94A1D-G28-G12L,94A1D-G28-G12L pdf中文资料,94A1D-G28-G12L引脚图,94A1D-G28-G12L电路-Datasheet-电子工程世界

文档预览

VE S CO

AV R M

AI SIO PL

LA N IA

BL S NT

Features

■

Available in a variety of pin-out

conﬁgurations

■

Virtually inﬁnite electrical circuit isolation

■

Metal or plastic shaft options

■

RoHS compliant versions available*

Non-RoHS models are currently

available, but not recommended

for new designs. See

Product

Obsolescence Memo

for details.

Model 91, 92, 93, 94 & 95 - 5/8 ” Square Single-Turn Panel Control

Initial Electrical Characteristics

Conductive Plastic Element

Cermet Element

Standard Resistance Range

Linear Tapers (A, B, E, & H) .........................(B & E) 1 K ohms to 1 megohm ......................... (A & H) 100 ohms to 1 megohm

Audio Tapers (C, D, F, G, S, & T) .................(D,G,S, & T) 1 K ohms to 1 megohm ................. (C & F) 1 K ohms to 1 megohm

Total Resistance Tolerance ...............................10 % or 20 % .................................................... 5% or 10%

Independent Linearity .......................................±5 % .................................................................. ±5 %

Absolute Minimum Resistance .........................2 ohms maximum .............................................. 2 ohms maximum

Effective Electrical Angle ..................................(Linear tapers) 240 ° ± 5 °.................................. (Linear tapers) 240 ° ± 6 °

(Audio tapers) 225 ° ± 5 ° .................................. (Audio tapers) 225 ° ± 6 °

Contact Resistance Variation ...........................±1 % .................................................................. ±1 % or 3 ohms (whichever is greater)

Dielectric Withstanding Voltage (MIL-STD-202, Method 301)

Sea Level ....................................................1,500 VAC minimum .......................................... 1,500 VAC minimum

70,000 Feet .................................................500 VAC minimum ............................................. 500 VAC minimum

Insulation Resistance (500 VDC) ......................1,000 megohms minimum ................................. 1,000 megohms minimum

Power Rating (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less)

+70 °C Single Section Assembly ................(Linear tapers) 0.5 watt ...................................... (Linear tapers) 2 watts

(Audio tapers) 0.25 watt .................................... (Audio tapers) 1 watt

+70 °C Multiple Section Assembly .............(Linear tapers) 0.5 watt/section ......................... (Linear tapers) 1 watt/section

(Audio tapers) 0.25 watt/section ....................... (Audio tapers) 0.5 watt/section

+125 °C .......................................................0 watt................................................................. 0 watt

Theoretical Resolution ......................................Essentially inﬁnite .............................................. Essentially inﬁnite

Environmental Characteristics

Operating Temperature Range .......................... -40 °C to +125 °C ................................................-40 °C to +125 °C

Storage Temperature Range.............................. -55 °C to +125 °C ................................................-55 °C to +125 °C

Temperature Coefﬁcient Over Storage

Temperature Range.......................................... ±1,000 ppm/°C.....................................................±150 ppm/°C

Vibration (Single Section) ................................... 15 G ......................................................................15 G

Total Resistance Shift ................................... ±2 % maximum....................................................±2 % maximum

Voltage Ratio Shift ........................................ ±5 % maximum....................................................±5 % maximum

Shock (Single Section) ....................................... 30 G ......................................................................30 G

Total Resistance Shift ................................... ±2 % maximum....................................................±2 % maximum

Voltage Ratio Shift ........................................ ±5 % maximum....................................................±5 % maximum

Load Life ............................................................ 1,000 hours ..........................................................1,000 hours

Total Resistance Shift ................................... ±10 % maximum..................................................±5 % maximum

Rotational Life (No Load) ................................... 100,000 cycles .....................................................100,000 cycles

Total Resistance Shift ................................... (Linear tapers) 10 ohms or ±15 % TRS max. ......(All tapers) ±5 % TRS max.

(whichever is greater)

(Audio tapers) ±20 % maximum

Contact Resistance Variation

@ 50,000 cycles ........................................... (Linear tapers) ±2 %.............................................±2 %

(Audio tapers) ±3 % .............................................±3 %

Moisture Resistance (MIL-STD-202, Method 103, Condition B)

Total Resistance Shift ................................... (Linear tapers) ±10 % TRS maximum .................(All tapers) ±5 % TRS maximum

(Audio tapers) ±20 % TRS maximum

Insulation Resistance (500 VDC) .................. 100 megohms minimum ......................................100 megohms minimum

IP Rating ............................................................ IP 40 .....................................................................IP 40

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

Model 91, 92, 93, 94 & 95 - 5/8 ” Square Single-Turn Panel Control

Mechanical Characteristics

Stop Strength (1/4 ” D shaft) .............................................................................................................................................45.19 N-cm (4 lb.-in.)

(1/8 ” D shaft) .............................................................................................................................................33.89 N-cm (3 lb.-in.)

Mechanical Angle.................................................................................................................................................................................300 ° ±5 °

Torque

Starting ........................................................................................................................................... 0.3 max. above average running torque

Running Torque

Single or Dual Section (A & R Bushings) .................................................................................................. 0.21 to 1.06 N-cm (0.3 to 1.5 oz.-in.)

Single or Dual Section (C & U Bushings) .................................................................................................. 0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.)

Mounting .............................................................................................................................................1.7-2.0 N-m (15-18 lb.-in.) maximum

Variation ...................................................................................................................... 0.35 N-cm (0.5 oz.-in.) maximum in 45 ° shaft travel

Weight (Single Section, Metal Bushing)...............................................................................................................................12.7 grams nominal

(Each Additional Section) ....................................................................................................................................................4 grams nominal

Terminals .................................................................................................................................Printed circuit terminals, J-Hooks or solder lugs

Soldering Condition ...........................................Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ” wire diameter.

Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean ﬂux.

Marking ..................................................................................Manufacturer’s trademark, date code, resistance, manufacturer’s part number

Ganging (Multiple Section Potentiometers).............................................................................................................................2 cups maximum

Hardware ...................One lockwasher and one mounting nut is shipped with each potentiometer, except where noted in the part number.

NOTE:

Performance speciﬁcations do not apply to units subjected to printed circuit board cleaning procedures.

room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

Model 91, 92, 93, 94 & 95 - 5/8 ” Square Single-Turn Panel Control

Product Dimensions

Model 91 PC Pin Terminals, In-Line

22.86 ± 0.43

(.900 ± .017)

MOUNTING

SURFACE

12.70 ± .229

(.500 ± .009)

0.79 ± .025

(.031 ± .010)

DIA.

13.72 ± 0.38

(.540 ± .015)

1.37 ± 0.08

(.054 ± .003)

2.36 ± 0.08

(.093 ± .003)

15.88

(.625)

7.92

(.312)

Model 92 J-Hooked

Terminals, In-Line

.79

(.031) 2 PLCS.

3 2 1

.254

(.010)

GAP

SEE

HOW TO ORDER

CHART FOR

BUSHING OPTIONS.

10.16 ± 0.30

(.400 ± .012)

11.05 ± 0.20

(.435 ± .008)

SEE

FOR SHAFT

OPTIONS.

1.19

(.047)

“A” STYLE

A.R. LUG

9.53

(.375)

15.29 ± 0.56

(.602 ± .022)

5.08

(.20)

1.52

(.06)

2.54

(.100)

2.54

(.100)

Model 94 J-Hooked

Terminals, "L" Pattern

0.76 ± 0.05

(.030 ± .002)

TYP.

Model 93 PC Pin Terminals, "L" Pattern

22.86 ± 0.43

(.900 ± .017)

MOUNTING

SURFACE

12.70 ± .229

(.500 ± .009)

0.79 ± .025

(.031 ± .010)

DIA.

13.72 ± 0.38

(.540 ± .015)

1.37 ± 0.08

(.054 ± .003)

2.36 ± 0.08

(.093 ± .003)

15.88

(.625)

7.92

(.312)

3 2 1

1.52

(.06)

GAP

.81

(.032)

R. MAX.

5.33 ± .76

(.21 ± .03)

3.81

(.150)

MAX. TYP.

SEE

HOW TO ORDER

CHART FOR

BUSHING OPTIONS.

DIA.

0.81

TYP.

(.032)

10.16 ± 0.30

(.400 ± .012)

5.08 ± 0.38

(.200 ± .015)

11.05 ± 0.20

(.435 ± .008)

SEE

FOR SHAFT

OPTIONS.

1.19

(.047)

“A” STYLE

A.R. LUG

9.53

(.375)

12.7 ± 1.02

(.500 ± .040)

Shaft Flat Orientation

2.54

(.100)

2.54

(.100)

120 ° ± 5 ° STD.

FLAT ORIENTATION

(SHAFT AT CCW END)

0.76 ± 0.05

(.030 ± .002)

TYP.

CCW

POTENTIOMETER

Model 95 Solder Lug Terminals, "Triangular" Pattern

5.08 ± 1.02

(.200 ± .040)

4.45 ± .38

(.175 ± .015)

10.16

(.40)

5.59 ± .20

(.220 ± .008)

4.45 ± .38

(.175 ± .015)

2.54

(.100)

2.54

(.100)

2.03

(.080)

3 PLCS.

.41

(.016)

2.29

1.02

(.040) WIDE X (.090) LONG

3 PLCS.

.381

TOLERANCES EXCEPT AS SHOWN: DECIMAL .XXX ± (.015 )FRACTION ± 1/64

9.65

.XX ±

ANGLE ±5 °

(.38)

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

Model 91, 92, 93, 94 & 95 - 5/8 ” Square Single-Turn Panel Control

Product Dimensions

Plastic

Shaft

Styles

SHAFT TYPE "B"

(USES BUSHING A)

1.60+.38/-.00

(.063+.015/-.000)

6.32+.000/-.152

(.249+.000/.006)

DIA.

SHAFT TYPE "D"

(USES BUSHING C)

13.16+.00/-.15

DIA.

(.1245+.000/-.006)

SHAFT TYPE "T"

(USES BUSHING U)

1.50 ± .25

(0.06 ± .001)

.79

(0.03)

STD. LENGTHS:

16.0

(.630)

22.0

(.866)

1.19

(.047)

STD. LENGTHS:

15.88

19.05

(.625) (.750)

12.70

(.500)

22.23

(.875)

STD. LENGTHS:

12.70

15.88

19.05

(.500) (.625) (.750)

3.988 +0.000/-0.051

(.157 +.000/-.002)

DIA.

SHAFT TYPE "C"

(USES BUSHING A)

11.18 ± .38

(.440 ± .015)

SHAFT TYPE "R"

(USES BUSHING R)

1.80 ± .25

(0.07 ± .001)

5.994 +0.000/-0.051

(.236 +.000/-.002)

DIA.

1.00

(.04)

STD. LENGTHS:

16.0

(.630)

22.0

(.866)

SHAFT TYPE "W"

(USES BUSHING A)

14.27 ± .25

(.562 ± .010)

5.49

(.216)

STD. LENGTHS:

19.05

22.23

(.750) (.875)

6.30+.000/-.152

(.248+.000/.006)

DIA.

48 TOOTH

6.31+.025/-.051

(.2485+.001/.002)

DIA.

STD. LENGTHS:

25.40

(1.00)

Metal

Shaft

Styles

SHAFT TYPE "A"

(USES BUSHING A)

6.32+.010/-.025

(.2490+.0004/.0010)

DIA

SHAFT TYPE "H"

(USES BUSHING A)

“F” ± .38

(“F” ± .015)

6.32+.010/-.025

(.2490+.0004/.0010)

DIA

5.486 ± .051

(.216 ± .002)

25.4

(1.000)

STD. LENGTHS:

19.05

(.750)

22.23

(.875)

SHAFT TYPE "S"

(USES BUSHING R)

“F” ± .381

(“F” ± .015)

6.000+.000/-.035

(.2362+.0000/.0014)

DIA

3.988 ± .076

(.157 ± .003)

STD. LENGTHS:

19.05

(.750)

22.23

(.875)

STD. LENGTHS:

12.70

(.500)

15.88

(.625)

19.05

(.750)

22.23

(.875)

FLAT LENGTH “F”:

9.98

(.393)

12.98

(.511)

SHAFT TYPE "E"

(USES BUSHING C)

0.79 ± 0.25

(.031 ± .010)

3.16

(.1245)

DIA

7.95

(.313)

11.13

(.438)

SHAFT TYPE "J"

(USES BUSHING R)

1.80 ± 0.25

(.071 ± .010)

6.00+.000/-.035

(.2362+.0000/.0010)

DIA

SHAFT TYPE "V"

(USES BUSHING U)

1.50 ± 0.25

(.059 ± .010)

3.99+.000/-.035

(.1571+.0000/.0010)

DIA

0.79

(.031)

STD. LENGTHS:

12.0

(.500)

16.0

(.625)

19.0

(.750)

1.00 ± 0.13

(.039 ± .054)

STD. LENGTHS:

0.79 ± 0.13

(.031 ± .054)

STD. LENGTHS:

19.05

(.750)

22.23

(.875)

SHAFT TYPE "G"

(USES BUSHING A)

1.60+.38/-.00

(.063+.015/-.000)

6.32+.010/-.025

(.2490+.0004/.0010)

DIA.

1.194

(.047)

STD. LENGTHS:

15.88

19.05

(.625) (.750)

16.0

(.630)

22.0

(.866)

TOLERANCES EXCEPT AS SHOWN: .XX = ±

.02

(.050)

.005

.XXX = ±

(.127)

.0005

.XXXX = ±

(.0127)

12.70

(.500)

22.23

(.875)

DIMENSIONS:

(INCHES)

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

How to Order Model 91, 92, 93, 94 & 95 Panel Controls

A15

Part number for multiple section potentiometers must have

a taper and resistance value for each section.

ANTI-ROTATION LUG

Single .305 ” (7.8 mm) R,

90 °CW

No Lug

# SECTIONS

1 Single

2 Dual

SHAFT

LENGTH

(FMS)

Code Description

1/2 ”L

5/8 ”L

3/4 ”L

7/8 ”L

1 ”L

METRIC

AVAILABLE

ONLY IN

BUSHING

Code

A, C

R, U

ELEMENT TAPER

TYPE/TOLERANCE

(A)

Linear Cermet ±10 %

(H)

Linear Cermet ±5 %

RoHS IDENTIFIER

Compliant

Blank Non-Compliant

Non-compliant versions are

available, but not recommended

for new designs.

16 mmL

22 mmL

BUSHING

Metal Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L

Metal Plain 1/4 ” (6.35 mm) D x 1/4 ” (6.35 mm) L

Metal Plain 10 mm D x 9 mm L

Metal Plain 7 mm D x 9 mm L

MODEL

Single-Turn, In-Line PC Pins

Single-Turn, In-Line J-Hooks

Single-Turn, L-Pattern PC Pins

Single-Turn, L-Pattern J-Hooks

Single-Turn, Triangle-Pattern Solder Lugs

(B)

(E)

AVAILABLE ONLY IN

LENGTHS

BUSHINGS

(CODE)

16, 20, 24, 28

24, 28

16, 20, 24

Metric 16, 22

16, 20, 24

16, 20, 24, 28

24, 28

Metric 16, 22

SHAFT TYPE

Plastic Single Slotted 1/4 " (6.35 mm) D

Plastic Single Flatted 1/4" (6.35 mm) D

Plastic Single Plain 1/8" (3.18 mm) D

Plastic Single Slotted 6 mm D

Plastic Single Slotted 4 mm D

Plastic Single Knurled 1/4" (6.35 mm) D

Metal Single Plain 1/4" (6.35 mm) D

Metal Single Slotted 1/8" (3.18 mm) D

Metal Single Slotted 1/4" (6.35 mm) D

Metal Single Flatted 1/4" (6.35 mm) D

Metal Single Slotted 6 mm D

Metal Single Flatted 6 mm D

Metal Single Slotted 4 mm D

(C)

(D)

(F)

(G)

(S)

(T)

RESISTANCE CODE

VALUE IN OHMS

(05) - 100

(30) - 15 K

(28) - 150

(16) - 20 K

(06) - 200

(17) - 25 K

(07) - 250

(18) - 50 K

(08) - 500

(20) - 100 K

(10) - 1 K

(21) - 200 K

(11) - 2 K

(22) - 250 K

(12) - 2.5 K (23) - 500 K

(13) - 5 K

(25) - 1 M

(15) - 10 K

Linear C-P ±20 %

(10) - 1 K

(18) - 50 K

Linear C-P ±10 %

(12) - 2.5 K

(20) - 100 K

(13) - 5 K

(22) - 250 K

(15) - 10 K

(23) - 500 K

(16) - 20 K (25) - 1 M

(17) - 25 K

CW Audio Cermet ±10 %

(10) - 1 K

(18) - 50 K

CW Audio C-P ±20 %

(12) - 2.5 K (20) - 100 K

CCW Audio Cermet ±10 % (13) - 5 K

(22) - 250 K

CCW Audio C-P ±20 %

(15) - 10 K (23) - 500 K

CW Audio C-P ±10 %

(17) - 25 K (25) - 1 M

CCW Audio C-P ± 10 %

Boldface features are Bourns standard options.

All others are available with higher minimum order

quantities.

REV. 11/11

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

makefile的有关目标的问题？: 我拿到一个makefile_A，看到里面有一下目标。 all: os app 但是这个makefil...; seairensheng 嵌入式系统

Wince 内存管理: 各位高手:我用wince5.0测试程序，在程序中用new分配2M内存，然后delete 。然后退出程...; wang_kai_kai WindowsCE

TB1227: TB1227芯片的简单介绍 TB1227 ...; rain 嵌入式系统

设置MSP430串口波特率的技巧: 给定一个BRCLK时钟源，波特率用来决定需要分频的因子N： N = fBRCLK/B...; fish001 微控制器 MCU

IAR烧写MSP430失败的解决方法: 1.失败状况如下: 在驱动安装没错，（板子插进去usb自动安装完成）: config...; 灞波儿奔微控制器 MCU

MPU姿态传感器INT、MOSI、MISO、SCK、NCS这五个脚的作用是？波形对不对: MPU姿态传感器INT、MOSI、MISO、SCK、NCS这五个脚的作用是？波形对不对 ...; QWE4562009 测试/测量

车用半导体潜力巨大，联发科能否把握机遇？

以电动化、智能化、网联化、共享化为趋势的汽车“新四化”，正催生“马路上的革命”，在此过程中，汽车电子零部件成本在逐年上升。根据市场分析机构德勤的数据，2013年平均一台汽车的半导体成本为213美元，而到了2020年这个数据将达到600美元以上。巨大的市场潜力吸引众多互联网和半导体厂商选择“跨界”，包括主做自动驾驶的谷歌百度，主做车用服务系统的阿里腾讯，当然还有立志成为新tier 1厂商的华...[详细]
keil、IAR和GCCAVR对FLASH和EEPROM的操作

1. keil for MSC51 关键字co de co de unsigned char array ={} 2. IAR for AVR(摘抄) FLASH常用类型的具体操作方法 (1) FLASH 区域数据存储。用关键字 __flash 控制来存放， __ flash 关键字写在数据类型前后效果一样 __flash unsigned char a;//定义一个变量存放在flash...[详细]
乐视发布国内首个《智能电视应用行业报告》

乐视近日发布《2014年度智能电视应用行业报告》。报告显示，随着智能电视的快速发展，大屏应用也迎来大规模爆发的机会。2014年是智能电视的爆发年，智能电视销量突破3000万，市场渗透率接近70%。70末及80后人群是电视应用下载量贡献的主力，占比约为70%；游戏类应用是最热门的智能电视应用类型，2014年下半年游戏类App下载量占比从Q1的25%提升至Q4的48%。2015年，智能电视市场渗透率...[详细]
集诸多优点PCB式汽车继电器市场继续扩大

汽车继电器大致分为插入式汽车继电器和PCB（印刷电路板）式汽车继电器两大类，其中插入式汽车继电器主要装配在中央控制盒中,配合线束使用，较PCB式而言，体积更大、载流更高、成本更高、但便于安装和更换；而PCB式汽车继电器更多地用于汽车电子模块中，较插入式而言，体积更小、与周边电子电路的集成化程度更高、成本更低。市场对汽车产品的要求使继电器朝小型化、智能化、大负载等方向发展。根据预测，...[详细]
苏宁张近东：凡是能接触到用户的点都可能变为渠道

近日，首届“互联网＋零售紫金峰会”在南京举行，此次峰会大咖云集，苏宁控股集团董事长张近东表示，渠道的定义已经发生了革命性变化。　　张近东表示，两年前，很多厂商找我们，想要把门店的商品放到网上去卖；而今天，很多互联网品牌更急切的希望进入我们的门店，来进行体验、展示和推广。年初推出了面向三四线城市和乡镇的苏宁易购直营店，虽然只有一百平米左右，但效率却十分惊人；上个月我们PPTV推出了一款PPO...[详细]
CANopen总线应用札记：关于通讯接口的针脚定义

我们都知道，现场总线常用SUB-D9作为通讯接口，工业以太网常用RJ45作为通讯接口。不过，个人认为这并不能说明RJ45功能比SUB-D9强，因为RJ45只有8根针脚，比SUB-D9少1根，如果我们把SUB-D9串口内的9根针脚都开发满，那么其功能没理由比RJ45弱。下面说个严肃的话题，不同厂家开发的CANopen设备，看起来都是SUB-D9接口，其实内部线路是完全不一样的，我们要认真核实，可别...[详细]
一款基于51单片机的简易示波器设计

随着电子通信以及教学事业的发展，示波器的应用越来越广泛，它在教学中所起到的作用越来越重要，示波器可以测量信号的幅度，频率以及波形等等，但是高精度的示波器非常昂贵，对于非盈利事业的教学组织来说无疑不合适，所以提出了一种以单片机为控制核心的简易示波器设计方案。它由前向控制部分，数据采集和存储部分，51单片机控制部分以及按键和MS12864R显示部分组成。 1 简易数字示波器的工作原理以及总体框架...[详细]
群联出货量大增，7月合并营收月增长21%

NAND Flash控制芯片厂群联公布7月合并营收40.63亿元新台币（单位下同），月成长21.51%，年增13.81%。累计1-7月合并营收231.89亿元，与去年同期持平。单月营收表现稳定上扬，主因全球客户因应旺季陆续备货库存，对下半年需求逐步成长看法不变。群联指出，各应用总出货量与去年同期相比，7月份存储器模块成长57%，SSD控制芯片成长86%，SSD与eMMC成品成长116%，而...[详细]
ARM汇编编程基础之三-基本寻址方式与基本指令

要想进行ARM的汇编编程，首当其冲要知道最基本、最常用的指令，而要了解指令则必须要了解寻址方式。所以本文将聚焦在基本寻址方式和基本指令。首先，来看一看我们已经见过的2条指令：MOV pc, lr; BL addsub 最简单的汇编指令格式是操作码（例如：MOV、BL）和操作数（例如：pc, lr, addsub）。操作码易于理解，例如MOV表示将某个值从一处传送到另一处，BL表示跳转到某处；...[详细]
第三届国产嵌入式操作系统技术与产业发展论坛圆满结束

“第三届国产嵌入式操作系统技术与产业发展论坛”圆满结束 2021年是中国经历了前所未有的疫情之后，开始快马加鞭、努力奋斗的一年。复杂的国际政经环境依旧，国产芯片和国产操作系统受到国内产业界、学术研究机构和政府相关部门高度重视，产业发展势头迅猛，投资热情高涨。伴随人工智能快速发展，嵌入式操作系统在智能系统中发挥越来越大的作用，为了应对日益复杂和不确定的外部环境，国产智能系统更离不开国产嵌入式操...[详细]
一个电极，两种功效，脑植入物成功控制癫痫和强迫症

美国俄勒冈健康与科学大学（OHSU）的一名女患者成为世界上第一个受益于植入式大脑刺激器的患者。这种刺激器通过有效控制，改变了两种让她备受困扰的疾病症状：癫痫发作和强迫症。这项发表于《神经元》杂志的案例研究，描述了一种反应性神经刺激系统（RNS）的交互式编程，该系统可成功地控制曾经扰乱这名患者生活的疾病。神经外科教授艾哈迈德·拉斯兰博士演示了患者艾梅柏·皮尔森的脑植入物。图片来源：俄勒冈...[详细]
stm32 SPI NSS引脚的使用配置

STM的NSS引脚首先我们说该引脚有两个电平需要注意，一个是与NSS引脚连接的外部电平，一个是NSS引脚的内部电平。然后我们知道在SPI通信的时候master必须在NSS引脚的内部电平为高电平时才得以进行通信，slaver在NSS引脚的内部电平为低电平时才可以通信。这是前提条件。我们知道NSS引脚电平的管理有两种方式，一个是软件管理和硬件管理。但当为硬件管理时(SSM=0)，N...[详细]
虚拟电厂怎么做？南网区域双管齐下破解需求响应难题，规则解析及启示

中国储能网讯：新能源装机比例及用户侧间歇性负荷的进一步增长，对电力系统灵活调节能力提出了越来越高的要求，传统“源随荷动”的运行模式亟需向“源荷互动”转变。挖掘负荷侧的灵活性资源，成为提升电力系统调节能力和保障电力供应的重要手段。国家碳达峰、碳中和“1+N”政策体系相关文件，以及《“十四五”现代能源体系规划》均提出对电力需求侧响应能力的要求，本文全面解读南方区域需求响应规则体系及意义，提出对需求...[详细]
OPPO Reno4真机谍照：后置摄像头造型独特

2019年底OPPO发布了Reno3系列手机，时隔半年，OPPO Reno4已经浮出水面。近日微博上曝光了疑似是OPPO Reno4的真机碟照，该机主打“超级夜景视频，拍出新夜色”。曝光的两款手机分别是纯白、纯黑色版本，只展示了手机的背面，从谍照来看，该机疑似后置四颗摄像头，摄像头的布局很奇特，每颗摄像头都单独放置，而且明显凸起于机身。　　另外，手机背面两侧有明显的弧形处...[详细]
STM32之I2C 学习笔记

一、基本概念（1）I2C是两线式串行总线,由数据线SDA和时钟SCL构成的串行总线，可发送和接收数据。在CPU与被控IC之间、IC与IC之间进行双向传送，高速IIC总线一般可达400kbps以上。（2）IIC是半双工通信方式，也就是说它既可以接收也可以发送，但是由于它只有一根数据线，所以接收和发送不能同时进行。二、I2C协议（1）空闲状态：数据线SDA和时钟SCL线都处于高电平。...[详细]