西门子触摸屏电路基础

西门子触摸屏黑屏不加电

西门子触摸屏黑屏维修Smart1000iev3，用灯光照也没有任何图像。

打开后发现这个降压芯片已经损坏了。

在显微镜下可以看到明显烧坏的痕迹。

一般是由于TL431损坏，导至各路输出电压均不正常。

更换降压芯片和TL431后各路电压也就都正常了。

西门子触摸屏上电黑屏

24V转5V的电路出问题，首要检查降压块。

再者就是光耦和电源芯片要做为检测对象。

西门子触摸屏上电黑屏

不加电一般是电源管理芯片出问题了。

常用的芯片引脚及功能定义表

序号	丝印	型号	备注
1	40210	TPS40210	电压的 4.5V 至 52V 宽输入范围电流模式升压控制器
2	Y13	BZX84C36LT1G	250毫瓦；齐纳二极管稳压器，36V SOT23
3	9AB	BC856BMTF	双极晶体管 PNP 65V 100mA SOT23
4	1Bt或3Bt	BC846BW	NPN三极管 SOT23
5	Z7	BZX84C8V2	8.2V贴片稳压二极管 SOT23
6	AF3	SN74AHC1G14DCKR	具有施密特触发输入的单路 2V 至 5.5V 反相器
7	ABAA	MAX809M	复位电路 SOT23
8	1A 1B 1C	BC846A BC846B BC846C	NPN, 65V, 0.1A, SOT23
9	B1C	MBRS1100T3G	100V 1A肖特基二极管
10	TL431I	TL431IDR	可调精密并联稳压器芯片
11	217A	IL217AT	贴片光耦
12	19N10L	19N10L	N沟 MOS场效应管
13	10P6F6	10P6F6	P沟道 10A 60V MOS场效应管
14	VP1176	SN65HVD1176DR	PROFIBUS RS-485 收发器
15	L1117	L1117	液晶屏贴片稳压管
16	QVB	TLV62065	开关稳压器芯片
17	G5N	SGM61030	电源管理芯片
18	G101STN01.0	S513	10.1寸液晶屏

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智能工控 » 西门子触摸屏电路基础

普通 https://www.harvard.edu/

2025年3月14日 at 上午6:18

# Harvard University: A Legacy of Excellence and Innovation

## A Brief History of Harvard University

Founded in 1636, **Harvard University** is the oldest and one of the most prestigious higher education institutions in the United States. Located in Cambridge, Massachusetts, Harvard has built a global reputation for academic excellence, groundbreaking research, and influential alumni. From its humble beginnings as a small college established to educate clergy, it has evolved into a world-leading university that shapes the future across various disciplines.

## Harvard’s Impact on Education and Research

Harvard is synonymous with **innovation and intellectual leadership**. The university boasts:

– **12 degree-granting schools**, including the renowned **Harvard Business School**, **Harvard Law School**, and **Harvard Medical School**.
– **A faculty of world-class scholars**, many of whom are Nobel laureates, Pulitzer Prize winners, and pioneers in their fields.
– **Cutting-edge research**, with Harvard leading initiatives in artificial intelligence, public health, climate change, and more.

Harvard’s contribution to research is immense, with billions of dollars allocated to scientific discoveries and technological advancements each year.

## Notable Alumni: The Leaders of Today and Tomorrow

Harvard has produced some of the **most influential figures** in history, spanning politics, business, entertainment, and science. Among them are:

– **Barack Obama & John F. Kennedy** – Former U.S. Presidents
– **Mark Zuckerberg & Bill Gates** – Tech visionaries (though Gates did not graduate)
– **Natalie Portman & Matt Damon** – Hollywood icons
– **Malala Yousafzai** – Nobel Prize-winning activist

The university continues to cultivate future leaders who shape industries and drive global progress.

## Harvard’s Stunning Campus and Iconic Library

Harvard’s campus is a blend of **historical charm and modern innovation**. With over **200 buildings**, it features:

– The **Harvard Yard**, home to the iconic **John Harvard Statue** (and the famous “three lies” legend).
– The **Widener Library**, one of the largest university libraries in the world, housing **over 20 million volumes**.
– State-of-the-art research centers, museums, and performing arts venues.

## Harvard Traditions and Student Life

Harvard offers a **rich student experience**, blending academics with vibrant traditions, including:

– **Housing system:** Students live in one of 12 residential houses, fostering a strong sense of community.
– **Annual Primal Scream:** A unique tradition where students de-stress by running through Harvard Yard before finals!
– **The Harvard-Yale Game:** A historic football rivalry that unites alumni and students.

With over **450 student organizations**, Harvard students engage in a diverse range of extracurricular activities, from entrepreneurship to performing arts.

## Harvard’s Global Influence

Beyond academics, Harvard drives change in **global policy, economics, and technology**. The university’s research impacts healthcare, sustainability, and artificial intelligence, with partnerships across industries worldwide. **Harvard’s endowment**, the largest of any university, allows it to fund scholarships, research, and public initiatives, ensuring a legacy of impact for generations.

## Conclusion

Harvard University is more than just a school—it’s a **symbol of excellence, innovation, and leadership**. Its **centuries-old traditions, groundbreaking discoveries, and transformative education** make it one of the most influential institutions in the world. Whether through its distinguished alumni, pioneering research, or vibrant student life, Harvard continues to shape the future in profound ways.

Would you like to join the ranks of Harvard’s legendary scholars? The journey starts with a dream—and an application!

https://www.harvard.edu/

231 评论

普通 Fortune rabbit ao vivo

2025年3月15日 at 上午5:40 登录以回复

Bem embalado. Surpreendeu pela qualidade.
普通 Jerrod Bravo

2025年3月14日 at 上午11:43 登录以回复

Heya! Enthused by the vibe—it’s exceptional. In fact, the concept brings a stunning touch to the overall vibe. Great effort!
普通 https://www.harvard.edu/

2025年3月14日 at 上午6:18 登录以回复

# Harvard University: A Legacy of Excellence and Innovation

## A Brief History of Harvard University

Founded in 1636, **Harvard University** is the oldest and one of the most prestigious higher education institutions in the United States. Located in Cambridge, Massachusetts, Harvard has built a global reputation for academic excellence, groundbreaking research, and influential alumni. From its humble beginnings as a small college established to educate clergy, it has evolved into a world-leading university that shapes the future across various disciplines.

## Harvard’s Impact on Education and Research

Harvard is synonymous with **innovation and intellectual leadership**. The university boasts:

– **12 degree-granting schools**, including the renowned **Harvard Business School**, **Harvard Law School**, and **Harvard Medical School**.
– **A faculty of world-class scholars**, many of whom are Nobel laureates, Pulitzer Prize winners, and pioneers in their fields.
– **Cutting-edge research**, with Harvard leading initiatives in artificial intelligence, public health, climate change, and more.

Harvard’s contribution to research is immense, with billions of dollars allocated to scientific discoveries and technological advancements each year.

## Notable Alumni: The Leaders of Today and Tomorrow

Harvard has produced some of the **most influential figures** in history, spanning politics, business, entertainment, and science. Among them are:

– **Barack Obama & John F. Kennedy** – Former U.S. Presidents
– **Mark Zuckerberg & Bill Gates** – Tech visionaries (though Gates did not graduate)
– **Natalie Portman & Matt Damon** – Hollywood icons
– **Malala Yousafzai** – Nobel Prize-winning activist

The university continues to cultivate future leaders who shape industries and drive global progress.

## Harvard’s Stunning Campus and Iconic Library

Harvard’s campus is a blend of **historical charm and modern innovation**. With over **200 buildings**, it features:

– The **Harvard Yard**, home to the iconic **John Harvard Statue** (and the famous “three lies” legend).
– The **Widener Library**, one of the largest university libraries in the world, housing **over 20 million volumes**.
– State-of-the-art research centers, museums, and performing arts venues.

## Harvard Traditions and Student Life

Harvard offers a **rich student experience**, blending academics with vibrant traditions, including:

– **Housing system:** Students live in one of 12 residential houses, fostering a strong sense of community.
– **Annual Primal Scream:** A unique tradition where students de-stress by running through Harvard Yard before finals!
– **The Harvard-Yale Game:** A historic football rivalry that unites alumni and students.

With over **450 student organizations**, Harvard students engage in a diverse range of extracurricular activities, from entrepreneurship to performing arts.

## Harvard’s Global Influence

Beyond academics, Harvard drives change in **global policy, economics, and technology**. The university’s research impacts healthcare, sustainability, and artificial intelligence, with partnerships across industries worldwide. **Harvard’s endowment**, the largest of any university, allows it to fund scholarships, research, and public initiatives, ensuring a legacy of impact for generations.

## Conclusion

Harvard University is more than just a school—it’s a **symbol of excellence, innovation, and leadership**. Its **centuries-old traditions, groundbreaking discoveries, and transformative education** make it one of the most influential institutions in the world. Whether through its distinguished alumni, pioneering research, or vibrant student life, Harvard continues to shape the future in profound ways.

Would you like to join the ranks of Harvard’s legendary scholars? The journey starts with a dream—and an application!

https://www.harvard.edu/
普通 pix my dollar

2025年3月14日 at 上午4:48 登录以回复

Aprovado. Superou expectativas.
普通 ibercaja empresas

2025年3月13日 at 上午8:05 登录以回复

O BCE é o banco central dos ibercaja empresas países da UE que utilizam o euro. O nosso principal objetivo é a manutenção da estabilidade de preços. Para o efeito
普通 Miquel

2025年3月13日 at 上午4:04 登录以回复

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普通 Ngọc Hưng

2025年3月12日 at 下午4:08 登录以回复

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普通 Xuân Trường

2025年3月12日 at 下午3:19 登录以回复

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普通 PRIME BIOME

2025年3月12日 at 上午7:24 登录以回复

This is great. I learned plenty from going through it. The details is very enlightening and arranged.
普通公務員副業おすすめ

2025年3月10日 at 下午1:32 登录以回复

However keep making excuses to distract from the fact that Michigan has simply been the higher soccer team.

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