Capacitor charging and discharging demonstration device

Abstract

The utility model relates to the technical field of capacitor charging and discharging demonstration, in particular to a capacitor charging and discharging demonstration device, which comprises a demonstration mechanism, a power supply E, a potentiometer Rp, a single-pole double-throw switch K, an ampere meter, a voltmeter, a capacitor C1, a capacitor C2, a switch K1, a switch K2, a switch K3 and leads. The power supply E, the potentiometer Rp, a first channel of the single-pole double-throw switch K, the ampere meter and the capacitor C1 are connected in series to form a first charging loop; according to the utility model, through the arrangement of the first charging loop, the second charging loop, the first discharging loop and the second discharging loop, the difference of the charging and discharging processes of the capacitors is demonstrated, and the capacitor C1 and the capacitor C2 are connected in parallel, so that the effect of changing the capacitance is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor charging and discharging demonstration, in particular to a capacitor charging and discharging demonstration device. Background Art

[0002] Existing electrical demonstration devices generally only use a single potentiometer to drive the change of resistance to achieve demonstrations of different current and voltage conditions. For capacitors, an electronic component, it is necessary to demonstrate its charging and discharging characteristics differently. At the same time, capacitors should be connected in parallel to explore the differences in voltage and current during charging and discharging under the parallel relationship. At the same time, existing demonstration devices are not easy to disassemble and wire bundling operations are impossible. Only using insulating tape to tie is not only inconvenient to adjust the placement of components to adapt to different tests, but the tying effect is also not reliable and is prone to breakage after long-term use.

[0003] The Chinese patent document with the announcement number CN208938460U discloses an adjustable parallel plate capacitor charge discharge demonstration device, in which a capacitor adjustment device is arranged on the lower plate of the flat plate capacitor, and the capacitor adjustment device is used to quantitatively adjust the capacitance of the flat plate capacitor; however, it does not disclose how to realize the easy disassembly function of the demonstration device and the wire bundling function of the wires;

[0004] The Chinese patent document with the announcement number CN220974946U discloses a magnetic secondary school electrical experiment box with a small footprint. During the experiment, the experiment box can be installed vertically on the edge of the desktop, freeing up more experimental space, and various experimental instruments can be limited on the desktop by magnetic attraction to avoid poor wiring and falling. However, it does not disclose how to adapt it to the demonstration of the charging and discharging process of capacitors, and how to explore the differences in voltage and current during the charging and discharging process under the parallel relationship;

[0005] In summary, how to design a capacitor charging and discharging demonstration device to demonstrate the difference between the charging and discharging characteristics of the capacitor as an electronic component, and at the same time explore the differences in voltage and current during the charging and discharging process under the parallel relationship of capacitors, facilitate disassembly and adjustment, and realize the wiring operation of the wires has become a problem to be solved. Utility Model Content

[0006] The purpose of the utility model is to provide a capacitor charging and discharging demonstration device to solve the existing problem of how to design a capacitor charging and discharging demonstration device, and to demonstrate the difference between the charging and discharging characteristics of the capacitor as an electronic component. At the same time, it can also explore the differences in voltage and current during the charging and discharging process under the parallel relationship of capacitors, facilitate disassembly and adjustment, and realize the wiring operation problem of the wires.

[0007] In order to achieve the above objectives, the following technical solutions are provided:

[0008] A capacitor charging and discharging demonstration device, comprising: a display mechanism, a power source E, a potentiometer Rp, a single-pole double-throw switch K, an ammeter, a voltmeter, a capacitor C1, a capacitor C2, a switch K1, a switch K2, a switch K3 and a wire;

[0009] The power source E, the potentiometer Rp, the first channel of the single-pole double-throw switch K, the ammeter and the capacitor C1 are connected in series to form a first charging circuit;

[0010] The power source E, the potentiometer Rp, the first channel of the single-pole double-throw switch K, the ammeter, the switch K3 and the capacitor C2 are connected in series to form a second charging circuit;

[0011] The capacitor C1, the potentiometer Rp, the second channel of the single-pole double-throw switch K and the ammeter are connected in series to form a first discharge circuit;

[0012] The capacitor C2, the potentiometer Rp, the second channel of the single-pole double-throw switch K and the ammeter are connected in series to form a second discharge circuit;

[0013] The capacitor C1 is connected in parallel with the capacitor C2, the voltmeter and the switch K1 form a voltage measurement branch, and the voltmeter is connected in parallel with the capacitor C1 and the capacitor C2;

[0014] The ammeter is connected in parallel with the switch K2, and the ammeter is connected in series with at least one of the capacitor C1 and the capacitor C2;

[0015] The display mechanism comprises an elastic component and a fixing component fixedly connected thereto. When the fixing component abuts against the wire, force is applied to the wire to limit the position of the wire.

[0016] Preferably, the first charging circuit, the second charging circuit, the first discharging circuit, and the second discharging circuit are all electrically connected via wires and are arranged on the display mechanism.

[0017] Preferably, the display mechanism includes a front panel, a panel frame, a rear panel, a fixing unit and a limiting unit, the front panel is arranged in the panel frame and fixedly connected thereto, the rear panel is detachably connected to the panel frame through the fixing unit, a cavity is formed between the front panel and the rear panel, and the first charging circuit, the second charging circuit, the first discharging circuit and the second discharging circuit are all arranged in the cavity.

[0018] Preferably, the fixing unit includes a fixing plate, a tension spring and a fixing pin. The same blind holes are provided at the four corners of the plate frame and the four corners of the rear panel. The fixing plate as a whole is a "V"-shaped structure, and its two ends are provided with plug posts protruding outward, and the plug posts match the blind holes. The fixing pin passes through the fixing plate, and its pin rod portion is limited to the plate frame, and the pin head portion is limited to the middle part of the fixing plate. The two ends of the tension spring are respectively fixed to the plate frame and the pin rod portion of the fixing pin.

[0019] Preferably, the limit unit includes a limit seat, a limit plate, a compression spring, and an insulating sleeve. The limit seat and the compression spring are both fixed on the side wall of the plate frame. The limit plate is arranged through the limit seat. The limit plate extends outward along its end surface to form a connecting portion. The connecting portion and the limit seat are both provided with the same strip hole. The connecting portion is bolted and / or not connected to the limit seat. One end of the compression spring away from the plate frame abuts against the limit plate. The side wall of the limit plate also extends outward to form an extension portion. The wire is arranged along the plate frame. The extension portion is bent in the direction of the wire, and an insulating sleeve is also sleeved on the extension portion.

[0020] Preferably, the front panel is a light-transmitting acrylic plate, and the capacitor charging and discharging demonstration device further includes an LED light bar, which is arranged in the cavity.

[0021] The beneficial effects of the utility model are:

[0022] 1. The utility model demonstrates the difference between the charging and discharging processes of the capacitor by setting the first charging circuit, the second charging circuit, the first discharging circuit, and the second discharging circuit. At the same time, the effect of changing the capacitance size can be achieved by connecting two capacitors C1 and C2 in parallel;

[0023] 2. The utility model sets a limit unit. On the one hand, the elastic force of the spring can be used to drive the wire to be pressed against the wire, thereby achieving a wire bundling effect. On the other hand, when the wire needs a certain placement space, the limit unit can be fixed to the plate frame by tightening the bolts to avoid excessive extrusion and damage of the wire.

[0024] 3. The utility model provides a fixing unit. When the rear panel needs to be removed to adjust the circuit, the user only needs to vertically pull the four fixing plates in sequence to remove the plug-in posts from the blind holes. The rear panel is then rotated 90 degrees around the fixing pins so that the plug-in posts on the rear panel are inserted into the blind holes on the frame. At this time, the rear panel is not constrained and can be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the circuit principle diagram of the utility model;

[0026] Figure 2 It is a schematic diagram of the LED light strip layout;

[0027] Figure 3 It is a structural schematic diagram of the utility model;

[0028] Figure 4 for Figure 3 A magnified schematic diagram of the structure at center A;

[0029] Figure 5 This is a schematic diagram of the partial structure of the utility model after removing the rear panel and the fixing plate;

[0030] Figure 6 It is a structural schematic diagram of the limit unit;

[0031] Figure 7 is a structural schematic diagram of a fixed plate;

[0032] In the figure:

[0033] 101-board frame, 102-rear panel, 103-blind hole, 104-LED light strip;

[0034] 201-power supply E, 202-potentiometer Rp, 203-single-pole double-throw switch K, 204-ammeter, 205-voltmeter, 206-capacitor C1, 207-capacitor C2, 208-switch K1, 209-switch K2, 210-switch K3, 211-wire;

[0035] 301-fixed plate, 302-tension spring, 303-fixed pin, 304-insertion column;

[0036] 401-limiting seat, 402-limiting plate, 403-compression spring, 404-insulating sleeve, 405-connecting part, 406-strip hole, 407-extension part. DETAILED DESCRIPTION

[0037] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions of the schematic diagrams in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] like Figure 1-7 As shown,

[0039] A capacitor charging and discharging demonstration device, comprising: a display mechanism, a power source E 201, a potentiometer Rp 202, a single-pole double-throw switch K 203, an ammeter 204, a voltmeter 205, a capacitor C1 206, a capacitor C2 207, a switch K1 208, a switch K2 209, a switch K3 210 and a wire 211;

[0040] The power source E 201, the potentiometer Rp 202, the first channel of the single-pole double-throw switch K 203, the ammeter 204 and the capacitor C1 206 are connected in series to form a first charging loop;

[0041] The power source E 201, the potentiometer Rp 202, the first channel of the single-pole double-throw switch K 203, the ammeter 204, the switch K3 210 and the capacitor C2 207 are connected in series to form a second charging circuit;

[0042] The capacitor C1 206, the potentiometer Rp 202, the second channel of the single-pole double-throw switch K 203 and the ammeter 204 are connected in series to form a first discharge loop;

[0043] The capacitor C2 207, the potentiometer Rp 202, the second channel of the single-pole double-throw switch K 203 and the ammeter 204 are connected in series to form a second discharge loop;

[0044] Capacitor C1 206 and capacitor C2 207 are connected in parallel, voltmeter 205 and switch K1 208 form a voltage measurement branch, and voltmeter 205 and capacitor C1 206 and capacitor C2 207 are all connected in parallel;

[0045] The ammeter 204 is connected in parallel with the switch K2 209, and the ammeter 204 is connected in series with at least one of the capacitor C1 206 and the capacitor C2 207;

[0046] The display mechanism includes an elastic component and a fixing component fixedly connected thereto. When the fixing component abuts against the wire 211, force is applied to the wire 211 to limit the position of the wire 211.

[0047] By setting the limiting unit, on the one hand, the elastic force of the spring can be used to drive the wire 211 to be pressed against the wire, thereby achieving a wire bundling effect; on the other hand, when the wire 211 needs a certain placement space, the limiting unit can be fixed to the plate frame 101 by tightening the bolts to prevent the wire 211 from being over-extruded and damaged;

[0048] In some embodiments, the first charging circuit, the second charging circuit, the first discharging circuit, and the second discharging circuit are all electrically connected via a wire 211 and are disposed on the display mechanism;

[0049] By setting up the first charging circuit, the second charging circuit, the first discharging circuit, and the second discharging circuit, the difference between the charging and discharging processes of the capacitor is demonstrated. At the same time, the effect of changing the capacitance size can be achieved by connecting two capacitors C1 and C2 in parallel.

[0050] In some embodiments, the display mechanism includes a front panel, a frame 101, a rear panel 102, a fixing unit, and a limiting unit. The front panel is disposed in the frame 101 and fixedly connected thereto. The rear panel 102 is detachably connected to the frame 101 through the fixing unit. A cavity is formed between the front panel and the rear panel 102. The first charging circuit, the second charging circuit, the first discharging circuit, and the second discharging circuit are all disposed in the cavity.

[0051] In some embodiments, the fixing unit includes a fixing plate 301, a tension spring 302 and a fixing pin 303. The four corners of the plate frame 101 and the four corners of the rear panel 102 are provided with the same blind holes 103. The fixing plate 301 is a "V"-shaped structure as a whole, and its two ends are provided with plug posts 304 protruding outward, and the plug posts 304 match the blind holes 103. The fixing pin 303 passes through the fixing plate 301, and its pin rod portion is limited to the plate frame 101, and the pin head portion is limited to the middle of the fixing plate 301. The two ends of the tension spring 302 are respectively fixed to the plate frame 101 and the pin rod portion of the fixing pin 303;

[0052] By setting the fixing unit, when the rear panel 102 needs to be disassembled to adjust the circuit, it is only necessary to vertically pull the four fixing plates 301 in sequence to disengage the plug 304 from the blind hole 103, and then rotate the rear panel 102 90 degrees around the fixing pin 303 so that the plug 304 inserted on the rear panel 102 is inserted into the blind hole 103 on the frame 101. At this time, the rear panel 102 is not constrained and the disassembly is completed;

[0053] In some embodiments, the limiting unit includes a limiting seat 401, a limiting plate 402, a compression spring 403, and an insulating sleeve 404. The limiting seat 401 and the compression spring 403 are both fixed on the side wall of the plate frame 101. The limiting plate 402 is arranged through the limiting seat 401. The limiting plate 402 extends outward along its end surface to form a connecting portion 405. The connecting portion 405 and the limiting seat 401 are both provided with the same strip hole 406. The connecting portion 405 is bolted and / or not connected to the limiting seat 401. One end of the compression spring 403 away from the plate frame 101 abuts against the limiting plate 402. The side wall of the limiting plate 402 also extends outward to form an extension portion 407. The wire 211 is arranged along the plate frame 101, and the extension portion 407 is bent in the direction of the wire 211. The extension portion 407 is also sleeved with an insulating sleeve 404.

[0054] In some embodiments, the front panel is a light-transmitting acrylic panel, and the capacitor charging and discharging demonstration device further includes an LED light bar 104, which is arranged in the cavity.

Claims

1. Capacitor charging and discharging demonstration device, characterized in that: include: Display mechanism, power source E, potentiometer Rp, single-pole double-throw switch K, ammeter, voltmeter, capacitor C1, capacitor C2, switch K1, switch K2, switch K3 and wires; The power source E, the potentiometer Rp, the first channel of the single-pole double-throw switch K, the ammeter and the capacitor C1 are connected in series to form a first charging circuit; The power source E, the potentiometer Rp, the first channel of the single-pole double-throw switch K, the ammeter, the switch K3 and the capacitor C2 are connected in series to form a second charging circuit; The capacitor C1, the potentiometer Rp, the second channel of the single-pole double-throw switch K and the ammeter are connected in series to form a first discharge circuit; The capacitor C2, the potentiometer Rp, the second channel of the single-pole double-throw switch K and the ammeter are connected in series to form a second discharge circuit; The capacitor C1 is connected in parallel with the capacitor C2, the voltmeter and the switch K1 form a voltage measurement branch, and the voltmeter is connected in parallel with the capacitor C1 and the capacitor C2; The ammeter is connected in parallel with the switch K2, and the ammeter is connected in series with at least one of the capacitor C1 and the capacitor C2; The display mechanism comprises an elastic component and a fixing component fixedly connected thereto. When the fixing component abuts against the wire, force is applied to the wire to limit the position of the wire.

2. The capacitor charging and discharging demonstration device according to claim 1, characterized in that: The first charging circuit, the second charging circuit, the first discharging circuit, and the second discharging circuit are all electrically connected through wires and are arranged on the display mechanism.

3. The capacitor charging and discharging demonstration device according to claim 2, characterized in that: The display mechanism includes a front panel, a panel frame, a rear panel, a fixing unit and a limiting unit. The front panel is arranged in the panel frame and fixedly connected thereto. The rear panel is detachably connected to the panel frame through the fixing unit. A cavity is formed between the front panel and the rear panel. The first charging circuit, the second charging circuit, the first discharging circuit and the second discharging circuit are all arranged in the cavity.

4. The capacitor charging and discharging demonstration device according to claim 3, characterized in that: The fixing unit includes a fixing plate, a tension spring and a fixing pin. The same blind holes are provided at the four corners of the plate frame and the four corners of the rear panel. The fixing plate is a "V"-shaped structure as a whole, and columns are provided at both ends thereof protruding outward. The columns match the blind holes. The fixing pin passes through the fixing plate, and its pin rod portion is limited to the plate frame, and the pin head portion is limited to the middle part of the fixing plate. The two ends of the tension spring are respectively fixed to the plate frame and the pin rod portion of the fixing pin.

5. The capacitor charging and discharging demonstration device according to claim 4, characterized in that: The limiting unit includes a limiting seat, a limiting plate, a compression spring, and an insulating sleeve. The limiting seat and the compression spring are both fixed on the side wall of the plate frame. The limiting plate is arranged through the limiting seat. The limiting plate extends outward along its end surface to form a connecting portion. The connecting portion and the limiting seat are both provided with the same strip hole. The connecting portion is bolted and / or not connected to the limiting seat. One end of the compression spring away from the plate frame abuts against the limiting plate. The side wall of the limiting plate also extends outward to form an extension portion. The wire is arranged along the plate frame. The extension portion is bent in the direction of the wire, and an insulating sleeve is also sleeved on the extension portion.

6. The capacitor charging and discharging demonstration device according to claim 5, characterized in that: The front panel is a light-transmitting acrylic plate, and the capacitor charging and discharging demonstration device also includes an LED light bar, which is arranged in the cavity.

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