How to connect 11v Battery to 5.3 V power Supply

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SUMMARY

To connect an 11V battery to a PC104 requiring 5.3V, a DC-to-DC converter is necessary. A linear regulator, such as the LM7805, can be used to step down the voltage to approximately 5V, although it is inefficient. For better efficiency, a buck converter is recommended. Ensure to add a 0.1uF ceramic capacitor between the output and ground to stabilize the voltage output.

PREREQUISITES
  • Understanding of DC-to-DC converters
  • Familiarity with linear regulators, specifically LM7805
  • Basic knowledge of electronic components, including capacitors
  • Awareness of voltage and current specifications for devices
NEXT STEPS
  • Research the specifications and applications of buck converters
  • Learn about the efficiency differences between linear regulators and switching regulators
  • Explore the use of capacitors in voltage regulation
  • Investigate power requirements and limitations of the PC104 system
USEFUL FOR

Electronics enthusiasts, hobbyists experimenting with power supplies, and engineers working on low-voltage applications will benefit from this discussion.

yaswanth_040
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Hi friends,
I don't have any electrical background. In my experiments I have 11 V Battery which has to power up PC104 which needs 5.3 V. Can please help me out how to step down the voltage.

Thank You,
Yawanth
 
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yaswanth_040 said:
Hi friends,
I don't have any electrical background. In my experiments I have 11 V Battery which has to power up PC104 which needs 5.3 V. Can please help me out how to step down the voltage.

Thank You,
Yawanth

Sounds like what you want is a DC-to-DC converter.

http://en.wikipedia.org/wiki/DC-to-DC_converter"

You could either use a linear regulator (inefficient) or a buck converter.
 
Last edited by a moderator:
Go to DigiKey and look up LM7805. It's a linear regulator that will drop the 12V battery to 5V. Put a 0.1uF ceramic cap between the 5V and ground and it should power your device just fine. I'm assuming the device draws less than 500mA.
 

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