Air a1

Air a1

此参考设计是一个简单的电路，可用作空气滤清器电机。该电路由电机、电机驱动器和电源组成。电源来自电压为 220VAC 的插座。变压器将 220VAC 降压至 12VAC 电压，并由 D1 和 D2 整流，使其成为直流电压。脉动直流和整流器输出的噪声由电容器C1和C2滤除，使直流电压平滑。为了消除电容滤波器输出端的纹波并将直流电压调节至12VDC，在电源电路中增加了一个稳压器。电容C3是一个附加滤波器，用于消除稳压器输出端的无用噪声。

电机驱动电路是一个晶体管，通过配置为PWM发生器的定时器打开和关闭。电机的转速由晶体管基端信号的频率和占空比控制。定时器产生的PWM信号的频率和占空比取决于电阻R1、R2、R3和电容C4的值。 PWM信号的占空比通过可变电阻R3进行调整。电机及其驱动器受 TE 连接 RUSBF110-2 多晶开关 PTC 可复位保险丝的保护。该器件通过在由于电机故障而发生过流和过热情况时从低电阻状态变为高电阻状态来保护电路。

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Incorporated Products

IMAGE

MANUFACTURER PART NUMBER

DESCRIPTION

QUANTITY

VIEW DETAILS

1

LM555CN/NOPB

IC OSC SINGLE TIMER 100KHZ 8-DIP

1

2

RUSBF110-2

POLYSWITCH PTC RESET 1.1A T/R

1

3

L78S12CV

IC REG LDO 12V 2A TO220AB

1

4

1623404-1

RES SMD 10K OHM 1% 1/4W 1206

2

5

6-1676003-1

POT 100K OHM 1/5W CARBON LINEAR

1

6

GRM155R71E473KA88D

CAP CER 0.047UF 25V 10% X7R 0402

1

7

GRM155R71H103KA88D

CAP CER 10000PF 50V 10% X7R 0402

1

8

CRG1206F1K5

RES SMD 1.5K OHM 1% 1/4W 1206

1

9

16N78-212E.1001

MOTOR BRUSHED DC 4W 12V 8400RPM

1

10

TIP120

TRANS NPN DARL 60V 5A TO-220

1

11

182K12

XFRMR TOROIDAL 30VA CHAS MOUNT

1

12

ES3D-E3/57T

DIODE GEN PURP 200V 3A DO214AB

2

13

EEV-FK1E222M

CAP ALUM 2200UF 20% 25V SMD

1

14

C1608X7R1H334K080AC

CAP CER 0.33UF 50V 10% X7R 0603

1

15

C0603C104M5RACTU

CAP CER 0.1UF 50V 20% X7R 0603

1

16

1N4148X-TP

DIODE GEN PURP 75V 150MA SOD523

1

LM555CN/NOPB

IC OSC SINGLE TIMER 100KHZ 8-DIP

Quantity: 1

RUSBF110-2

POLYSWITCH PTC RESET 1.1A T/R

Quantity: 1

L78S12CV

IC REG LDO 12V 2A TO220AB

Quantity: 1

1623404-1

RES SMD 10K OHM 1% 1/4W 1206

Quantity: 2

6-1676003-1

POT 100K OHM 1/5W CARBON LINEAR

Quantity: 1

GRM155R71E473KA88D

CAP CER 0.047UF 25V 10% X7R 0402

Quantity: 1

GRM155R71H103KA88D

CAP CER 10000PF 50V 10% X7R 0402

Quantity: 1

CRG1206F1K5

RES SMD 1.5K OHM 1% 1/4W 1206

Quantity: 1

16N78-212E.1001

MOTOR BRUSHED DC 4W 12V 8400RPM

Quantity: 1

TIP120

TRANS NPN DARL 60V 5A TO-220

Quantity: 1

182K12

XFRMR TOROIDAL 30VA CHAS MOUNT

Quantity: 1

ES3D-E3/57T

DIODE GEN PURP 200V 3A DO214AB

Quantity: 2

EEV-FK1E222M

CAP ALUM 2200UF 20% 25V SMD

Quantity: 1

C1608X7R1H334K080AC

CAP CER 0.33UF 50V 10% X7R 0603

Quantity: 1

C0603C104M5RACTU

CAP CER 0.1UF 50V 20% X7R 0603

Quantity: 1

1N4148X-TP

DIODE GEN PURP 75V 150MA SOD523

Quantity: 1

About this Schematic

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Last Updated

2023-07-30 07:00

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