Another possibility is to replace the 7805 with a small switching regulator (around, in my case, an MC34063, but there are better candidates) which remains cool, and significantly reduces the overall supply current.
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On Feb 11, 2025, at 9:33?AM, Evan Hand via groups.io <elhandjr@...> wrote:
Hi Pieter,
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To build on Bob's idea, you could move the diodes to the input of the LM7805 regulator. This would give the PA a higher voltage and more power output.? ?
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From the Raduino_tft schematic:
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<inline.0.part>
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73
Evan
AC9TU
