I done that wit mine,well the reg part n on 12v i get 10w out
On 21 Mar 2017 4:17 PM, "vk3xl via Groups.Io" <vk3xl=
[email protected]> wrote:
I am using a sony SMPS from an old laptop with my BitX40 s. there appears to be no extra noise above the band noise that I can tell using this supply. Note this supply is 19.5v and I use a small step down converter to run the board at 12v and I have 19.5 V on the final. With this I get about 12 watts output. You could use a 3 terminal voltage regulator like a LM7812 to drop the volts to 12v for the board and then wire the final up to the laptop supply direct. The current draw on the board minus the final should be handled by the LM7812 but it would need some current bypass if you wanted to connect the final as well at 12V. thus my suggestion to run the board at 12v and the final at whatever the laptop supply outputs. I have run my final with 28v without problems and got in excess of 20 watts output.
your laptop supplies should be fine just check their voltage and adjust things to suit.
--
Mike VK3XL
