Electrical Engineering › Section Q · Thyristors, operational amplifiers, and power conversion › Topic Q.10
Power supply circuits
Almost every electronic device needs a steady dc voltage that no battery or wall socket supplies directly. Power supplies make it in three main ways, unregulated, linear and switching, and the choice is a trade between cost, noise, size and efficiency.
In this topic
- What a power supply does
- The unregulated supply
- Worked example: a brute-force supply
- Judging a power supply
- Shunt regulators
- Worked example: a Zener regulator
- Series (linear) regulators
- Worked example: a linear 5 V rail
- Switching supplies
- Worked example: buck against linear
- Common mistakes to avoid
- Key takeaways
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