Low Noise 45V-4A Dual Rail Power Supply Using Enhanced Capacitance Multiplier
The core element of any electronic device is the power supply. Any instability or malfunction of the power supply causes the device to malfunction or demonstrate weird behavior. In some sensitive applications, we need a dual voltage-rail power supply to prepare a high current and low noise voltage at the output. In this article/video, I introduced a low-noise AC-to-DC power supply that can handle up to 4A continuously and accept input voltages up to 35V-AC.
To design this power supply, I decided to use an enhanced capacitance multiplier circuit. I paid high attention to good grounding, assigned the top layer of the PCB to the ground, and drew power planes instead of tracks to carry high currents. As a result, I could not detect any noise or ripple at the output even at the maximum output current!
I tested the board for voltage drop, current delivery, and output noise. I used Siglent SDL1020X-E DC Load and Siglent SDS2102X Plus oscilloscope to perform all tests. I’m confident that this design satisfies your needs in many applications.
More details here:
Low Noise 45V-4A Dual Rail Power Supply Using Enhanced Capacitance Multiplier
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- Mitko Petrovik Feb 11,2024
- BlamesJake Dec 12,2023
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