Color TV In Hospitals

[Findm-Keepm]

I once bought a used Sony KV-1310 set that had been modified by a California company for hospital use. It had two US-made isolation transformers added, and all of the knobs were changed to non-chromed versions, presumably to pass AC leakage tests. It had a whoppin' hospital grade three wire plug, and the ground connection went only to the Faraday shield on the isolation transformers and the center tap of the internal 300:75 ohm balun. The transformers were a tight fit, and had to be paralleled. It was about 8 years old then, but still sparkly-clean inside, with no yellowing of any labels. Great picture too.

I converted it back to normal for my use, and still have the two 300VA isolation transformers.

Cheers,