| Author |
Message |
    
Buck
| | Posted on Sunday, November 02, 2003 - 1:46 pm: | 
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Can someone explain to a dumb ol farm boy what the difference in a switching and regular power supply is?? I know this has been explained before but I cant find it
Thanks
Buck |
Bigbob
| | Posted on Sunday, November 02, 2003 - 9:04 pm: |
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You think you're dumb,I know the diff. and I still can't explain it.Bigbob |
Buck
| | Posted on Sunday, November 02, 2003 - 10:07 pm: |
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LOL |
Alsworld
| | Posted on Sunday, November 02, 2003 - 10:08 pm: |
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I think this may help as I cannot explain it worth a darn myself. Look here http://www.nanosysco.com/powersupply2-1.html
Bottom line, if you want to get a power supply for your radio at home, ensure you get one that are sold for communication equipment. What I mean is I went with a switching type power supply to run my radio and accessories at home. Switching power supplies are notorious for causing noise in communications equipment. I bought one sold through ham radio stores, and it has zero hash and trash. It's filtered and targeted toward radio operators. Not all switching units are. Switching power supplies tend to be smaller and lighter, yet capable of some pretty nice sustained amps. Mine is 30amp continuous, 32 surge. About the size of a KL 400. Regulated are fine, but larger and heavier (i.e. more $ in shipping).
Both are good choices, but I would stick with one advertised toward radio communications. It ensures proper filtering for our use.
Alsworld
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Buck
| | Posted on Monday, November 03, 2003 - 8:04 am: |
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Thanks AL....Guess its time to do a little reading I just want to make sure my power supply will treat my new Lincoln right. I bought the power supply about a year ago at radio shack. Its a 25 amp continous and has never made any noise in my Titan. Price was right also. On sale for $60.
Thanks for the info
Buck |
307
| | Posted on Monday, November 03, 2003 - 3:03 pm: |
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A "Linear" Power Supply has a transformer that takes 110VAC on a primary winding and converts it to a secondary winding at 28VAC (or so) and then you rectify it , filter and regulate it to the desired output voltage (i.e. 13.8VDC) to get DC out.
A "Switching" Power Supply takes the 110VAC and chops it up , converts it to a square wave , multiplies it to 20 Khz (or so) and filters it to look like pure DC , then regulates it at the desired DC Voltage. (i.e. there is no transformer per say). This is a very "fast" way to describe it.
307 |
Buck
| | Posted on Monday, November 03, 2003 - 4:37 pm: |
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Well that is a pretty goodexplination 307........ Even I can understand that
Thanks
Buck |
Ca346
| | Posted on Monday, November 03, 2003 - 6:01 pm: |
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307:
I hope you don't talk to your wife that way (If you have one). As soon as good, clear, communication developes, you're in real trouble.... 
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Ca346
| | Posted on Monday, November 03, 2003 - 9:23 pm: |
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Reading my latest November QST magazine (finally got to it, after wearing the COPPER catalog out), I find there is a comparison in the workbench section between "switching" and "linear" power supplies. Very interesting.
It compared the light weight of a switcher PS (3#) to the heavy weight of a linear (25#). Apparently, the switching PS can cause alot of noise in our HF ranges.
Both of my power supplies are linear. A couple of boat anchors! But who cares if it's quiet and I'm not carrying it around? |
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