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Why does LED like to die? Because you forgot this!

Do you know...

The LED is not broken because of overpressure.

.

But it's because of the "overcurrent"!

.

Many people take the LED straight to 5V.

I thought it was five volts.

.

The result is

One light

Then permanently extinguished

.

Because the LED only needs about two volts.

The remaining 3 volts.

The "resistor" must be given instead.

.

This is the function of R 1KΩ.

.

It helps to limit the current.

Not to flow too hard.

Like a water valve

Too open. The pipe's broken.

Fit on. The system lasts a long time.

.

The formula is simple to remember.

V = I × R.

.

If you don't want the LED to die for free,

Don't forget to wear a resistor every time.

.

Want to understand simple electronics

.

Starting from the basics until the cycle itself.

.

Apply online at

www.santayatech.com

.

Inbox or Line @ 224selcv

.

See you on course.

.

# Basic electronics

# Resistance

# LED

# Electrician

# Study online

2/24 Edited to

... Read moreจากประสบการณ์ตรงที่เคยประกอบวงจร LED เพื่อใช้ในโปรเจ็กต์เล็ก ๆ พบว่าหลายครั้งที่เจอปัญหา LED ติดได้ไม่นานก็เสียไป ทั้งที่ใช้แรงดันไฟฟ้าเพียง 5V ซึ่งหลายคนอาจเข้าใจผิดว่าแรงดันไม่สูงจึงไม่น่าจะเป็นปัญหา แต่ความจริงแล้ว อุปกรณ์อย่าง LED ต้องการแรงดันเพียงประมาณ 2V เท่านั้น ส่วนแรงดันที่เหลือจำเป็นต้องถูกจำกัดกระแสด้วยตัวต้านทาน (Resistor) เช่น R 1kΩ เพื่อป้องกันไม่ให้มีกระแสไฟเกินไหลผ่านวงจรจนส่งผลให้ LED เสียหาย โดยเปรียบเทียบง่าย ๆ ว่ากระแสไฟเปรียบเสมือนน้ำในท่อ ถ้าปล่อยน้ำไหลเต็มท่อโดยไม่มีวาล์วควบคุม ท่ออาจแตกได้เช่นเดียวกัน ตัวต้านทานจึงทำหน้าที่เหมือนวาล์วควบคุม ป้องกันไม่ให้กระแสไหลเกินพิกัด และช่วยยืดอายุการใช้งานของ LED นอกจากนี้การเข้าใจสูตร V = I × R จะช่วยให้เลือกค่าตัวต้านทานได้เหมาะสมกับแรงดันและกระแสที่ใช้จริง สำหรับผู้เริ่มต้นที่อยากเรียนรู้การใช้งานอุปกรณ์อิเล็กทรอนิกส์อย่างถูกต้อง การเลือกเรียนออนไลน์กับแหล่งข้อมูลที่เชื่อถือได้ เช่น Santaya Technology นั้นช่วยให้เข้าใจพื้นฐานง่าย ๆ ตั้งแต่การต่อวงจร การคำนวณวัสดุ และหลักการทำงาน ทั้งยังสามารถสอบถามรายละเอียดเพิ่มเติมผ่านช่องทาง Line @224selcv ได้อีกด้วย โดยรวมแล้ว การใส่ตัวต้านทานในวงจร LED เป็นสิ่งจำเป็นที่ไม่ควรละเลยเลย เพราะช่วยปกป้อง LED จากความเสียหายและช่วยให้วงจรทำงานได้อย่างปลอดภัยและยาวนานมากขึ้น การตระหนักรู้และใส่ใจรายละเอียดเล็ก ๆ เหล่านี้ถือเป็นกุญแจสำคัญในการทำวงจรอิเล็กทรอนิกส์ให้สำเร็จและใช้งานได้จริงในชีวิตประจำวัน

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