Hi Marcel.
This morning I received a white envelope with the PCBs.
Is it possible that it is the first shipment? I think it's very fast if it's the shipment you made earlier this week ...
If I receive the "lost" shipment, I can return that PCB set to you.
Be aware, I will notify you if I receive the other shipment.
Best,
Francisco
This morning I received a white envelope with the PCBs.
Is it possible that it is the first shipment? I think it's very fast if it's the shipment you made earlier this week ...
If I receive the "lost" shipment, I can return that PCB set to you.
Be aware, I will notify you if I receive the other shipment.
Best,
Francisco
Found a problem in the component tolerances:
The 78x12 regulator may oscilate when using the indicated 2200u cap on the output. Oscilation disappears when reducing the cap to 47u.
The 78x12 regulator may oscilate when using the indicated 2200u cap on the output. Oscilation disappears when reducing the cap to 47u.
Finaly got the 8 channels up and running on my Orion 4.0
The sound is stunning and beats anything I've used until now.
The sound is stunning and beats anything I've used until now.
Hi if you give me a set of PCBs with FETs I give you very adequate heatsinks. Send me a PM for pictures if you are interested.
Here a picture as I could not attach a picture via PM. They are 185 x 230 mm. I don't count the part without fins as I would cut that off. Fins are 40 mm. Material is cast aluminium. I have a few of these left. The work is to cut the part without fins off and then cut them in the middle leaving 6 hopefully 🙂 rightly sized heatsinks. Hint: AFAIK you never published size of the boards...
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😎😎The boardsize is 80x87 mm.
Sorry to say that these sinks do not do the job for me. The solution on the photo was a to bridge the gap to the delivery of the 2 pieces of heatsink that were due. They are 220x85mm and 3meters in length.
Im confident that that supply will tast for the comming years......😎😎😎😀
Sorry to say that these sinks do not do the job for me. The solution on the photo was a to bridge the gap to the delivery of the 2 pieces of heatsink that were due. They are 220x85mm and 3meters in length.
Im confident that that supply will tast for the comming years......😎😎😎😀
That is acting as heatsink.....With the new heatsinks I can increase the Iq to 1,2 Amp at 28V supply. total dissipation then will be 240W (120W per side) with 150mm high sinks.
Sink temp will then be around ambient + 23C
Tested the sinks with 120mm length but that was not sufficient at +28C
Sink temp will then be around ambient + 23C
Tested the sinks with 120mm length but that was not sufficient at +28C
