11-02-2016, 00:35
(10-02-2016, 14:09)tyntop Wrote: Hi,
Does this trick work on all TX board versions and can you post diagrams/ pictures of how it is done
Yes, works with all versions.
Sorry I haven't any pics or diagrams. Please read carefully the post above, I'm sure you'll figure how to do it.
(10-02-2016, 22:15)Shred Wrote: I've been tempted to use one of the Traco Power switching regulators. They are not cheap at around AU$ 10.00 each, but they're a drop-in, high efficiency replacement for the 78xx regulators.
http://au.rs-online.com/web/p/switching-...s/8179413/
The result is exactly the same, but this way you spend less than $1, and additionally you gain the possibility to raise a little the output voltage and boost the RF range.
The gain in consumption depends mainly of two factors:
Input voltage in the 7809 (generically 12V but with solar systems can reach 13.8V or more)
System with or without a fan for the radiation shield.
For a system without a fan, powered by 12V the power saving is around 0.2W, but for systems with a fan, it can reach 0.5W