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FeelTech FY3224S 24MHz 2-Channel DDS AW Function Signal Generator

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Aldo22:

--- Quote from: BrokeEngineering on December 14, 2024, 01:46:46 pm ---Thank you very much, is that hole to hole or to the end of the stubs? Looks like M3 size to me

--- End quote ---
Hole to hole, of course.
M3: This has no thread, you simply choke a wood screw into it.

BrokeEngineering:
I was thinking single 2 tap 12V 5W transformer that goes into the PCB into a full wave bridge rectifier (With proper caps ofc). The +12/-12 can be from the LDO's direct, and for the 5V I will make a high efficacy, low EMI buck down to around 6.5V for the 5V LDO. Will be quite cheap, probes BOM + single PCB around 10USD. I can filter the output of the BUCK for even less EMI, it wont be much added cost. I wonder if 5W will be enough.

BrokeEngineering:

--- Quote from: Aldo22 on December 14, 2024, 02:00:26 pm ---
--- Quote from: BrokeEngineering on December 14, 2024, 01:46:46 pm ---Thank you very much, is that hole to hole or to the end of the stubs? Looks like M3 size to me

--- End quote ---
Hole to hole, of course.
M3: This has no thread, you simply choke a wood screw into it.

--- End quote ---

I got M3 brass inserts, if the hole is M3 I can just melt some in the plastic so its a better fit/ M2 outer brass diamater needs to be between 2.8 and 3mm, for m4 I think it was around 4mm. Too much trouble to check the hole diameter please?

Aldo22:
Don't you think you're exaggerating a bit?
The FY3200 is OK as it is for the price, but I wouldn't invest much time in “improving” it.


--- Quote from: BrokeEngineering on December 14, 2024, 02:42:59 pm ---Too much trouble to check the hole diameter please?

--- End quote ---

I have taken a photo (top view) for you.
You know that the longer hole spacing is 600mm, so you can calculate everything else from the photo.
I think it's about 2.2mm (from the photo).
I can't measure it to the micrometer anyway.

BrokeEngineering:

--- Quote from: Aldo22 on December 14, 2024, 03:41:33 pm ---Don't you think you're exaggerating a bit?
The FY3200 is OK as it is for the price, but I wouldn't invest much time in “improving” it.


--- Quote from: BrokeEngineering on December 14, 2024, 02:42:59 pm ---Too much trouble to check the hole diameter please?

--- End quote ---

I have taken a photo (top view) for you.
You know that the longer hole spacing is 600mm, so you can calculate everything else from the photo.
I think it's about 2.2mm (from the photo).
I can't measure it to the micrometer anyway.

--- End quote ---

I am not trying to improve it, I am trying to make it safe, I live in Eastern Europe and Earth is tied to neutral. So running a wire to the plug earth does nothing. Using a Linear AC transformer with LDO's is the only real way to get no leakage voltage on the BNC's

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