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Here is the Vinnie special 12v 30amp power supply

97.95.43.235

Posted on January 4, 2017 at 21:45:13
Michael Samra
Dealer

Posts: 35580
Location: saginaw michigan
Joined: January 30, 2005
Contributor
  Since:
June 24, 2005
What I did was get out my old Yaesu FT840 ham transceiver that I haven't used in 10 years.I didn't buy it.I actually traded for a pansonic shortwave radio I had that the guy wanted and this was new in the box as he had this extra one.I got it for mobile use.I got this power supply on Amazon for 16 dollars and free shipping.Thanks Vinnie.

This is key down 25 watts at 75m AM into a 50ohm dummy load.The switihing noise is at 20mv on ACV


The DC line is pretty flat and I don't have any audio hum.I did make a contact on 3.880mhz to a guy in South Bend Indiana and he gave me a clean report so the little bit of switching noise doesn't seem to be a problem.I then did a 3.750mhz LSB into Athens Georgia and that was clean as well.That was at 100 watts.

It's actually a pretty nice power supply.You can adjust it from 9.5vdc to 14.5vdc.I think it would be great for filament supply testing and experimentation.



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"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

 

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RE: Here is the Vinnie special 12v 30amp power supply, posted on January 5, 2017 at 02:50:48
vinnie2
Audiophile

Posts: 2520
Joined: September 28, 2013
You're welcome Mikey. If the darned fan didn't make so much noise they would be good for amp filaments too. Like you say though, good for experimenting and bench supplies. Megastat did come up with a solution of subing in a quieter fan, but there is still the problem of space required for using them in an amp.

 

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