Building an H Bridge 8A Circuit on a Bread Board

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SUMMARY

The discussion centers on the limitations of standard breadboards when constructing an H Bridge circuit capable of handling 8A. It is established that typical breadboards cannot safely manage more than 1A continuously, and using wires thicker than 20 gauge is inadvisable. For high-current applications, alternatives such as soldering thicker gauge wires directly to contacts, using perf boards, or designing a custom PCB are recommended for safety and reliability.

PREREQUISITES
  • Understanding of H Bridge circuits and their applications
  • Familiarity with breadboard limitations and specifications
  • Knowledge of wire gauge standards, specifically American Wire Gauge (AWG)
  • Basic skills in soldering and PCB design
NEXT STEPS
  • Research safe current limits for various breadboard types
  • Learn about H Bridge circuit design and implementation
  • Explore techniques for soldering thicker gauge wires
  • Investigate PCB design software and prototyping methods
USEFUL FOR

Electronics hobbyists, circuit designers, and engineers working on high-current applications who need to understand safe construction practices for H Bridge circuits.

anita1984
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Hello forum , i want to ask you a simple question , i am building a circuit on a bread board, the circuit is an H bridge 8A , is normal bread board can handle this current or the connection inside the bread board will be in not safe mode ?
Thanks for reply,
Have a nice day
 
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If this is one of the breadboards that you use to plug in components and thin wires into, something like the following:
http://www.circuittest.com/English/Content/Divisions/Div_88_180.asp

...Then no, it won't be able to carry more than an amp continuously (and even that is probably pushing it). Note also that you can only plug in wires that are at most 20 gauge, which I would definitely not put more than 1 A into:
http://en.wikipedia.org/wiki/American_wire_gauge

You may need to directly solder thicker gauge wire onto the contacts (assuming this is an IC) or put it onto some perf board (also with soldered connections) or develop a PCB around it.
 

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