Assemble 2019 Sigma22 series regulated servo linear power supply kit +/- DC OUT 

Description

Assembeld board. （with 2pcs NOVER 10000uf 50V main Capacitors)  we will solder and test it well.  when you choose this type. Please tell us what the output votlage is your need. Thanks)


2019 version Sigma22 V2.0 series regulated power supply kit  (high current version)

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).


Voltage setting:

On the back of the PCB, has marked different Zener diode (base voltage) are selected for different output voltages.


            When Output is: +/- DC5-8V, Zener diode “Z-D” using   2V7

            When Output is: +/- DC9-13V, Zener diode “Z-D” using   4V3

            When Output is: +/- DC14-19V, Zener diode “Z-D” using   6V2


            When Output is: +/- DC20-24V, Zener diode “Z-D” using   7V5


            When Output is: +/- DC25-36V, Zener diode “Z-D” using   12V


（ the DIY kit will include 2V7  4V3  6V2  7V5  12V 5pcs Zener diode ）

Input voltage requirements:

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]


if the voltage difference is enough, and Do not consider heat dissipation. this board can output max currect about RMS 10A. peak 30A currect.  but the standard heatsink can bear about 500mA currect load. if you need higher currect. please Strengthen the radiator.

About heat dissipation:

The heat sink as standard on the kit and the finished board can withstand nearly 2 watts of power consumption（each heatsink is about 1 watts power consumption）. It can be predicted by PT=VI. When the heat is too large, it is recommended to use the chassis bottom plate for heat dissipation.
     


Payment

1.We accept PayPal only.
2.All major credit cards are accepted through secure payment processor PayPal.
3.Payment must be received within 7 business days of auction closing.
4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.

Shipping

1.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
2.Items will be shipped within 1-3 business day when we received payment.
3.Delivery time depends on destination and other factors;
4.International buyers please note:
  a.Import duties, taxes and charges are not included in the item price or shipping charges. These charges are buyer’s responsibility. We will try our best to reduce the risk of the custom duties.
  b.Please check with your country's customs office to determine what these additional costs will be prior to buying.


Returns policy

1.If the item is not as described or damaged in transportation, please send it back within 7 days upon date of receipt

2.For defective item, we guarantee free exchange or full refund within 30 days from the day of placing order

3.Buyers pay shipping fees at their own cost to return products for exchange or refund. We will be responsible for the postage of replacements

4.Items must be unused, in original packaging and include all parts, accessories and packaging

5.When we receive your returned item, we will investigate the situation and consider to offer replacement or refund according to the situation


Terms of sales

1. All the items will be tested before shipping. Buy them with the confidence! 

2. We maintain hightest buyer ratings StarStarStarStarStar and 100% customer satisfaction,  Positive Feedback will be much appreciated from you.

3. Any dissatisfaction or problem, please contact us before you leave neutral Neutral feedback rating or negative Negative feedback rating feedback.


Feedback

1.When you received package and like it, kindly comfirm received order and leave a positive feedback with full stars for us. Thank you.

2.Any dissatisfaction or problem, please contact us before you leave neutral Neutral feedback rating or negative Negative feedback rating feedback.

 

 

DataCaciques