Quote:
Originally Posted by zeno
Almost all if not all early sets that ran on 12 VDC used
a power transformer. Latter sets sometimes used a multivibrator
& higher voltages to run the set. RCA comes to mind. Its
all about economics.
73 Zeno
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And Zenith continued to use cold chassis for their BW 13" sets till 1978..12KB1 chassis. Also in that period their lager BW sets----with the 19GB1 chassis--it used a VRT for power even. As did the "flat chassis BW 19FB12 chassis that came before it , a couple of us here have.