LFA100F-5-SNY,LFA100F-5-SNY pdf中文资料,LFA100F-5-SNY引脚图,LFA100F-5-SNY电路-Datasheet-电子工程世界

文档预览

AC-DC Power Supplies Open Frame/ Enclosed Type

Ordering information

LFA10F

-O

Recommended EMI/EMC Filter

NAC-04-472

LFA

High voltage pulse noise type : NAP series

Low leakage current type : NAM series

The EMI/EMC Filter is recommended

to connect with several devices.

Series name

Single output

Output wattage

Universal input

Output voltage

Optional

C : with Coating

G : Low leakage current

J1 : VH(J.S.T.)connector type

S : with Chassis

SN: with Chassis & cover

Y : with Potentiometer

Specification is changed at

option, refer to Instruction

Manual.

This power supply is manufactured by SMD technology. The stress to P.C.B like twisting or bending causes the defect of the unit, so handle the unit with care.

MODEL

MAX OUTPUT WATTAGE[W]

DC OUTPUT

LFA10F-3R3-Y

6.6

3.3V 2A

LFA10F-5

5V 2A

LFA10F-12

10.8

12V 0.9A

LFA10F-15

10.5

15V 0.7A

LFA10F-24

24V 0.5A

SPECIFICATIONS

MODEL

VOLTAGE[V]

CURRENT[A]

FREQUENCY[Hz]

ACIN 100V

ACIN 200V

LFA10F-3R3-Y

LFA10F-5

LFA10F-12

LFA10F-15

LFA10F-24

AC85 - 264 1f (Refer to Instruction Manual 1.1 and 3.2)

0.18typ (Io=100%)

0.26typ (Io=100%)

0.11typ (Io=100%)

0.16typ (Io=100%)

50 / 60 (47 - 440)

68.0typ

74.0typ

76.5typ

77.5typ

79.5typ

68.5typ

76.0typ

79.0typ

80.0typ

83.0typ

15typ (Io=100%)

30typ (Io=100%)

0.15/0.30max (ACIN 100V / 240V 60Hz, Io=100%, According to IEC60950-1 and DEN-AN)

3.3

2.0

0.9

0.7

0.5

20max

48max

60max

96max

40max

100max

120max

150max

80max

120max

140max

160max

190max

160max

240max

280max

120max

150max

160max

180max

240max

300max

320max

50max

120max

150max

240max

60max

150max

180max

290max

20max

48max

60max

96max

200typ (ACIN 100V, Io=100%)

*Start-up

time is 700ms typ for less than 1minute of applying input again from turning off the input voltage.

20typ (ACIN 100V, Io=100%)

2.85 to 3.63

Fixed (“Y”option is available for adjusting output voltage between

±10%)

3.30 to 3.40

4.90 to 5.30

11.50 to 12.50

14.40 to 15.60

23.00 to 25.00

Works over 105% of rating and recovers automatically

4.00 to 5.25

5.75 to 7.00

13.80 to 16.80

17.25 to 21.00

27.60 to 33.60

Not provided

AC3,000V 1minute, Cutoff current = 10mA, DC500V 50MW min (At Room Temperature)

AC2,000V 1minute, Cutoff current = 10mA, DC500V 50MW min (At Room Temperature)

AC500V 1minute, Cutoff current = 25mA, DC500V 50MW min (At Room Temperature)

-10 to +70C, 20 - 90%RH (Non condensing) (Refer to Instruction Manual 3.2), 3,000m (10,000 feet) max

-20 to +75C, 20 - 90%RH (Non condensing), 9,000m (30,000 feet) max

10 - 55Hz, 19.6m/s

(2G), 3minutes period, 60minutes each along X, Y and Z axis

196.1m/s

(20G), 11ms, once each X, Y and Z axis

UL60950-1, C-UL (CSA60950-1), EN60950-1, EN60065, EN50178 Complies with DEN-AN

Complies with FCC-B, VCCI-B, CISPR-B, EN55011-B, EN55022-B

Complies with IEC61000-3-2 (Class A)

(Not built-in to active ﬁlter)

50X22X73.5mm [1.97X0.87X2.89 inches] (WXHXD) / 55g max (with chassis & cover : 150g max)

Convection (Refer to Instruction Manual 3.1 and 3.2)

factor Io=0-35% is different.

Please refer to the Instruction Manual 1.7.

Drift is the change in DC output for an eight hour period after

a half-hour warm-up at 25C, with the input voltage held

constant at the rated input/output.

Derating is required.

When two or more units are operating it may not comply with

the IEC61000-3-2.

Please contact us for details.

Please contact us about dynamic load and input response.

Please contact us about another class.

To meet the speciﬁcations. Do not operate over-loaded condition.

Parallel operation is not possible.

Derating is required when operated with chassis and cover.

Sound noise may be generated by power supply in case of pulse

load.

INPUT

ACIN 100V

ACIN 200V

ACIN 100V

INRUSH CURRENT[A]

ACIN 200V

LEAKAGE CURRENT[mA]

VOLTAGE[V]

CURRENT[A]

LINE REGULATION[mV]

LOAD REGULATION[mV]

0 to +50C

RIPPLE[mVp-p]

-10 - 0C

Io=0 - 35%

0 to +50C

RIPPLE NOISE[mVp-p]

OUTPUT

-10 - 0C

Io=0 - 35%

0 to +50C

TEMPERATURE REGULATION[mV]

-10 to +50C

DRIFT[mV]

START-UP TIME[ms]

HOLD-UP TIME[ms]

OUTPUT VOLTAGE ADJUSTMENT RANGE[V]

OUTPUT VOLTAGE SETTING[V]

OVERCURRENT PROTECTION

PROTECTION OVERVOLTAGE PROTECTION

CIRCUIT AND OPERATING INDICATION

OTHERS

REMOTE SENSING

REMOTE ON/OFF

INPUT-OUTPUT

INPUT-FG

ISOLATION

OUTPUT-FG

OPERATING TEMP.,HUMID.AND ALTITUDE

STORAGE TEMP.,HUMID.AND ALTITUDE

ENVIRONMENT

VIBRATION

IMPACT

AGENCY APPROVALS

SAFETY AND

NOISE

CONDUCTED NOISE

REGULATIONS HARMONIC ATTENUATOR

CASE SIZE/WEIGHT

OTHERS

COOLING METHOD

EFFICIENCY[%]

This is the value that measured on measuring board with

capacitor of 22mF at 150mm from output terminal.

Measured by 20MHz oscilloscope or Ripple-Noise meter

(Equivalent to KEISOKU-GIKEN: RM103).

A circuit reducing standby power is built in this unit.

Therefore, the internal switch element is intermittent

operated, and the Ripple/Ripple Noise specification in load

LFA-2

LFA10F

Block diagram

FUSE

AC250V

INRUSH

CURRENT

LIMIT

RECTIFIER

AND

FILTER

AC IN

85 264V

NOISE

FILTER

LFA

TRANSFORMER

CONTROL

INVERTER

RECTIFIER

AND

FILTER

DC OUT

CURRENT

SENSING

Photocoupler

CONTROL

Photocoupler

OVER VOLTAGE

PROTECTION

External view

[0.2]

Standard type

4.6

[0.18]

Chassis and cover type

f3.5

[1.25]

83.5

0.5

[3.29]

[0.2]

4-M3

Mounting Hole

[1.97]

0.5

[1.57]

CN1

Input(L)

[0.2]

63.5

0.5

[2.5]

Input(L)

Name plate

73.5

[2.89]

Point A

Point B

[0.71]

93.5

[3.68]

f3.5

83.5

0.5

[3.29]

[0.2]

4max

[0.16]

¶1

Surface mount device

[0.14]

3.5

[0.43]

PCB t=1.6

[0.14]

3.5

Voltage adjust

(LFA10F-3R3-Y or optional)

2-f3.5

Mounting Hole

0.5

[1.18]

Input(N)

The back side of P.C.B. of the power supply is assembled some

SMDs.

Be attention not to bump against the attached area by vibration.

Use the spacer of 8mm length or more regarding insulation.

And do not use press-fitting bush.

Point A, Point B are thermometry points. Please refer to

Instruction Manual 3.

I/O Connector

CN1

1-1123724-3

CN2

1-1123723-2

Mating connector

Terminal

1123721-1

Chain

Loose

1318912-1

Chain

1123721-1

Loose

1318912-1

(Mfr:Tyco

Electronics)

2-M3

Mounting Hole

CN1

Pin No.

Input

AC(L)

AC(N)

CN2

Pin No.

Output

-V

Tolerance :

±1

[±0.04]

Weight : 55g max (with chassis & cover : 150g max)

PCB material / thickness : CEM3 / 1.6mm

Optional chassis and cover material : Electric galvanizing steel board.

Dimensions in mm, [ ]=inches

Mounting torque (Mounting hole of chassis) : 0.6N

m (6.3kgf

cm) max

1-1123722-5

1-1123722-2

I/O Connector is Mfr. Tyco Electronics

Option:-J1:(J.S.T) connector type. Refer to Instruction Manual 5.

[0.63]

[1.26]

LFA-3

[2.36]

CN1

CN2

Output(-)

Output(+)

[1.18]

Input(N)

[0.59]

Output(-)

Output(+)

31.7

CN2

AC-DC Power Supplies Open Frame/ Enclosed Type

Ordering information

LFA15F

-O

Recommended EMI/EMC Filter

NAC-04-472

LFA

High voltage pulse noise type : NAP series

Low leakage current type : NAM series

The EMI/EMC Filter is recommended

to connect with several devices.

Series name

Single output

Output wattage

Universal input

Output voltage

Optional

C : with Coating

G : Low leakage current

J1 : VH(J.S.T.)connector type

S : with Chassis

SN: with Chassis & cover

Y : with Potentiometer

Specification is changed at

option, refer to Instruction

Manual.

This power supply is manufactured by SMD technology. The stress to P.C.B like twisting or bending causes the defect of the unit, so handle the unit with care.

MODEL

MAX OUTPUT WATTAGE[W]

DC OUTPUT

LFA15F-3R3-Y

9.9

3.3V 3A

LFA15F-5

5V 3A

LFA15F-12

15.6

12V 1.3A

LFA15F-15

15V 1A

LFA15F-24

16.8

24V 0.7A

SPECIFICATIONS

MODEL

VOLTAGE[V]

CURRENT[A]

FREQUENCY[Hz]

ACIN 100V

ACIN 200V

ACIN 100V

INRUSH CURRENT[A]

ACIN 200V

LEAKAGE CURRENT[mA]

VOLTAGE[V]

CURRENT[A]

LINE REGULATION[mV]

LOAD REGULATION[mV]

0 to +50C

RIPPLE[mVp-p]

-10 - 0C

Io=0 - 35%

0 to +50C

RIPPLE NOISE[mVp-p]

OUTPUT

-10 - 0C

Io=0 - 35%

0 to +50C

TEMPERATURE REGULATION[mV]

-10 to +50C

DRIFT[mV]

START-UP TIME[ms]

HOLD-UP TIME[ms]

OUTPUT VOLTAGE ADJUSTMENT RANGE[V]

OUTPUT VOLTAGE SETTING[V]

OVERCURRENT PROTECTION

PROTECTION OVERVOLTAGE PROTECTION

CIRCUIT AND OPERATING INDICATION

OTHERS

REMOTE SENSING

REMOTE ON/OFF

INPUT-OUTPUT

INPUT-FG

ISOLATION

OUTPUT-FG

OPERATING TEMP.,HUMID.AND ALTITUDE

STORAGE TEMP.,HUMID.AND ALTITUDE

ENVIRONMENT

VIBRATION

IMPACT

AGENCY APPROVALS

SAFETY AND

NOISE

CONDUCTED NOISE

REGULATIONS HARMONIC ATTENUATOR

CASE SIZE/WEIGHT

OTHERS

COOLING METHOD

EFFICIENCY[%]

ACIN 100V

ACIN 200V

INPUT

LFA15F-3R3-Y

LFA15F-5

LFA15F-12

LFA15F-15

LFA15F-24

AC85 - 264 1f (Refer to Instruction Manual 1.1 and 3.2)

0.24typ (Io=100%)

0.35typ (Io=100%)

0.15typ (Io=100%)

0.20typ (Io=100%)

50 / 60 (47 - 440)

68.0typ

73.0typ

76.0typ

77.0typ

78.0typ

69.0typ

76.0typ

78.5typ

80.0typ

81.5typ

15typ (Io=100%) (At cold start) (Ta=25C)

30typ (Io=100%) (At cold start) (Ta=25C)

0.15/0.30max (ACIN 100V / 240V 60Hz, Io=100%, According to IEC60950-1 and DEN-AN)

3.3

3.0

1.3

1.0

0.7

20max

48max

60max

96max

40max

100max

120max

150max

80max

120max

140max

160max

190max

160max

240max

280max

120max

150max

160max

180max

240max

300max

320max

50max

120max

150max

240max

60max

150max

180max

290max

20max

48max

60max

96max

200typ (ACIN 100V, Io=100%)

*Start-up

time is 700ms typ for less than 1minute of applying input again from turning off the input voltage.

20typ (ACIN 100V, Io=100%)

2.85 to 3.63

Fixed (“Y”option is available for adjusting output voltage between

±10%)

3.30 to 3.40

4.90 to 5.30

11.50 to 12.50

14.40 to 15.60

23.00 to 25.00

Works over 105% of rating and recovers automatically

4.00 to 5.25

5.75 to 7.00

13.80 to 16.80

17.25 to 21.00

27.60 to 33.60

Not provided

AC3,000V 1minute, Cutoff current = 10mA, DC500V 50MW min (At Room Temperature)

AC2,000V 1minute, Cutoff current = 10mA, DC500V 50MW min (At Room Temperature)

AC500V 1minute, Cutoff current = 25mA, DC500V 50MW min (At Room Temperature)

-10 to +70C, 20 - 90%RH (Non condensing) (Refer to Instruction Manual 3.2), 3,000m (10,000 feet) max

-20 to +75C, 20 - 90%RH (Non condensing), 9,000m (30,000 feet) max

10 - 55Hz, 19.6m/s

(2G), 3minutes period, 60minutes each along X, Y and Z axis

196.1m/s

(20G), 11ms, once each X, Y and Z axis

UL60950-1, C-UL (CSA60950-1), EN60950-1, EN60065, EN50178 Complies with DEN-AN

Complies with FCC-B, VCCI-B, CISPR-B, EN55011-B, EN55022-B

Complies with IEC61000-3-2 (Class A)

(Not built-in to active ﬁlter)

50X22X87.5mm [1.97X0.87X3.44 inches] (WXHXD) / 80g max (with chassis & cover : 190g max)

Convection (Refer to Instruction Manual 3.1 and 3.2)

factor Io=0-35% is different.

Please refer to the Instruction Manual 1.7.

Drift is the change in DC output for an eight hour period after

a half-hour warm-up at 25C, with the input voltage held

constant at the rated input/output.

Derating is required.

When two or more units are operating it may not comply with

the IEC61000-3-2.

Please contact us for details.

Please contact us about dynamic load and input response.

Please contact us about another class.

To meet the speciﬁcations. Do not operate over-loaded condition.

Parallel operation is not possible.

Derating is required when operated with chassis and cover.

Sound noise may be generated by power supply in case of pulse

load.

This is the value that measured on measuring board with

capacitor of 22mF at 150mm from output terminal.

Measured by 20MHz oscilloscope or Ripple-Noise meter

(Equivalent to KEISOKU-GIKEN: RM103).

A circuit reducing standby power is built in this unit.

Therefore, the internal switch element is intermittent

operated, and the Ripple/Ripple Noise specification in load

LFA-4

LFA15F

Block diagram

FUSE

AC250V

2.5A

INRUSH

CURRENT

LIMIT

RECTIFIER

AND

FILTER

AC IN

85 264V

NOISE

FILTER

LFA

TRANSFORMER

CONTROL

INVERTER

RECTIFIER

AND

FILTER

DC OUT

CURRENT

SENSING

Photocoupler

CONTROL

Photocoupler

OVER VOLTAGE

PROTECTION

External view

Standard type

[0.2]

Chassis and cover type

4.4

[0.17]

f3.5

97.5

0.5

[3.84]

[0.2]

4-M3

Mounting Hole

[1.97]

0.5

[1.57]

Input(N)

Input(L)

0.5

[1.18]

[0.2]

77.5

0.5

[3.05]

2-f3.5

Mounting Hole

Input(L)

Name plate

87.5

[3.44]

Point A

Point B

f3.5

107.5

[4.23]

97.5

0.5

[3.84]

[0.2]

[0.71]

[0.14]

[0.43]

3.5

[0.14]

3.5

Input(N)

4max

[0.16]

¶1

Surface mount device

2-M3

Mounting Hole

The back side of P.C.B. of the power supply is assembled some

SMDs.

Be attention not to bump against the attached area by vibration.

Use the spacer of 8mm length or more regarding insulation.

And do not use press-fitting bush.

Point A, Point B are thermometry points. Please refer to

Instruction Manual 3.

I/O Connector

CN1

1-1123724-3

CN2

1-1123723-2

Mating connector

Terminal

1123721-1

Chain

Loose

1318912-1

Chain

1123721-1

Loose

1318912-1

(Mfr:Tyco

Electronics)

CN1

Pin No.

Input

AC(L)

AC(N)

CN2

Pin No.

Output

-V

Tolerance :

±1

[±0.04]

Weight : 80g max (with chassis & cover : 190g max)

PCB material / thickness : CEM3 / 1.6mm

Optional chassis and cover material : Electric galvanizing steel board.

Dimensions in mm, [ ]=inches

Mounting torque (Mounting hole of chassis) : 0.6N

m (6.3kgf

cm) max

1-1123722-5

1-1123722-2

I/O Connector is Mfr. Tyco Electronics

Option:-J1:(J.S.T) connector type. Refer to Instruction Manual 5.

PCB t=1.6

[0.63]

¶1

LFA-5

[1.26]

[2.36]

Voltage adjust

(LFA15F-3R3-Y or optional)

CN1

CN2

Output(-)

Output(+)

[1.18]

[0.59]

CN1

CN2

Output(-)

Output(+)

[1.17]

29.7

AC-DC Power Supplies Open Frame/ Enclosed Type

Ordering information

LFA30F

-O

Recommended EMI/EMC Filter

NAC-04-472

LFA

High voltage pulse noise type : NAP series

Low leakage current type : NAM series

The EMI/EMC Filter is recommended

to connect with several devices.

Series name

Single output

Output wattage

Universal input

Output voltage

Optional

C : with Coating

G : Low leakage current

J1 : VH(J.S.T.)connector type

S : with Chassis

SN: with Chassis & cover

Y : with Potentiometer

Specification is changed at

option, refer to Instruction

Manual.

This power supply is manufactured by SMD technology. The stress to P.C.B like twisting or bending causes the defect of the unit, so handle the unit with care.

MODEL

MAX OUTPUT WATTAGE[W]

DC OUTPUT

LFA30F-3R3-Y

19.8

3.3V 6A

LFA30F-5

30.0

5V 6A

LFA30F-12

30.0

12V 2.5A

LFA30F-15

30.0

15V 2A

LFA30F-24

31.2

24V 1.3A

SPECIFICATIONS

MODEL

VOLTAGE[V]

CURRENT[A]

FREQUENCY[Hz]

INPUT

ACIN 100V

ACIN 200V

ACIN 100V

INRUSH CURRENT[A]

ACIN 200V

LEAKAGE CURRENT[mA]

VOLTAGE[V]

CURRENT[A]

LINE REGULATION[mV]

LOAD REGULATION[mV]

0 to +50C

RIPPLE[mVp-p]

-10 - 0C

0 to +50C

RIPPLE NOISE[mVp-p]

-10 - 0C

0 to +50C

TEMPERATURE REGULATION[mV]

-10 to +50C

DRIFT[mV]

START-UP TIME[ms]

HOLD-UP TIME[ms]

OUTPUT VOLTAGE ADJUSTMENT RANGE[V]

OUTPUT VOLTAGE SETTING[V]

OVERCURRENT PROTECTION

OVERVOLTAGE PROTECTION

OPERATING INDICATION

REMOTE SENSING

REMOTE ON/OFF

INPUT-OUTPUT

INPUT-FG

OUTPUT-FG

OPERATING TEMP.,HUMID.AND ALTITUDE

STORAGE TEMP.,HUMID.AND ALTITUDE

VIBRATION

IMPACT

AGENCY APPROVALS

CONDUCTED NOISE

HARMONIC ATTENUATOR

CASE SIZE/WEIGHT

COOLING METHOD

EFFICIENCY[%]

ACIN 100V

ACIN 200V

LFA30F-3R3-Y

LFA30F-5

LFA30F-12

LFA30F-15

LFA30F-24

AC85 - 264 1f (Refer to Instruction Manual 1.1 and 3.2)

0.50typ (Io=100%)

0.65typ (Io=100%)

0.30typ (Io=100%)

0.35typ (Io=100%)

50 / 60 (47 - 440)

73typ

76typ

79typ

81typ

82typ

75typ

79typ

81typ

83typ

84typ

15typ (Io=100%)

(At cold start)

(Ta=25C)

30typ (Io=100%)

(At cold start)

(Ta=25C)

0.30 / 0.65max (ACIN 100V / 240V 60Hz, Io=100%, According to IEC60950-1 and DEN-AN)

3.3

6.0

2.5

2.0

1.3

20max

48max

60max

96max

40max

100max

120max

150max

80max

120max

140max

160max

120max

150max

160max

180max

50max

120max

150max

240max

60max

150max

180max

290max

20max

48max

60max

96max

150typ (ACIN 100V, Io=100%)

20typ (ACIN 100V, Io=100%)

2.85 to 3.63

Fixed (“Y”option is available for adjusting output voltage between

±10%)

3.30 to 3.40

4.90 to 5.30

11.50 to 12.50

14.40 to 15.60

23.00 to 25.00

Works over 105% of rating and recovers automatically

4.00 to 5.25

5.75 to 7.00

13.80 to 16.80

17.25 to 21.00

27.60 to 33.60

Not provided

AC3,000V 1minute, Cutoff current = 10mA, DC500V 50MW min (At Room Temperature)

AC2,000V 1minute, Cutoff current = 10mA, DC500V 50MW min (At Room Temperature)

AC500V 1minute, Cutoff current = 25mA, DC500V 50MW min (At Room Temperature)

-10 to +70C, 20 - 90%RH (Non condensing) (Refer to Instruction Manual 3.2), 3,000m (10,000feet) max

-20 to +75C, 20 - 90%RH (Non condensing), 9,000m (30,000feet) max

10 - 55Hz, 19.6m/s

(2G), 3minutes period, 60minutes each along X, Y and Z axis

196.1m/s

(20G), 11ms, once each X, Y and Z axis

UL60950-1, C-UL (CSA60950-1), EN60950-1, EN60065, EN50178 Complies with DEN-AN

Complies with FCC-B, VCCI-B, CISPR-B, EN55011-B, EN55022-B

Complies with IEC61000-3-2 (Class A)

(Not built-in to active ﬁlter)

50X26.5X105mm [1.97X1.04X4.13 inches] (WXHXD) / 130g max (with chassis & cover : 260g max)

Convection (Refer to Instruction Manual 3.1 and 3.2)

When two or more units are operating it may not comply with the IEC61000-3-2.

Please contact us for details.

Please contact us about dynamic load and input response.

Please contact us about another class.

To meet the speciﬁcations. Do not operate over-loaded condition.

Parallel operation is not possible.

Derating is required when operated with chassis and cover.

Sound noise may be generated by power supply in case of pulse load.

OUTPUT

PROTECTION

CIRCUIT AND

OTHERS

ISOLATION

ENVIRONMENT

SAFETY AND

NOISE

REGULATIONS

OTHERS

This is the value that measured on measuring board with capacitor of 22mF at 150mm

from output terminal.

Measured by 20MHz oscilloscope or Ripple-Noise meter (Equivalent to KEISOKU-GIKEN:

RM103).

Drift is the change in DC output for an eight hour period after a half-hour warm-up at

25C, with the input voltage held constant at the rated input/output.

Derating is required.

LFA-6

LED会自动熄灭让后又自动亮？: 同一电源同时给三个LED供电，并联连接，这三个LED灯总是过几分钟自动熄灭，然后再过几分钟又自动亮起...; 喜鹊王子电源技术

C程序优化的问题: 本帖最后由 dontium 于 2015-1-23 13:27 编辑我最近写好了一个工程，程序...; eeworld000 模拟与混合信号

晒WEBENCH设计的过程+3.3V/3A 5V/3A 2.5V/3A输出转换电路: 输入：7到12V 输出 3.3V/3A 5V/3A 2.5V/3A输出转换电路设计步骤第一步，输...; youzizhile 模拟与混合信号

STC12C5A60S2单片机的数码相框: 用STC12C5A60S2单片机做的简易数码相框，给大家参考下吧！需要的拿去！还有...; liuyongliuyong 51单片机

软件测试经典资料大推荐（二十八）--性能测试进阶指南: 软件测试经典资料大推荐（二十八） -- 性能测试进阶指南程序员之间流传着这样一句顺口溜...; tiankai001 下载中心专版

RK3568J“鸿蒙系统”正式发布，让您的产品开发更快速、更简单！: 本文主要介绍瑞芯微RK3568J的OpenHarmony系统演示，开发环境如下： OpenH...; 别打牛牛 ARM技术

华为王军：全球缺的是能把智能化做好的基础供应商

华为智能汽车解决方案事业部（BU）总裁王军本月接受《财经》专访时表示，全球和中国都不缺车企，缺的是智能网联电动车领域的基础供应商。他针对对当下造车热潮，深入剖析了华为“造车”的战略出发点、取舍逻辑、过程选择，并给出了他的系统思考。本周一，华为再度发布声明重申不造车，称“华为不造车。这一长期战略在 2018 年就已明确，没有任何改变。” 王军称，全球和中国都不缺车企，缺的是智能网联电动车...[详细]
Marvell 高调亮相2017年OCP峰会发布符合IEEE 802.1BR标准的数据中心解决方案

近期在美国举办的2017年OCP峰会上，Marvell展位人头攒动，活动精彩纷呈，吸引了业界极大的关注。下面就随网络通信小编一起来了解一下相关内容吧。近期在美国举办的2017年OCP峰会上，Marvell展位人头攒动，活动精彩纷呈，吸引了业界极大的关注。我们今年新推出的主题是“Marvell On the Move”，在OCP上，我们全面演示了Marvell针对未来数据中心推出的多种产品...[详细]
IP厂撷发推一站式智能服务平台

为因应物联网＋人工智能（AIoT）浪潮，IP厂撷发科技26日提出全球首创的系统设计制造运营模式，以特有的AI及电子层级（Electronic System Level，ESL）系统设计流程，建立能灵活运用的智能产业一站式服务平台，供客户完成多元的系统单芯片（SoC）及系统设计及制造服务。撷发表示，无论是半导体、面板、PCB或是物联网、自驾车、区块链，皆可为其扩增、优化产品，打造一个整合服务平台。...[详细]
贸泽电子荣获2014年度最受欢迎目录及网络分销商大奖

2014年12月15日－半导体与电子元器件业顶尖工程设计资源与授权分销商贸泽电子（Mouser Electronics）宣布其荣获电子产品世界颁发的2014年度最受欢迎目录及网络分销大奖，该奖项隶属编辑推荐奖成就奖，是历史最悠久的电子技术评选活动之一。广大工程师网友以及专家评审组就企业的服务质量、知名度与行业内影响力进行全方位评估，综合考虑了企业业绩表现与发展潜力，经由长达4个月的层层遴选，...[详细]
飞思卡尔QorIQ T4240处理器现已提供AltiVec软件库

新一代AltiVec引擎通过172 GFLOPS矢量处理提高代码性能，面向嵌入式计算应用 2013年6月18日，巴黎（2013巴黎国际航空展）讯 – 飞思卡尔半导体(NYSE:FSL)的旗舰产品QorIQ T4240通信处理器开始采用由 Mentor Graphics Corporation提供的AltiVec软件库。该信号处理库在新一代AltiVec引擎上运行，使客户能够实现飞思卡尔QorI...[详细]
在模拟设备中EMC如何选择合适的模拟器件？

为了防止解调，模拟电路处于干扰环境中时需保持线性和稳定，尤其是反馈回路，更需在宽频带范围内处于线性及稳定状态，这就常常需要对容性负载进行缓冲，同时用一个小串联电阻（约为500）和一个大约5PF的积分反馈电容串联。这是由于大多数模拟设备的抗扰度问题是由射频解调引起的。运放每个管脚都对射频干扰十分敏感，这与所使用的反馈线路无关，所有半导体对射频都有解调作用，但在模拟电路上的问题更严重。　　进行稳定度...[详细]
变频器对普通异步电动机的影响

1、普通异步电动机的效率和温升的问题。不论哪种形式的变频器，在运行中均产生不同程度的谐波电压和谐波电流，使普通异步电动机在非正弦电压、电流下运行。其中，高次谐波对普通异步电动机的运行效率和温升影响最大。高次谐波会引起普通异步电动机定子铜耗、转子铜(铝)耗、铁耗及附加损耗的增加，最为显著的是转子铜(铝)耗。因为普通异步电动机是以接近于基波频率所对应的同步转速旋转的，因此，高次谐波电压以较大的...[详细]
基于单片机的电动汽车电池智能快速充电器的设计

　　1 引言　　电池是电动汽车的关键动力输出单位，在铅酸蓄电池，镍镉电池，镍氢电池，锂电池和燃料电池等几种常用电池中，因为具有能量比大、重量轻、温度特性好，污染低，记忆效果不明显等特点，铅酸蓄电池、镍氢电池在电动汽车中使用很普遍。然而由于充电方法的不正确.造成充电电池的使用寿命远远低于规定的寿命。也就是说很多电池不是被用坏的而是被充坏的，可见充电器的好坏对电池寿命有很大的影响。基于此。本文提出一...[详细]
中国数字医疗被持续看好，这三个领域将在未来获益最大

中国的数字科技市场，几乎由移动技术、社交媒体、电子商务三分天下。医疗健康行业则显得不够“摩登”，数字化程度一直较为落后。新技术对于医疗板块来说的确是个大挑战，但也同样预示着一种巨大机会——用创新的、个性化的方式来治疗患者。当今，中国人对数字科技的接受速度可以说是相当之快，新一代消费者的行为和生活方式，都因此受到巨大影响，医疗行业在也正在创新脚步。2016年上半年，数字医疗领域的私人投资达到...[详细]
实现更快自动对焦，豪威科技推全新5000万像素图像传感器

近日豪威科技（OmniVision Technologies）宣布了全新的OV50A图像传感器，拥有5000万像素的解析力，单像素大小达到了1.0μm。据悉，OV50A图像传感器是一款5000万像素（MP）的图像传感器，具有1.0微米像素尺寸，选择性转换增益和1 / 1.5英寸光学格式，具有四相检测（QPD）自动对焦技术和片上可重铺马赛克。QPD可在传感器整个图像阵列上实现2x2相位检测自...[详细]
苹果放出系统更新全家桶正式版+测试版全都有

新浪手机讯 7月19日上午消息，苹果公司今日发布旗下多款产品的系统更新，涵盖iOS、OS X、tvOS、以及watch OS四大系统正式版，以及这些系统的开发者测试版。　　这次更新可说是苹果的“全家桶”。　　正式版阵营：修复bug为主　　首先是iOS 9.3.3 正式版，其实这个版本从5月至今发布多个测试版，今天终于有正式版放出。它并没有新功能或界面变化，只是修复bug和优化...[详细]
总投资9亿元台湾晶微半导体科技园落户宿迁

8月7日上午，由台湾晶微国际科技有限公司投资的晶微半导体科技园项目签约仪式在宿城区举行。该公司董事长张添祥，宿城区领导卞建军、高玉华、朱振方，以及该公司董事会相关领导参加了仪式。签约仪式前，宿城区委副书记、区长卞建军代表区委、区政府对张添祥一行的到来表示诚挚的欢迎。卞建军表示，宿城区将以此次项目签约为契机，本着精诚合作、互利共赢的原则，为项目建设提供全程优质服务，全力营造项目快速建设的一流环...[详细]
怎样开空调最省电？聊聊空调各种省电大法

夏日炎炎，空调自然少不了。那么怎样开空调省电几乎是每个夏天都会被提起的话题。 26 度最省电? 空调开 26 度最省电这个说法相信大家没少听说，不论是空调说明书上的建议，还是空调的初始温度，还有各种“专家”的轮番洗脑，让我们理所当然的接受了开 26 度最省电这个说法。实际上，空调温度设定得越高肯定越省电，不开空调还更省电呢!这个大家应该都明白，那为什么还是经常吹捧空调 26 度最省电这一...[详细]
黑莓成功完成向车联网及自动驾驶技术领域转型

据外媒报道，黑莓或许不再是智能手机市场内的领军人物，但该公司却成功地完成了向自动驾驶车辆及网络安全的转型。该公司首席执行官John Chen表示，公司的重心将放在车联网市场，有助于提升其销售收入。 Chen表示，相较于一年前，其车联网业务的销售收入增幅高达23%。此外，黑莓还利用其QNX装置来研发自动驾驶技术及车载信息娱乐系统。该公司还与福特、现代等全球知名车企以及安波福、电装等全...[详细]
第六节：STM32基于HAL库的IIC通信

前言: IIC协议简介维基百科的解释如下: I2C（Inter-Integrated Circuit）字面上的意思是积体电路之间，它其实是I2C Bus简称，所以中文应该叫集成电路总线，它是一种串行通讯汇流排，使用多主从架构，由飞利浦公司在1980年代为了让主机板、嵌入式系统或手机用以连接低速周边装置而发展。I2C的正确读法为“I平方C”（ I-squared-C ），而“I二C”（ I-tw...[详细]