‰  NOW 13 WPM  ‰  TEXT IS FROM JANUARY 2017 QST PAGE 34  ‰  

AN OSCILLOSCOPE OR ANOTHER AC LINE CONNECTED INSTRUMENT IS USED TO TEST
THIS CIRCUIT, THEN THEY MUST BE ISOLATED FROM THE AC MAINS BY AN ISOLATION
TRANSFORMER.  CHECK THE INSTRUMENT MANUFACTURERS INSTRUCTIONS IN THIS CASE.
VOLTAGES ASSOCIATED WITH THIS DESIGN ARE LETHAL.  WHEN TESTING THE SUPPLY,
WEAR SHOES WITH THICK RUBBER SOLES.  KEEP ONE HAND IN YOUR POCKET.  DO THE
WORK ONLY WHEN WELL RESTED AND ALERT.  BETTER STILL, WORK WITH A BUDDY AND
‰  END OF 13 WPM TEXT  ‰  QST DE W1AW  ƒ