential difference meter A is 0mv-170mv to the further illustrating of the potential meter experiment instrument of the physical type standard cell described in embodiment one.
Embodiment five, utilize the potential meter experiment instrument of the physical type standard cell described in embodiment one to measure the method for potential difference (PD), the concrete steps of the method are:
First the positive electrical signal of device under test is connected to the positive electric signal input end of potential difference meter A, the negative electricity signal input part of potential difference meter A connects device under test negative electricity signal output part;
Then reconcile the movable end of potentiometer RP, make the movable end of potentiometer RP and the stiff end that is connected with potential meter experiment instrument between an output millivolt level electromotive force;
According to the movable end of the potential difference (PD) regulator potentiometer RP of device under test, to the range that is applicable to the potential difference (PD) of device under test, realize the measurement to device under test potential difference (PD).
Advantage of the present invention:
1, the replacement device of standard cell of the present invention utilizes physical method to realize.
2, the potential meter experiment instrument of physical type standard cell of the present invention output electromotive force size is adjustable continuously.
3, the potential meter experiment instrument of physical type standard cell of the present invention can meet the demand at potential meter experiment instrument measurement range 0-170mv.
4, the potential meter experiment instrument of physical type standard cell of the present invention is not subject to the such environmental effects such as environment temperature, illumination, need not be according to indoor temperature change generated in case calibration criterion battery before each use.
5, the potential meter experiment instrument of physical type standard cell of the present invention is easy to use, make simple, energy-conserving and environment-protective, with low cost, stablize durablely, experiment effect is good.
6, the potential meter experiment instrument of physical type standard cell of the present invention, being inverted, after rocking, does not affect use, still can stable output electromotive force.
7, the potential meter experiment instrument of physical type standard cell of the present invention also has making simply, energy-conserving and environment-protective, the features such as economy and durability.
Claims (5)
1. the potential meter experiment instrument of physical type standard cell, is characterized in that, this experiment instrument comprises D.C. regulated power supply (E), light emitting diode (D), resistance R and potentiometer (RP) and potential difference meter (A);
The anodal anode of connecting luminous diode (D) simultaneously of D.C. regulated power supply (E) and one end of potentiometer (RP), the negative electrode of light emitting diode (D) connects the negative pole of D.C. regulated power supply (E) and one end of resistance R simultaneously, and the other end of resistance R connects the other end of potentiometer (RP); The positive electric signal input end of potential difference meter (A) connects the positive pole of D.C. regulated power supply (E), and the negative electricity signal input part of potential difference meter (A) connects the movable end of potentiometer (RP).
2. the potential meter experiment instrument of physical type standard cell according to claim 1, is characterized in that, D.C. regulated power supply (E) adopts the D.C. regulated power supply that voltage is 3V.
3. the potential meter experiment instrument of physical type standard cell according to claim 1, is characterized in that, light emitting diode (D) adopts the light emitting diode that power is 1W.
4. the potential meter experiment instrument of physical type standard cell according to claim 1, is characterized in that, the measurement range of potential difference meter (A) is 0mv-170mv.
5. utilize the potential meter experiment instrument of the physical type standard cell described in claim 1 to measure the method for potential difference (PD), it is characterized in that, the concrete steps of the method are:
First the positive electrical signal of device under test is connected to the positive electric signal input end of potential difference meter (A), the negative electricity signal input part of potential difference meter (A) connects device under test negative electricity signal output part;
Then reconcile the movable end of potentiometer (RP), make the movable end of potentiometer (RP) and the stiff end that is connected with potential meter experiment instrument between an output millivolt level electromotive force;
According to the movable end of the potential difference (PD) regulator potentiometer (RP) of device under test, to the range that is applicable to the potential difference (PD) of device under test, realize the measurement to device under test potential difference (PD).
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| CN201310601616.XA CN103559824A (en) | 2013-11-25 | 2013-11-25 | Physical standard battery potential difference meter experiment instrument and method for measuring potential difference by means of the experiment instrument |
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| CN201310601616.XA CN103559824A (en) | 2013-11-25 | 2013-11-25 | Physical standard battery potential difference meter experiment instrument and method for measuring potential difference by means of the experiment instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903501A (en) * | 2014-04-18 | 2014-07-02 | 汪润桢 | Metal electrochemical corrosion principle demonstration device |
| CN106683545A (en) * | 2015-11-10 | 2017-05-17 | 重庆尊来科技有限责任公司 | Display teaching demonstration instrument capable of testing positive and negative electricity |
| CN106683546A (en) * | 2015-11-10 | 2017-05-17 | 重庆尊来科技有限责任公司 | Positive and negative thirst for knowledge teaching demonstration instrument |
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| CN2380924Y (en) * | 1999-06-17 | 2000-05-31 | 骆乃光 | Portable dc. voltmeter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2380924Y (en) * | 1999-06-17 | 2000-05-31 | 骆乃光 | Portable dc. voltmeter |
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| 全秀娥等: "干电池供电式电子标准电池的涉及", 《物理与工程》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903501A (en) * | 2014-04-18 | 2014-07-02 | 汪润桢 | Metal electrochemical corrosion principle demonstration device |
| CN106683545A (en) * | 2015-11-10 | 2017-05-17 | 重庆尊来科技有限责任公司 | Display teaching demonstration instrument capable of testing positive and negative electricity |
| CN106683546A (en) * | 2015-11-10 | 2017-05-17 | 重庆尊来科技有限责任公司 | Positive and negative thirst for knowledge teaching demonstration instrument |
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Application publication date: 20140205 |