unicornis 35 ampere max Power supply board & pcb Price

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• High Output  -  35 Ampere Max output current.
• Unregulated power supply - Capable of  delivering high peak currents with low ripple at peak power demand by amplifiers.
•  Amplifier usability - Designed for High power audio amplifiers.
• Advanced Features - can be used as Dual Reservior or Pi Filter supply.
•  Protection devices - fuses are provided on each supply rail for preventing burnout in case of fault or short circuit.  
• Standard Components - standard branded components which are available online or at your local electronics store.
•  No SMD components used - only through hole components are used in the pcb, this makes soldering and replacement of components hassle free. 
• Metal Tab Connectors - Metal Tab Connectors are used at input and output to handle High Currents.

                                                                                Click Here to download Unicornis power supply circuit diagram 

This power supply circuit is quite simple. 

AC input received from transformer is converted in to DC by Bridge rectifier D1. 

Always use heatsink with bridge rectifier because without heatsink the bridge rectifier will only output 2 - 4 amperes and gets hot.

So with the use of suitable heatsink we can get full current output from the bridge rectifier.

C1, C3 are Filter capacitors on the positive rail.

C2, C4 are Filter capacitors on negative rail.

Leds D2 & D3 with R1 & R2 used to indicate supply status.

JP1 & JP2 are Wire Jumpers.

Advanced Features - as we can see in the circuit diagram, C1 and C3 is separated by jumper JP1, C2 and C4 is separated by JP2. in normal case a simple wire connector is sufficient. 

• Dual Reservoir - We can use 0E22 5 / 10 Watt wire-wound resistor in place of JP1 & JP2, it will further reduce the ripple at output as C1, C3 & C2, C4 will work as dual reservoirs. this is a very cost effective method of reducing ripple.

• Pi Filter - using 10mH inductors of suitable wire gauge in place of JP1 & JP2 will provide best ripple rejection and very clean DC. wire gauge of inductors or we can say their current capability depends on the load current. More the load Bigger the inductor ( some times as big as transformer).

  Bridge Rectifier

• D1  -  GBJ3510 or similar  +AA-   footprint bridge rectifier.

                      * working voltage and output current vary, please read datasheet carefully. 

• Type of PCB  - Single sided, Glass Epoxy FR-4 Grade A  
• PCB size - 136 mm x 64 mm (5.3 inch x 3.2 inch ), pcb Thickness - 1.6 mm.
• Thickness of copper on PCB - 35 micrometer 

PCB designed with thick copper tracks & large solder pads to facilitate straightforward  placement and soldering of components. 

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