CN2669473Y - Weak-current low-power DC speed-regulating circuit - Google Patents
Weak-current low-power DC speed-regulating circuit Download PDFInfo
- Publication number
- CN2669473Y CN2669473Y CNU2003201283471U CN200320128347U CN2669473Y CN 2669473 Y CN2669473 Y CN 2669473Y CN U2003201283471 U CNU2003201283471 U CN U2003201283471U CN 200320128347 U CN200320128347 U CN 200320128347U CN 2669473 Y CN2669473 Y CN 2669473Y
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- triode
- speed
- regulating circuit
- power
- voltage stabilizing
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Abstract
The utility model relates to a light-current low-power DC speed-regulating circuit, comprising a triode (q1), and the first, the second. The nth constant voltage diodes (D1-DN) which respectively have one end connected with the base of the triode (Q1); wherein, the other end of the constant voltage diode D1 is connected to the ground; the other ends of the constant voltage diodes D2. DN are respectively formed into the control ends (DN2. INN) of the second, the third. The nth input levels of the speed-regulating circuit. The input terminal (IN1) of the first input level of the speed-regulating circuit is directly connected to the collector of the triode (Q1), and is connected to the base of the triode (Q1) via a resistor (R1), simultaneously; or, the input terminal (IN1) of the first input level of the speed-regulating circuit is directly connected to the base of the triode (Q1), and is connected to the collector of the triode (Q1) via a resistor (R1), simultaneously. The weak-current low-power DC speed-regulating circuit of the utility model is suitable for the light-current low-power DC electric machine, and can realize the multi-gear speed-regulating conveniently and reliably; compared with the speed-regulating circuit in the prior art, the light-current low-power DC speed-regulating circuit hasthe advantages of simple structure and lower cost.
Description
Technical field
The utility model relates to electronic technology, is specifically related to a kind of alignment circuit of light current small-power direct current machine.
Background technology
Generally, light current small-power DC motor speed-regulating scheme adopts adjusting velocity by voltage or PWM modulating speed control, its implementation complexity, and cost is higher.Adjusting velocity by voltage need be adjusted the triggered time of commutating pulse, then by transformer coupled transformation, again the alternating current of adjusting voltage is carried out rectification, offers load at last.The PWM modulation then needs to use some special chips, the implementation method complexity, and effect is not fine.
The utility model content
The utility model provides a kind of alignment circuit that simply is suitable for light current small-power direct current machine, can overcome the above-mentioned shortcoming of prior art, and cost is low, the reliability height, and can realize many grades of speed governing as required.
The above-mentioned technical problem of the utility model solves like this, construct a kind of small and weak power DC alignment circuit, N incoming level control end and 1 alignment circuit output are arranged, it is characterized in that, comprise that it launches the very triode of alignment circuit output (Q1), have respectively that an end is connected with the base stage of described triode (Q1) the 1st, the 2nd .... N voltage stabilizing didoe (D1-DN), described voltage stabilizing didoe D2 ... ..DN the other end constitutes the 2nd of described alignment circuit respectively, the 3rd .... N incoming level control end (IN2 ... ..INN), the 1st incoming level input (IN1) of described alignment circuit directly is connected the base stage that is connected to described triode (Q1) simultaneously by resistance (R1) with the collector electrode of described triode (Q1), perhaps the 1st incoming level input (IN1) of the described alignment circuit base stage that is directly connected to described triode (Q1) is connected to the collector electrode of described triode (Q1) simultaneously by resistance (R1), wherein, voltage stabilizing didoe D1, D2 ... the voltage stabilizing value of DN is successively decreased successively, height by control IN1～INN incoming level is a may command triode Q1 base voltage, thereby the voltage of control triode Q1 emitter output " OUT " is to reach the purpose of speed governing.
Implement the small and weak power DC alignment circuit that the utility model provides, be suitable for light current small-power direct current machine, realize many grades of speed governing easily and reliably, this alignment circuit, more simple in structure than the alignment circuit of prior art, cost is lower.
Description of drawings
Fig. 1 is the circuit theory diagrams of an embodiment of the utility model light current small-power DC motor speed-regulating circuit.
Fig. 2 is the circuit theory diagrams of another embodiment of the utility model light current small-power DC motor speed-regulating circuit.
Embodiment
In the circuit theory diagrams of an embodiment of light current small-power DC motor speed-regulating circuit as shown in Figure 1, Q1 is the NPN triode, its watt level can be selected according to actual needs, D1～D4 is a voltage stabilizing didoe, its voltage stabilizing value is successively decreased successively, and speed governing shelves number increases or reduce the quantity of voltage-stabiliser tube according to actual needs; R1 is common fixed carbon resister.Utilize voltage stabilizing didoe D1～D4 voltage stabilizing value this characteristic of successively decreasing successively, the height by control IN1～IN4 incoming level is a may command Q1 base voltage, thus the voltage of control Q1 output " OUT ", to reach the purpose of speed governing.
List its truth table (1 represents high level, and 0 represents ground connection, and a, b, c, d represent the different voltage output values by Q1 output " OUT " after D1～D4 clamper respectively) below:
| IN1 | IN2 | IN3 | IN4 | OUT |
| 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 1 | a |
| 1 | 0 | 1 | 1 | b |
| 1 | 1 | 0 | 1 | c |
| 1 | 1 | 1 | 0 | d |
Generally speaking, be the damage of the big electric current that prevents to cause for a certain reason to circuit, can be at the current-limiting resistance of the high-power little resistance of output series connection of Q1.
If because IN1 is the output of smaller power chip or triode, can not provide machine operation required big electric current for a long time, can adopt the scheme of another embodiment shown in Figure 2 this moment, on the collector electrode of triode, be added with working power V1, its principle and truth table and embodiment illustrated in fig. 1 basic identical, just this moment, current of electric was provided by V1, and the voltage of V1 when requiring than the IN1 high level is slightly higher.
Claims (2)
1, a kind of light current small-power DC motor speed-regulating circuit, N incoming level control end and 1 alignment circuit output are arranged, it is characterized in that, comprise that it launches the very triode of alignment circuit output (Q1), have respectively that an end is connected with the base stage of described triode (Q1) the 1st, 2.... N voltage stabilizing didoe (D1-DN), the other end ground connection of described voltage stabilizing didoe D1, the other end of described voltage stabilizing didoe D2.....DN constitutes the 2nd of described alignment circuit respectively, 3.... N incoming level control end (IN2.....INN), the 1st incoming level input (IN1) of described alignment circuit directly is connected the base stage that is connected to described triode (Q1) simultaneously by resistance (R1) with the collector electrode of described triode (Q1), and perhaps the 1st incoming level input (IN1) of the described alignment circuit base stage that is directly connected to described triode (Q1) is connected to the collector electrode of described triode (Q1) simultaneously by resistance (R1).
2, according to the described light current small-power of claim 1 DC motor speed-regulating circuit, it is characterized in that, the voltage stabilizing value of described voltage stabilizing didoe D1, D2......DN is successively decreased successively, height by control IN1～INN incoming level is controlled described triode (Q1) base voltage, thereby the voltage of controlling described triode (Q1) emitter output " OUT " is to realize speed governing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201283471U CN2669473Y (en) | 2003-12-31 | 2003-12-31 | Weak-current low-power DC speed-regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201283471U CN2669473Y (en) | 2003-12-31 | 2003-12-31 | Weak-current low-power DC speed-regulating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669473Y true CN2669473Y (en) | 2005-01-05 |
Family
ID=34439396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201283471U Expired - Fee Related CN2669473Y (en) | 2003-12-31 | 2003-12-31 | Weak-current low-power DC speed-regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669473Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928028A (en) * | 2014-04-25 | 2014-07-16 | 黑龙江大学 | Voice response pendant and voice response method |
-
2003
- 2003-12-31 CN CNU2003201283471U patent/CN2669473Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928028A (en) * | 2014-04-25 | 2014-07-16 | 黑龙江大学 | Voice response pendant and voice response method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |