- #1
LENIN
- 101
- 1
How do we get a DC from AC. More excately how is this done in comercial adapters (I think they are cold this)?
Transform AC to DC: Understanding Commerical Adapters
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SUMMARY
The discussion focuses on the conversion of AC to DC using commercial adapters, specifically highlighting the role of bridge rectifiers. A bridge rectifier employs diodes to convert the alternating current's sine wave into a unidirectional flow, effectively transforming troughs into peaks. Additionally, capacitors are utilized to smooth the resulting waveform, ensuring a more stable DC output. The mechanical analogy of check valves and buckets illustrates the process of maintaining consistent flow and reducing pulsations.
PREREQUISITES- Understanding of bridge rectifiers
- Knowledge of diode functionality
- Familiarity with AC and DC current characteristics
- Basic concepts of capacitors and waveform smoothing
- Research the operation of bridge rectifiers in detail
- Learn about different types of diodes and their applications
- Explore capacitor selection for smoothing DC outputs
- Investigate the impact of waveform characteristics on electronic circuits
Electrical engineers, electronics hobbyists, and anyone involved in designing or utilizing commercial power adapters will benefit from this discussion.
- #2
brewnog
Science Advisor
Gold Member
- 2,751
- 8
The chaps in the Electrical Engineering will know more about this than me, but a bridge rectifier is used. As you know, AC usually takes the form of a sine wave. The bridge rectifier uses the directional property of diodes to convert the troughs of the sine waves to peaks, so that the current is now only moving in one direction. A capacitor is then often used to 'smooth' the resulting waveform.
A mechanical analogy might be a network of check valves to make water always flow in a single direction, with a bucket (capacitor!) used to reduce the 'pulses' in flow.
A mechanical analogy might be a network of check valves to make water always flow in a single direction, with a bucket (capacitor!) used to reduce the 'pulses' in flow.
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- #3
LENIN
- 101
- 1
Thanks
Thanks brewnog the link is really helpful. I did think there has to be something with diods somwhere in ther but I never thought there are 2 peres of them. The othere plans on the link are also interesting. Thanks agein!
Thanks brewnog the link is really helpful. I did think there has to be something with diods somwhere in ther but I never thought there are 2 peres of them. The othere plans on the link are also interesting. Thanks agein!