FrankinAu

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Username: FrankinAu
Joined: March 2022
Visits: 27
Last Active: March 21
Roles: Member
Points: 2

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Quiet switch mode power supply (SMPS) for KiwiSDR

FrankinAu

January 19

What I ended up doing: mains RFI filter 250VA 15 volt 7.5 tap transformer 40kuF filtering 2 of 2N355 & LM317 regulator circuit good for 5 volts & 10 amps easy , weighs couple of Kgs with… (more)

What I ended up doing: mains RFI filter 250VA 15 volt 7.5 tap transformer 40kuF filtering 2 of 2N355 & LM317 regulator circuit good for 5 volts & 10 amps easy , weighs couple of Kgs with metal case heatsink and heavy transformer, my next project is to put the Kiwi SDR into its own sub case with 12v 50mm blower fan powered from the unregulated 10-12 volts DC
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Quiet switch mode power supply (SMPS) for KiwiSDR

FrankinAu

January 12

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Quiet switch mode power supply (SMPS) for
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Quiet switch mode power supply (SMPS) for KiwiSDR - Page 3
https://forum.kiwisdr.com/index.php?p=/discussion/comment/19592#Comment_19592
The spectrum display is much more useful in measuring RFI than the waterfall
Cant go wrong with old school linear power supplies, im now crying I thrown in the dumpster old computer bits with 5 amp 5 volt power supplies a few years ago thinking why do I need that junk.
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