CN106357255A - Light-touch key type electronic switch of small direct-current motor - Google Patents
Light-touch key type electronic switch of small direct-current motor Download PDFInfo
- Publication number
- CN106357255A CN106357255A CN201610943581.1A CN201610943581A CN106357255A CN 106357255 A CN106357255 A CN 106357255A CN 201610943581 A CN201610943581 A CN 201610943581A CN 106357255 A CN106357255 A CN 106357255A
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- Prior art keywords
- resistance
- audion
- electrode
- emitter
- power supply
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a light-touch key type electronic switch of a small direct-current motor. The light-touch key type electronic switch comprises a power supply GB, a direct-current motor M, a light-touch switch S, capacitors C1 and C2, resistors R1, R2, R3, R4, R5, R6, R7 and R8 and triodes Q1, Q2 and Q3, wherein a negative electrode of the power supply GB is grounded, and a positive electrode of the power supply GB is connected with one end of R1, an emitter e of the Q1 and a positive electrode of the motor M; the other end of the R1 and a base b of the Q1 are connected with one end of the R4 and a collector c of the Q2 by the R2; the other end of the R4 is connected with one electrode of the C1 and one end of the light-touch switch S; the other electrode of the C1 is grounded; the other end of the light-touch switch S is connected with one end of the R5, one end of the R6, one electrode of the C2 and a base b of the Q2 by the R7; an emitter e of the Q2 is grounded; a collector c of the Q1 is connected with the other end of the R5 and one end of the R3; the other end of the R3 is connected with a base b of the Q3 and one end of the R8; a collector c of the Q3 is connected with a negative electrode of the motor M; and the other end of the R8 and an emitter e of the Q3 are grounded. The light-touch key type electronic switch disclosed by the invention is reasonable in design and reliable in continuous control.
Description
Technical field
The present invention relates to the electrical switch not contacted by break-make or gating, especially a kind of small DC motor touch by
Keyed electrical switch.
Background technology
In daily life, we commonly use the displacement-type on-off control unidirectional current such as toggle switch, slide switches and rotary switch
The lasting break-make of machine, or the touch switch such as conventional button switch controls the moment break-make of direct current generator.In rinsing type electric shaving
The small DC motor of the domestic small electric apparatus such as palpus knife, brush for washing face, electric toothbrush continues in the circuit control of break-make, and displacement-type switch is logical
Often need larger installing space, its assembling is inconvenient；Touch switch cannot meet control using conventional connected mode again
Need, therefore, become a difficult problem using the lasting break-make that touch switch controls small DC motor.
Content of the invention
In order to overcome, prior art has displacement-type switch assembling inconvenience, the inapplicable control of touch switch is persistently led to
Disconnected deficiency, the present invention provides a kind of reasonable in design, easy to assembly, light touch bottom type of the reliable small DC motor of Sustainable Control
Electrical switch.
The technical solution adopted for the present invention to solve the technical problems is: a kind of light touch bottom type electronics of small DC motor
Switch, it includes a power supply gb and direct current generator m, and the described positive pole of power supply gb is connected with the positive pole of described direct current generator m
Connect, the minus earth of power supply gb it is characterised in that: the positive pole of described power supply gb also respectively with resistance r1One end, audion q1
Emitter e be connected, resistance r1The other end respectively with audion q1Base stage b, resistance r2One end be connected, resistance r2
The other end respectively with resistance r4One end, audion q2Colelctor electrode c be connected, resistance r4The other end respectively with electric capacity c1
An electrode, one end of touch-switch s be connected, electric capacity c1Another electrode ground connection, the other end of touch-switch s is through resistance r7
Respectively with audion q2Base stage b, resistance r5One end, resistance r6One end, electric capacity c2An electrode be connected, resistance r6Another
One end, electric capacity c2Another electrode, audion q2Emitter e ground connection；Resistance r5The other end respectively with resistance r3One end, three
Pole pipe q1Colelctor electrode c be connected；Resistance r3The other end respectively with resistance r8One end, audion q3Base stage b be connected,
Audion q3Colelctor electrode c and direct current generator m negative pole, resistance r8The other end, audion q3Emitter e ground connection.
In described audion q3Colelctor electrode c and emitter e between reversely and meet a diode d.
The present invention utilizes touch-switch s to control electric capacity c1, electric capacity c2Charge or discharge, control audion q1, audion
q2, audion q3On or off, thus constituting electrical switch, so control direct current generator m start and stop, its design
Rationally, Sustainable Control is reliable；, in addition to power supply gb, direct current generator m, other original papers can be using surface mount elements composition, can be little for the present invention
Type circuit board, its take up room little, easy to assembly.
Brief description
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of circuit theory diagrams of the present invention.
In figure labelling: power supply gb, direct current generator m, touch-switch s, diode d, electric capacity c1, electric capacity c2,
Resistance r1, resistance r2, resistance r3, resistance r4, resistance r5, resistance r6, resistance r7, resistance r8, audion q1, (base stage b, current collection
Pole c, emitter e), audion q2, (base stage b, colelctor electrode c, emitter e) audion q3, (base stage b, colelctor electrode c, emitter e).
Specific embodiment
As shown in figure 1, a kind of light touch bottom type electrical switch of small DC motor, it includes power supply gb and a direct current generator
M, the positive pole of power supply gb is connected with the positive pole of described direct current generator m, the minus earth of power supply gb.In the present embodiment, electricity
Source gb is battery, and its voltage parameter is 3v；It is one for straight on electric shaver with the direct current generator m that power supply gb uses cooperatively
Stream motor.
In FIG, the positive pole of the power supply gb of the present invention also respectively with resistance r1One end, audion q1Emitter e be connected
Connect, resistance r1The other end respectively with audion q1Base stage b, resistance r2One end be connected, resistance r2The other end respectively with
Resistance r4One end, audion q2Colelctor electrode c be connected, resistance r4The other end respectively with electric capacity c1An electrode, touch out
The one end closing s is connected, electric capacity c1Another electrode ground connection.
For the other elements in cooperation circuit, in the present embodiment, resistance r1Parameter preferentially select 101k ω, resistance r2
Parameter preferentially select 1.8k ω, resistance r4Parameter preferentially select 220k ω.Electric capacity c1Parameter preferentially select 100nf.Three poles
Pipe q1The preferential pnp pipe selected as 5ct, audion q2The preferential npn pipe selected as 6ct.Touch-switch s switchs for touch key,
It closes in natural compression lower contact, resets in revocation natural compression back contact and disconnects.
In FIG, the other end of the touch-switch s of the present invention is through resistance r7Respectively with audion q2Base stage b, resistance r5
One end, resistance r6One end, electric capacity c2An electrode be connected, resistance r6The other end, electric capacity c2Another electrode, audion q2
Emitter e ground connection；Resistance r5The other end respectively with resistance r3One end, audion q1Colelctor electrode c be connected；Resistance r3
The other end respectively with resistance r8One end, audion q3Base stage b be connected, audion q3Colelctor electrode c and direct current generator m
Negative pole, resistance r8The other end, audion q3Emitter e ground connection.
In the present embodiment, resistance r3Parameter preferentially select 100 ω, resistance r5Parameter preferentially select 12k ω, resistance
r6Parameter preferentially select 101k ω, resistance r7Parameter preferentially select 100 ω, resistance r8Parameter preferentially select 101k ω.Electricity
Hold c2Parameter preferentially select 100nf.Audion q3From double octal paster integrated package, 1,2,3,6,7,8 feet are colelctor electrode
C, 4 feet are base stage b, and 5 feet are emitter e, and it can select different power tubes according to direct current generator m size.
In original state, power supply gb passes through resistance r to the present invention1, resistance r2, resistance r4, to electric capacity c1Charge, because of electric capacity c1
Initial state voltage can not be mutated for 0v, therefore initial charge current is maximum, and this electric current is in resistance r1The pressure drop being formed is unable to reach three poles
Pipe q1Base stage b, the conducting voltage between emitter e, audion q1It is in cut-off state；With the carrying out charged, when through certain
Time constant after, electric capacity c1Two ends fill voltage is suitable with power supply gb voltage, now, audion q2Base stage b no bias, three
Pole pipe q2It is in cut-off state, audion q3Also audion q1It is not turned on being in cut-off state, direct current generator m unpowered does not work.
When start uses, press touch-switch s, touch-switch s contact moment connects, electric capacity c1On voltage through resistance r7、
Resistance r6After partial pressure, to electric capacity c2Charge；As electric capacity c2Voltage rise to audion q2Conducting voltage when, audion q2Current collection
Pole c voltage is 0v, and hereafter, the voltage of power supply gb passes through resistance r1, resistance r2And audion q2Colelctor electrode c, emitter e ground connection；
Resistance r1The pressure drop got makes audion q1Also into saturation conduction state, hereafter, the voltage of power supply gb passes through audion q1Send out
Emitter-base bandgap grading e, colelctor electrode c, a road is through resistance r5, resistance r6After partial pressure, it is fed to audion q2Base stage b, make audion q2At continuation
In saturation conduction state；Then audion q1, audion q2Form self-locking power supply mode and continue power supply；Separately lead up to resistance r3, electricity
Resistance r8After partial pressure, it is fed to audion q3Base stage b, make audion q3Saturation conduction, audion q3Colelctor electrode c, emitter e
Between voltage be 0v, now, power supply gb pass through direct current generator m, audion q3Colelctor electrode c, emitter e formed loop, direct current
Motor m must electrically activate.Meanwhile, electric capacity c1By resistance r4, audion q2Colelctor electrode c, emitter e ground connection will be remaining
Voltage discharges, and its both end voltage remains 0v, makes preparation for shutdown.
During shutdown, press touch-switch s again, touch-switch s contact moment connects, audion q2Base stage b pass through electricity
Resistance r7, electric capacity c1Ground connection, because of electric capacity c1Voltage can not be mutated, resistance r7With resistance r6It is approximately at parallel connection, now, power supply gb
Voltage passes through audion q1Emitter e, colelctor electrode c, through resistance r5, resistance r approximately in parallel6With resistance r7After partial pressure, three poles
Pipe q2Base stage b divide to obtain voltage, this voltage volt value be less than audion q2Conducting voltage, audion q2Enter cut-off state quickly；
Resistance r1, resistance r2With audion q2Colelctor electrode c, emitter e current supply circuit be disconnected, audion q1Base stage b voltage recovery
To about power supply gb voltage, resistance r1Pressure drop be less than audion q1Conducting voltage, audion q1Cut-off, audion q then3Cut
Only, direct current generator m stops operating because current supply circuit interrupts.Hereafter, battery gb passes through resistance r1, resistance r2, resistance r4To electric capacity
c1Charge, with the carrying out charged, electric capacity c1Two ends fill voltage is suitable with power supply gb voltage, its be direct current generator m next time
Start ready.
For preventing audion q3Punctured by foreign voltage during cut-off, as shown in figure 1, in audion q3Colelctor electrode c and transmitting
Between the e of pole reversely and meet a diode d, its diode d plays damping protective effect.
The present invention utilizes touch-switch s to control electric capacity c1, electric capacity c2Charge or discharge, control audion q1, audion
q2, audion q3On or off, thus constituting electrical switch, and then control the starting or stoping of direct current generator m, its design
Rationally, Sustainable Control is reliable.
Claims (2)
1. the light touch bottom type electrical switch of a kind of small DC motor, it includes a power supply gb and direct current generator m, described power supply
The positive pole of gb is connected with the positive pole of described direct current generator m, the minus earth of power supply gb it is characterised in that: described power supply
The positive pole of gb also respectively with resistance r1One end, audion q1Emitter e be connected, resistance r1The other end respectively with three poles
Pipe q1Base stage b, resistance r2One end be connected, resistance r2Other end one end, the audion q with resistance r4 respectively2Current collection
Pole c is connected, resistance r4The other end respectively with electric capacity c1An electrode, one end of touch-switch s be connected, electric capacity c1Another
One electrode ground connection, the other end of touch-switch s is through resistance r7Respectively with audion q2Base stage b, resistance r5One end, resistance r6
One end, electric capacity c2An electrode be connected, resistance r6The other end, electric capacity c2Another electrode, audion q2Emitter e connect
Ground；Resistance r5The other end respectively with resistance r3One end, audion q1Colelctor electrode c be connected；Resistance r3The other end respectively
With resistance r8One end, audion q3Base stage b be connected, audion q3Colelctor electrode c and direct current generator m negative pole, resistance r8
The other end, audion q3Emitter e ground connection.
2. a kind of small DC motor according to claim 1 light touch bottom type electrical switch it is characterised in that: described
Audion q3Colelctor electrode c and emitter e between reversely and meet a diode d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610943581.1A CN106357255A (en) | 2016-11-02 | 2016-11-02 | Light-touch key type electronic switch of small direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610943581.1A CN106357255A (en) | 2016-11-02 | 2016-11-02 | Light-touch key type electronic switch of small direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106357255A true CN106357255A (en) | 2017-01-25 |
Family
ID=57864210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610943581.1A Withdrawn CN106357255A (en) | 2016-11-02 | 2016-11-02 | Light-touch key type electronic switch of small direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106357255A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787982A (en) * | 2016-11-30 | 2017-05-31 | 芯海科技（深圳）股份有限公司 | A kind of DC motor controlling circuit and control method |
| CN107066012A (en) * | 2017-06-16 | 2017-08-18 | 上海思依暄机器人科技股份有限公司 | A kind of on-off circuit and electronic equipment |
| WO2021103611A1 (en) * | 2019-11-28 | 2021-06-03 | 五邑大学 | Intelligent electric toothbrush with convenient automatic rotation speed adjustment |
-
2016
- 2016-11-02 CN CN201610943581.1A patent/CN106357255A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787982A (en) * | 2016-11-30 | 2017-05-31 | 芯海科技（深圳）股份有限公司 | A kind of DC motor controlling circuit and control method |
| CN107066012A (en) * | 2017-06-16 | 2017-08-18 | 上海思依暄机器人科技股份有限公司 | A kind of on-off circuit and electronic equipment |
| WO2021103611A1 (en) * | 2019-11-28 | 2021-06-03 | 五邑大学 | Intelligent electric toothbrush with convenient automatic rotation speed adjustment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170125 |