F4IJA

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====== Battery and Power supply ======
===== Battery =====
The battery pack is as discussed in the introduction a 3S4P lithium homemade pack.

It gives 12.6V fully charged and 12000mah of capacity.

The pack is soldered the clean way with a [[other:soldering|DIY point soldering unit]] I've made for making some powerfull eBikes.

{{ :ubitx:battery.png?600 |}}

===== External power supply =====
The rig will have also an external port to connect a power supply to supply only the PA PWR for the finals.

As discussed [[https://groups.io/g/BITX20/topic/max_pa_pwr_voltage/33139548?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,33139548|here]], I'll give it a go to test suppliyng more voltage for the finals and see if there are improvements.

It seems that the max voltage you can supply without damaging the board is about 20V. So I plan to test it maybe at 19-20V and see.

===== Wiring diagram of the power supply =====

D1 and D2 are Schotky diodes rated 8A.

{{ :ubitx:wiring_psu.png?600 |}}

F4IJA

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