Carsten Groen's (OZ9AAR) personal place
Interests and experiences
Flatpack2 HE interface board
The ELTEK Flatpack2 HE powersupplies are quite popular among Ham radio operators/builders. They are often to be found on Ebay and other places, sometimes at reasonably prices too. The powersupply this interface board is for, is the Flatpack2 HE 48V/3KW version. This powersupply can be controlled via CAN Bus, I use this in some of my porjects, this is not the scope of this description.
The powersupply has a large multipin connector at the back of it, all signals, power input, power output etc are connected to this.
Many uses some simple "dangerous" ways of connecting to the right pins. I don't like that very much, so I made my own "connection board" for this powersupply. It brings out the 230V input, the 48 (43 to 57VDC) output, CAN Bus, control signals etc. I also designed a cover PCB board for the backsite of it, as it is easy to by accident, to put your fingers and get some serious electro shocks!
REMEMBER! I TAKE NO REPONSIBILITY OF THE CORRECTNESS OF USEFULNESS OF THIS PROJECT. IT CONTAINS MAINS VOLTAGE, AND IT CAN KILL YOU, BURN YOUR HOUSE DOWN OR EVEN WORSE THINGS!
SO ONLY USE THIS ON YOUR OWN RISK
You can download the datasheet for the Flatpack2 HE 3KW supply here
The board
Below is a couple of pictures of the finished board. I'm using XT90 connectors for the DC output. The board has screw terminals for the rest of the signals. The CAN Bus has a onboard 120 Ohm termination resistor. The 48V, 5V and 12V supplies each have a LED.
Schematics and layout files
Schematic of the board is very simple. A picture is shown below, click on it to get a full resolution PDF of the schematic.
You can order PCBs directly from JLCPCB using these two ZIP files. One is for the board itself, and one is for the cover plate.
The BOM (Bill Of Materials) are also pretty simple, you can see it here, click on picture to download a PDF file
The fields "OC_FARNELL" and "OC_MOUSER" are ordercodes to use at FARNELL and MOUSER if you order components from one of these
