Sigma11 Mini Board Set Power Supply Kit Adjustable Voltage Regulator Perfect For DAC Power Amplifier

Sigma11 Mini Board Set Power Supply Kit Adjustable Voltage Regulator Perfect For DAC Power Amplifier

Attention:
1. This SIGMA11 kit is only suitable for users who have a certain electronic knowledge and hands-on ability in soldering iron.
2. Due to the different purchase batches, some components will be replaced without notice under the premise of ensuring quality.
3. This kit does not include a chassis, power supply transformer or power supply filter capacitor.
4. SIGMA11 PCB board parameters, mini board 90x40MM/3.5x1.6", standard board 100x75MM/3.9x3", 1.6mm/0.06", 1 OZ, green.
5. When R10 is 10K, the output voltage is 23~24V (also the default output voltage of this kit), and there is an extra 50K 3296 adjustment.
6. The AC voltage supplying the board should not exceed AC 35V.
7. For other output voltages, a rule of thumb is that under load, a voltage drop of about 9V-10V should be maintained through the mosfet.
8. This kit contains the insulating sheet (including two insulating particles) used for the power adjustment tube, equipped with 6 stainless steel screws, but does not include heat dissipation oil.
9. When the rectifier diode is independent for heat dissipation, no insulation sheet is required, but if the bottom case of the chassis is used for heat dissipation, insulation treatment must be done (including the power adjustment tube).
10. For the convenience of users, a 5V and 12V voltage regulator tube are equipped.
11. Constant current tube for Sigma11+1N5819. The 1N5819 pin is slightly oxidized, just scrape it with a blade before soldering. Please make sure that you don't mind before purchasing.

The relationship between R10 and the output voltage value is as follows:
Output Voltage R10 Value Zener Diode (D5)
±36V 4.99K  BZX55C12 (12V)
±30V 6.81K  BZX55C12 (12V)
±27V 7.87K  BZX55C12 (12V)
±24V 10K  BZX55C12 (12V)
±15V 39.2K  BZX55C12 (12V)
±12V  not installed  BZX55C12 (12V)
±9V  not installed  BZX55C9V1 (9.1V)
±5V  not installed  BZX55C5V1 (5.1V) or LM336-5.0 (ADJ pin unused)



Kit Description:
The circuit of the mini board is similar to that of the standard board. The PCB board size of the mini board is small. The main filter capacitor of C5 can be installed up to 18mm. Since the heat sink that can be installed on the power adjustment tube Q13 is also small, it is recommended to be used for small In the case of electric current, for example, about 100MA. Of course, the power adjustment tube Q13 can also be installed horizontally at the bottom of the chassis, which can output a larger current. The four rectifier diodes of the standard board can be installed with heat sinks, the power adjustment tube Q13 and Q14 are two parallel (of course, it can also be installed horizontally on the bottom of the machine tube), the C5 main filter capacitor can be installed up to 30MM, and the standard board is suitable for occasions with larger currents, depending on the current demand and space selection of the load circuit of the fans.

Package Included:
- 1 x DIY Power Supply Kit

Note:
- Assembling is needed.