Updated: 23 Feb 2022 10h35 SAST - I was asked to publish an outlay of components. Now here is the article, diagram and hand-drawn outlay.
Click on images for larger view.
Part 1 of this article available HERE
In Part 1 I described the controller and tested it on the workbench. In this posting I will display images of the project build and the completed controller that was build into a cabinet. I tested the unit and it is working great. Uninterrupted operation is
realized even
in the event of a commercial power outage, without the radio
"dropping out" at all.
This circuit is now used on the 145.550 Mhz RF Link Radio of the GRHub
Network. No manual switching from power supply to battery and from battery to power supply. As indicated before this unit has many other uses. Can you think of any?
Finally: This unit can only be used for 12 - 24 DC batteries and power supplies. It is really simple to construct but do what must be done, switching between power supply and battery in the event of a power outage. I am considering to add a low voltage battery circuit to the unit to warn me should the level of the battery fall below the set voltage for gel-type batteries. This will prevent any damage to the battery. I just decided to install the low voltage battery unit as per photo. Found one in my module box. Was this a worthwhile project? By all means, yes. I actually need 3 of these units. Who knows I might just build two high power/current units in future.
