- #1
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SUMMARY
Connecting 12 volts DC to 120 volts AC through a diode can lead to hazardous conditions, including potential battery explosion. When the AC voltage drops below 12 volts, current can flow from the battery, theoretically drawing an infinite amount of current, which can damage the battery and wiring. The critical threshold for this current flow occurs when the AC voltage drops below approximately 11.4 volts. This setup is highly discouraged due to safety risks associated with mains voltage and large batteries.
PREREQUISITES- Understanding of diode functionality in electrical circuits
- Knowledge of AC and DC voltage characteristics
- Familiarity with battery behavior under load
- Basic electrical safety protocols
- Research the behavior of diodes in AC circuits
- Learn about battery management systems and their safety features
- Study the principles of relay switching in electrical systems
- Investigate the risks associated with connecting DC to AC power sources
Electrical engineers, hobbyists working with power electronics, and anyone involved in designing or troubleshooting AC/DC systems will benefit from this discussion.
- #2
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Well, when the AC voltage drops below 12v and then goes into the negative part of its cycle, it will pull current out of the battery, theoretically an infinite amount assuming ideal sources, thereby causing the battery to explode. Don't try this at home, kids !
- #3
sophiecentaur
Science Advisor
Homework Helper
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This is not a good idea. During the negative cycle of the AC (the + and- are reversed) and current will flow from the + of the battery through the diode- in fact, as soon as the AC terminal voltage drops below +11.4 volts or so and the current will eventually be so high that it will knacker the battery, melt the wires , blow a fuse.
Don't touch mains voltages or big batteries until you can answer this sort of question yourself, without asking anyone. Be safe.
Don't touch mains voltages or big batteries until you can answer this sort of question yourself, without asking anyone. Be safe.
- #4
- #5
berkeman
Admin
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John1397 said:
John1397 said:
Wow, crazy dangerous. Thread is closed.