Sigma dual + and - power supply

Description

I purchased two of these for a project and never got round to starting it. Each one is brand new and unused and still in the original wrapping. This listing is for one power supply.

PCB specification: 101mm*135mm*1.6mm, 1OZ copper, gold plated.

New version V2.0 optimization point:

1:Use AMB Sigma22 V2.0 circuit diagram;
2:Use Schottky common cathode rectifier for smaller internal resistance and faster response
3:Compatible with many high-grade main capacitor's pin,


[Description]:
Sigma22 series voltage regulator circuit, single-digit UV level index, infinitely close to the battery level; maximum support for 30A current output; sense neutral, background super quiet, high resolution. By replacing the Zener tube, it can do 5V-36V dual power output, the maximum output is 30A, which is very suitable for medium and large amps and desktop power amplifiers, medium and high power rear stage.

[Introduction]:
Fully discrete component structure, single-stage series regulator design.

No ic use, so that the entire design can control each control loop node to achieve the best performance parameters of the voltage regulator.

The complementary voltage stabilizing structure, the negative voltage regulator part is the complementary mirror image of the positive voltage regulator part.

Ultra-low noise, extremely high PSRR (power ripple rejection ratio).

The low-pass filter's knee frequency is as low as 1.6 Hz to prevent diode switching noise from entering the error amplifier. This part also has a soft-start function.

Effectively guarantees the output noise of the regulated power supply as low as μV.

The high-current MOSFET ensures that the current output of the regulated power supply is sufficient and the current is as high as 30A.

With high bandwidth, the Sigma22 is designed to have its own bandwidth and far beyond the audio bandwidth.

The output impedance of sigma22 is far lower than the best low-ESR large-capacity electrolytic capacitors on the market. Due to the high bandwidth design of sigma22, sigma22 can easily cope with the ever-changing amplifier current requirements and ensure that the back-end amplifier can reach its full potential. (The output impedance is as low as μΩ, 1Ω = 1000mΩ = 1000000μΩ).

Ad ID: 1493646840