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Old 05-20-2018, 02:43 PM
Jon A.'s Avatar
Jon A. Jon A. is offline
Don't mess with Esther.
 
Join Date: Jun 2013
Location: Canada
Posts: 4,267
Quote:
Originally Posted by zeno View Post
Zenith never used that HVSD scheme. Off hand I remember RCA,
Hitachi, Panasonic using it. The Zenith CC2 & flat chassii had NO HVSD
circuits. The dept of HEW approved both the S caps in parallel & the
4 lead caps for X-ray protection. Most mfg's both US & Jap in the mid 70's on their top of line sets copied the Zenith fero-resonance supply & cap
arrangement some without HVSD. Looking back Zenith & Maggy regret not
having HVSD

73 Zeno
LFOD !
That being said, am I correct in assuming that my Heathkit GR-2000, with its RCA-design SCR sweep also uses this HVSD scheme? I can't keep horizontal locked on that thing and when it goes askew a transformer on the horizontal out board makes an arcing noise.
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