MHS-5200A DDS Signal Generator

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Replace Wall-wart Power Supply[edit]

  • Wall warts put AC on the BNC grounds.
    • Fix it by replacing with an AC/DC linear supply
  • Diodes backwards on silkscreen/image

MHS-5200A PwrSupply.png

Parts[edit]

Installation[edit]

  • Plenty of room inside

Pwr-Sply-Repl-P17210-720px.jpg

  • Inside view of rear panel

Pwr-Sply-Repl-P17212-720px.jpg

  • Fit AC socket/switch where DC switch was located

Pwr-Sply-Repl-P17207-720px.jpg

  • Cut with tin snips
  • File for tight fit
  • With AC socket/switch installed

Pwr-Sply-Repl-P17217-720px.jpg

  • With transformer/Power Supply board installed and wired

Pwr-Sply-Repl-P17223-720px.jpg

  • Power switch close-up
  • DC switch looped back

Pwr-Sply-Repl-P17226-720px.jpg

  • Works

Pwr-Sply-Repl-P17229-720px.jpg

Simulation[edit]

6.8Vrms = 9.615V peak

SimResults-01.PNG

Reviews / Fixes[edit]