Assembled Sigma22 Series Regulated Servo Power Supply Board For Audio
PCB Size: 101mm*152mm
PCB thickness: 1.6mm
We also can provide Other voltage. +/-5V To +/-36V all kind voltage can provide. if you need other voltage. Please contact us. thanks
Generally, the voltage difference after rectification of the input voltage should be 6-10V higher than the output voltage. [Calculation formula: input AC*1.414-output DC= 6-10V]
About cooling:
The standard heat sink of the board can withstand a power consumption of nearly 1 watt (2 Parallel transistor heatsink 2W in total), which can be estimated according to PT=V*I. When the heat generation is too large, it is recommended to use the chassis bottom plate to dissipate heat.
The board default heatsink only suitable for preamp/DAC/headphone amp etc some small currect device. for large current use such as power amp. recommned use the Chassis bottom plate cooling.
【illustrate】:
Sigma22 series voltage regulator circuit, single-digit UV level pattern index, infinitely close to the battery level; maximum support 30A current output; neutral hearing, ultra-quiet background, and high resolution. By replacing the voltage regulator tube, it can do 5V-36V dual power output, and the maximum output is 30A, which is very suitable for medium and large amps, desktop power amplifiers, and medium and high power amplifier. for high currect, need use big heatsink.
【Introduction】:
Fully discrete component structure, single-stage series voltage regulator design.
No ic is used, so that the whole design can control each control ring point so that the performance parameters of the voltage regulator can reach the best state.
Complementary regulator structure, the negative regulator part is a complementary mirror of the positive regulator part.
Ultra-low noise, extremely high PSRR (Power Ripple Rejection Ratio).
The low-pass filter has a low corner frequency of 1.6Hz to prevent diode switching noise from entering the error amplifier behind, and this part also has a soft-start function.
Effectively ensure that the output noise of the regulated power supply is as low as μV level.
The high-current MOSFET tube ensures that the current output margin of the regulated power supply is sufficient, and the current is as high as 30A.
High Bandwidth, the Sigma22 is designed to have its own bandwidth as well as well 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 current requirements of the amplifier, ensuring that the back-end amplifier can exert its maximum potential. (The output impedance is as low as μΩ, 1Ω=1000mΩ=1000000μΩ).
