CN216670988U - Novel inductive reactance and capacitive reactance demonstrator control circuit - Google Patents
Novel inductive reactance and capacitive reactance demonstrator control circuit Download PDFInfo
- Publication number
- CN216670988U CN216670988U CN202123256297.2U CN202123256297U CN216670988U CN 216670988 U CN216670988 U CN 216670988U CN 202123256297 U CN202123256297 U CN 202123256297U CN 216670988 U CN216670988 U CN 216670988U
- Authority
- CN
- China
- Prior art keywords
- circuit
- pin
- switch
- branch
- reactance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The utility model discloses a novel inductive reactance and capacitive reactance demonstrator control circuit, which comprises a power supply for outputting direct current, wherein the power supply is sequentially connected with a switch S1, a conversion circuit for converting direct current into high-frequency alternating current, and a rectification circuit for converting high-frequency alternating current into direct current, the output ends of the conversion circuit and the rectification circuit are respectively connected with a switching circuit for switching and outputting high-frequency alternating current or direct current, the output end of the switching circuit is respectively connected with an inductance demonstration branch, a capacitance demonstration branch and a resistance reference branch, and the conversion circuit for converting direct current into high-frequency alternating current is composed of a multi-harmonic oscillation circuit driving module, field effect tubes Q1 and Q2 and a high-frequency transformer T, so that alternating current with stable frequency is output when working at a certain frequency, the problem of flickering bulbs is solved, and the classroom teaching effect is improved, help students to understand the physical phenomenon of memory more easily.
Description
[ technical field ]
The utility model relates to a novel inductive reactance and capacitive reactance demonstrator control circuit.
[ background art ]
The inductive reactance and capacitive reactance demonstrator applied to high school physics teaching is mainly used for helping students to understand the 'direct current resistance and alternating current' function of an inductor, the 'direct current blocking and alternating current' function of a capacitor, the determining factors of the sizes of the inductive reactance and the capacitive reactance and the influence of the inductance and the capacitance on alternating current.
However, the current of the control circuit of the existing inductive reactance and capacitive reactance demonstrator changes the direction of the direct current through the hand-operated commutator to generate alternating current, and then the alternating current is supplied to the resistor, the capacitor and the inductor in the circuit for use, and the frequency of the alternating current in the circuit is changed by the rotation speed of the hand-operated commutator. Therefore, in the experimental operation process, the fact that the rotating frequency of the hand-operated commutator is not guaranteed to be consistent when the hand rotates is found, the brightness of small bulbs of three demonstration branches in the circuit is flickering, and the experimental effect of force is greatly influenced; meanwhile, the hand-cranking speed cannot be too fast due to the limitation of mechanical instruments, so that the influence of inductance and capacitance on an alternating current circuit under the action of high-frequency alternating current cannot be demonstrated.
[ contents of utility model ]
The utility model overcomes the defects of the technology and provides a novel inductive reactance and capacitive reactance demonstrator control circuit.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a novel inductive reactance and capacitive reactance demonstrator control circuit which characterized in that: the power supply is sequentially connected with a switch S1, a conversion circuit for converting direct current into high-frequency alternating current and a rectification circuit for converting the high-frequency alternating current into the direct current, the output end of the conversion circuit and the output end of the rectification circuit are respectively connected with a switching circuit for switching and outputting the high-frequency alternating current or the direct current, and the output end of the switching circuit is respectively connected with an inductance demonstration branch circuit, a capacitance demonstration branch circuit and a resistance reference branch circuit.
The novel inductive reactance and capacitive reactance demonstrator control circuit is characterized in that: the conversion circuit comprises a multi-resonant circuit driving module, wherein the positive input end of the multi-resonant circuit driving module is connected with the positive end of a power supply through a switch S1, the positive input end and the negative input end of the multi-resonant circuit driving module are connected with the negative end of the power supply, one output end of the multi-resonant circuit driving module is respectively connected with one end of a resistor R1 and the grid end of a field effect tube Q1, the drain end of the field effect tube Q1 is connected with a pin 1 of a high-frequency transformer T, the other end of the resistor R1 and the source end of the field effect tube Q1 are respectively connected with the negative end of the power supply, a pin 2 of the high-frequency transformer T is connected with the positive end of the power supply through a switch S1, the other output end of the multi-resonant circuit driving module is respectively connected with one end of a resistor R2 and a pin 3 of a field effect tube Q2, the drain end of the field effect tube Q2 is connected with the pin 3 of the high-frequency transformer T, the other end of the resistor R2 and the source end of the field effect tube Q2 are respectively connected with the negative end of the power supply, and a pin 4 and a pin 5 of the high-frequency transformer T are used as output ends of the conversion circuit.
The novel inductive reactance and capacitive reactance demonstrator control circuit is characterized in that: and the adjusting end of the multi-resonant circuit driving module is connected with an adjustable potentiometer Rp for adjusting the frequency of the output alternating current.
The novel inductive reactance and capacitive reactance demonstrator control circuit is characterized in that: the rectifier circuit is a rectifier bridge BD, the switching circuit is a double-pole double-throw switch S2, two input ends of the rectifier bridge BD are respectively connected with two output ends of the conversion circuit, a pin 1 of a switch S2 is connected with an anode output end of the rectifier bridge BD, a pin 2 of a switch S2 is connected with a cathode output end of the rectifier bridge BD, a pin 3 of a switch S2 is respectively connected with one end of an inductance demonstration branch, one end of a capacitance demonstration branch and one end of a resistance reference branch, a pin 4 of a switch S2 is respectively connected with the other end of the inductance demonstration branch, the other end of the capacitance demonstration branch and the other end of the resistance reference branch, a pin 5 of a switch S2 is connected with one output end of the conversion circuit, and a pin 6 of the switch S2 is connected with the other output end of the conversion circuit.
The novel inductive reactance and capacitive reactance demonstrator control circuit is characterized in that: the inductance demonstration branch circuit is a first bulb and an inductance L which are connected in series.
The novel inductive reactance and capacitive reactance demonstrator control circuit is characterized in that: the capacitance demonstration branch circuit is a second bulb and a capacitor C which are connected in series.
The novel inductive reactance and capacitive reactance demonstrator control circuit is characterized in that: the resistance reference branch is a third bulb and a resistor R3 which are connected in series.
The novel inductive reactance and capacitive reactance demonstrator control circuit is characterized in that: the power supply is a lithium battery.
The utility model has the beneficial effects that:
1. according to the utility model, the conversion circuit which consists of the multi-resonant circuit driving module, the field effect transistors Q1 and Q2 and the high-frequency transformer T and is used for converting direct current into high-frequency alternating current is arranged, so that alternating current with stable frequency is output when a certain frequency works, the problem that a hand-operated bulb is dim is solved, the classroom teaching effect is improved, and students are helped to understand the physical memory phenomenon more easily.
2. The multi-resonant circuit driving module is connected with an adjustable potentiometer Rp for adjusting the frequency of output alternating current, and the frequency of the output alternating current is adjusted through the adjustable potentiometer Rp, so that the problem that the influence of the inductance and the capacitance on an alternating current circuit cannot be demonstrated under the action of high-frequency alternating current is solved.
3. The lithium battery is used for supplying power, has large power supply capacity, can be circularly charged for use, and can work for a long time without charging.
[ description of the drawings ]
FIG. 1 is a circuit configuration diagram of the present invention.
[ detailed description of the utility model ]
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. In addition, the descriptions related to "preferred", "less preferred", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "preferred" or "less preferred" may explicitly or implicitly include at least one such feature.
As shown in fig. 1, a novel inductive reactance and capacitive reactance demonstrator control circuit comprises a power supply 1 outputting direct current, the power supply 1 is sequentially connected with a switch S1, a conversion circuit 2 for converting direct current into high-frequency alternating current, a rectification circuit 3 for converting high-frequency alternating current into direct current, an output end of the conversion circuit 2 and an output end of the rectification circuit 3 are respectively connected with a switching circuit 4 for switching and outputting high-frequency alternating current or direct current, an output end of the switching circuit 4 is respectively connected with an inductance demonstration branch 5, a capacitance demonstration branch 6 and a resistance reference branch 7. During the demonstration operation, switch S1 is closed, direct current that power supply 1 output is converted into high frequency alternating current after passing through converting circuit 2, high frequency alternating current is converted into direct current after passing through rectifier circuit 3, operating personnel accessible switching circuit 4 switches into the direct current that converting circuit 2 output high frequency alternating current or rectifier circuit 3 output to inductance demonstration branch 5, electric capacity demonstration branch 6 and resistance reference branch 7, demonstrate the physics phenomenon of inductance-reactance capacitance reactance through inductance demonstration branch 5, electric capacity demonstration branch 6 and resistance reference branch 7 afterwards.
As shown in fig. 1, the switching circuit 2 includes a multivibrator circuit driving module 21, a positive input terminal of the multivibrator circuit driving module 21 is connected to a positive terminal of the power supply 1 through a switch S1, positive and negative input terminals of the multivibrator circuit driving module 21 are connected to a negative terminal of the power supply 1, an output terminal of the multivibrator circuit driving module 21 is respectively connected to one terminal of a resistor R1 and a gate terminal of a field effect transistor Q1, a drain terminal of the field effect transistor Q1 is connected to a pin 1 of the high frequency transformer T, the other terminal of the resistor R1 and a source terminal of the field effect transistor Q1 are respectively connected to the negative terminal of the power supply 1, the pin 2 of the high frequency transformer T is connected to the positive terminal of the power supply 1 through a switch S1, the other output terminal of the multivibrator circuit driving module 21 is respectively connected to one terminal of the resistor R2 and the gate terminal of the field effect transistor Q2, the field effect transistor Q2 is connected to a pin 3 of the high frequency transformer T, the other end of the resistor R2 and the source end of the field effect transistor Q2 are respectively connected with the negative pole end of the power supply 1, and a pin 4 and a pin 5 of the high-frequency transformer T are used as the output end of the conversion circuit 2. In which a high frequency transformer T is provided with two 20T primary winding coils and one 10T secondary winding coil.
As shown in fig. 1, an adjustable potentiometer Rp for adjusting the frequency of the output ac power is connected to the adjustment end of the multivibrator circuit driver module 21.
As shown in fig. 1, the rectifier circuit 3 is a rectifier bridge BD, the switching circuit 4 is a double-pole double-throw switch S2, two input ends of the rectifier bridge BD are respectively connected to two output ends of the conversion circuit 2, a pin 1 of a switch S2 is connected to an anode output end of the rectifier bridge BD, a pin 2 of a switch S2 is connected to a cathode output end of the rectifier bridge BD, a pin 3 of a switch S2 is respectively connected to one end of an inductance demonstration branch 5, one end of a capacitance demonstration branch 6 and one end of a resistance reference branch 7, a pin 4 of a switch S2 is respectively connected to the other end of the inductance demonstration branch 5, the other end of the capacitance demonstration branch 6 and the other end of the resistance reference branch 7, a pin 5 of a switch S2 is connected to one output end of the conversion circuit 2, and a pin 6 of the switch S2 is connected to the other output end of the conversion circuit 2.
As shown in fig. 1, the power supply 1 is a three-section lithium battery, and outputs 12V dc power.
As shown in fig. 1, the inductance demonstration branch 5 is a first bulb and an inductance L connected in series; the capacitance demonstration branch circuit 6 is a second bulb and a capacitor C which are connected in series; the resistance reference branch 7 is a third bulb and a resistor R3 which are connected in series, and each branch is demonstrated by the brightness degree of the bulb of the branch.
The working principle is as follows: after the switch S1 is closed, 12V dc is output from the three lithium batteries, and is input to the multivibrator circuit driving module 21 through the switch S1, two output ends of the multivibrator circuit driving module 21 respectively output control signals to the field effect transistor Q1 and the field effect transistor Q2, so that the field effect transistor Q1 and the field effect transistor Q2 are alternately turned on, and thus 12V dc alternately flows through two primary winding coils of the high frequency transformer T, in this process, the magnetic core of the high frequency transformer T generates an alternately changing high frequency magnetic field, and a high frequency ac of about 6V is induced in a secondary winding coil of the high frequency transformer T, one path of the high frequency ac is connected to the switch S2, the other path of the high frequency ac is connected to the other connection end of the switch S2 through the rectifier bridge BD, and ac or dc is output to the inductance demonstration branch 5, the capacitance demonstration branch 6 and the resistance reference branch 7 by switching the connection end of the switch S2, the corresponding physical phenomenon is demonstrated through the brightness degree of the bulbs in each branch, and the frequency of the output alternating current can be adjusted by adjusting the adjustable potentiometer Rp.
The demonstration result is as follows: when the switch S2 is switched to DC, the second bulb connected in series to the capacitor C is not on, and the first bulb connected in series to the inductor L and the third bulb connected in series to the resistor R3 are both on. Therefore, the capacitor has the function of isolating direct current, and the inductor has the function of conducting direct current; when the switch S2 is switched to the ac range, the second bulb connected in series with the capacitor C emits light, and the brightness of the second bulb gradually becomes brighter as the frequency knob is turned up, which means that the capacitor has an "ac" function, and the higher the frequency of the ac power is, the smaller the blocking effect of the capacitor on the current is, that is, the higher the frequency of the ac power is, the smaller the capacitive reactance of the capacitor is. On the other hand, when observing the first bulb connected in series with the inductor L, the brightness of the first bulb is darker than that of the dc range, which means that the inductor has the function of "blocking ac", and the first bulb becomes darker as the frequency is increased. It is stated that the higher the frequency, the greater the resistance of the inductor to the alternating current, i.e. the greater the inductive reactance of the inductor. The third lamp group connected in series with the resistor R3 is a comparison group, and has a blocking effect in both AC and DC gear, and in an AC circuit, the frequency is adjusted up and down, and the brightness of the small lamp bulb is not changed.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical scope of the present invention, which can be directly or indirectly applied to other related technical fields without departing from the spirit of the present invention, are intended to be included in the scope of the present invention.
Claims (8)
1. The utility model provides a novel inductive reactance and capacitive reactance demonstrator control circuit which characterized in that: the device comprises a power supply (1) for outputting direct current, wherein the power supply (1) is sequentially connected with a switch S1, a conversion circuit (2) for converting the direct current into high-frequency alternating current, and a rectification circuit (3) for converting the high-frequency alternating current into the direct current, wherein the output end of the conversion circuit (2) and the output end of the rectification circuit (3) are respectively connected with a switching circuit (4) for switching and outputting the high-frequency alternating current or the direct current, and the output end of the switching circuit (4) is respectively connected with an inductance demonstration branch circuit (5), a capacitance demonstration branch circuit (6) and a resistance reference branch circuit (7).
2. The novel inductive reactance and capacitive reactance demonstrator control circuit as claimed in claim 1, wherein: the conversion circuit (2) comprises a multi-resonant circuit driving module (21), wherein the positive input end of the multi-resonant circuit driving module (21) is connected with the positive end of a power supply (1) through a switch S1, the positive input end and the negative input end of the multi-resonant circuit driving module (21) are connected with the negative end of the power supply (1), one output end of the multi-resonant circuit driving module (21) is respectively connected with one end of a resistor R1 and the grid end of a field effect tube Q1, the drain end of the field effect tube Q1 is connected with a pin 1 of a high-frequency transformer T, the other end of the resistor R1 and the grid end of a field effect tube Q1 are respectively connected with the negative end of the power supply (1), a pin 2 of the high-frequency transformer T is connected with the positive end of the power supply (1) through a switch S1, the other output end of the multi-resonant circuit driving module (21) is respectively connected with one end of a resistor R2 and the grid end of a field effect tube Q2, the drain end of the field effect tube Q2 is connected with a pin 3 of the high-frequency transformer T, the other end of the resistor R2 and the source end of the field effect transistor Q2 are respectively connected with the negative electrode end of the power supply (1), and a pin 4 and a pin 5 of the high-frequency transformer T are used as the output end of the conversion circuit (2).
3. The novel inductive reactance and capacitive reactance demonstrator control circuit as claimed in claim 2, wherein: the adjusting end of the multi-resonant circuit driving module (21) is connected with an adjustable potentiometer Rp for adjusting the frequency of the output alternating current.
4. The novel inductive reactance and capacitive reactance demonstrator control circuit as claimed in claim 1, wherein: the rectifier circuit (3) is a rectifier bridge BD, the switching circuit (4) is a double-pole double-throw switch S2, two input ends of the rectifier bridge BD are respectively connected with two output ends of the conversion circuit (2), a pin 1 of a switch S2 is connected with an anode output end of the rectifier bridge BD, a pin 2 of a switch S2 is connected with a cathode output end of the rectifier bridge BD, a pin 3 of a switch S2 is respectively connected with one end of an inductance demonstration branch (5), one end of a capacitance demonstration branch (6) and one end of a resistance reference branch (7), a pin 4 of a switch S2 is respectively connected with the other end of the inductance demonstration branch (5), the other end of the capacitance demonstration branch (6) and the other end of the resistance reference branch (7), a pin 5 of a switch S2 is connected with one output end of the conversion circuit (2), and a pin 6 of the switch S2 is connected with the other output end of the conversion circuit (2).
5. The novel inductive reactance and capacitive reactance demonstrator control circuit according to claim 1 or 4, wherein: the inductance demonstration branch circuit (5) is a first bulb and an inductance L which are connected in series.
6. The novel inductive reactance and capacitive reactance demonstration device control circuit according to claim 1 or 4, characterized in that: and the capacitance demonstration branch circuit (6) is a second bulb and a capacitor C which are connected in series.
7. The novel inductive reactance and capacitive reactance demonstration device control circuit according to claim 1 or 4, characterized in that: the resistance reference branch (7) is a third bulb and a resistor R3 which are connected in series.
8. The novel inductive reactance and capacitive reactance demonstrator control circuit as claimed in claim 1, wherein: the power supply (1) is a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123256297.2U CN216670988U (en) | 2021-12-21 | 2021-12-21 | Novel inductive reactance and capacitive reactance demonstrator control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123256297.2U CN216670988U (en) | 2021-12-21 | 2021-12-21 | Novel inductive reactance and capacitive reactance demonstrator control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216670988U true CN216670988U (en) | 2022-06-03 |
Family
ID=81793655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123256297.2U Active CN216670988U (en) | 2021-12-21 | 2021-12-21 | Novel inductive reactance and capacitive reactance demonstrator control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216670988U (en) |
-
2021
- 2021-12-21 CN CN202123256297.2U patent/CN216670988U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106292820B (en) | A kind of ripple current generation circuit | |
| CN207443185U (en) | A kind of compatible dial-up adjusts the LED drive circuit of electric current | |
| CN201393172Y (en) | X-ray machine high-power energy storage device | |
| CN216670988U (en) | Novel inductive reactance and capacitive reactance demonstrator control circuit | |
| CN113009370B (en) | Low-energy-consumption power battery cycle life testing system and method | |
| CN104868533B (en) | The lithium battery power supply method and circuit of high-frequency X-ray | |
| CN107478730A (en) | A kind of inductance type nonmetal ultrasonic emission system | |
| CN108365757B (en) | Constant-current device | |
| CN101976941B (en) | Bidirectional thyristor trigger circuit and method | |
| CN205543671U (en) | Soft switch laser drive circuit | |
| CN103187778A (en) | Charging circuit and charger | |
| CN208299693U (en) | A kind of Switching Power Supply of full bridge structure | |
| CN202373218U (en) | Combined-type multifunctional circuit demonstration device | |
| CN204680285U (en) | A kind of demonstration instrument for teaching probing into capacitor charging and discharging | |
| CN104967295A (en) | Medium and small power voltage booster capable of adjusting positive and negative high voltage output | |
| CN210835129U (en) | Novel ultralow frequency high voltage generator | |
| CN203038543U (en) | A LC electromagnetic oscillation demonstrating instrument | |
| CN203851050U (en) | Electricity-consuming appliance and power source device | |
| CN204791714U (en) | Lenz law presentation device | |
| CN104134384A (en) | Capacitor inductance feature demonstrator | |
| CN211859956U (en) | Half-bridge LLC constant power circuit of adjusting luminance | |
| CN209373081U (en) | A kind of LED device tester | |
| CN103150950A (en) | LC electromagnetic oscillation demonstration instrument | |
| CN217278871U (en) | Magnetic flux density test circuit of magnetic switch | |
| CN104779653A (en) | Charging indicating circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |