Lab

Making Polarity switcher with the DPDT switch:

Making Polarity switcher with the DPDT switch: ๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹ We can use the DPDT switch to choose between 2 different load and have a visual indication ofโ€ฆ

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How it works

Making Polarity switcher with the DPDT switch:

๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹

We can use the DPDT switch to choose between 2 different load and have a visual indication of what load is connected. In our case when DPDT switch is ON then the Red LED1 are turned ON. When DPDT switch is OFF then the green LED2 are turned ON with making polarity. Polarity checking using Oscillioscope.

๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹๐Ÿ”‹

What's inside

  • 1× Battery
  • 2× LED
  • 1× Switch
  • Measured with Oscilloscope

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About

By Md. Anisur Rahman
Saved February 04, 2020 · updated January 15, 2026
15,847 views
Page: dcaclab.com/circuits/16614-making-polarity-switcher-with-the-dpdt-switch

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Cite: Rahman, M. (2020). Making Polarity switcher with the DPDT switch:. DCACLab. https://dcaclab.com/circuits/16614-making-polarity-switcher-with-the-dpdt-switch

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