Quote:
Originally Posted by Welsh Anorak
All this begs the obvious question - why were the first mainstream portable TVs (say the Thorn 1591 series) so power hungry?
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In fact the Pye TT1 designed in 1960 consumes about the same power as the 1972 BRC 1590. The TT1 has a big 14" CRT which has the standard 6.3V 0.3amp heater and 38mm neck. The Cathodean C14-13A was said to be a special tube but I reckon it is electrically similar to the AW36-20.
That clever power supplier in the Ever-Ready set does require expensive high value smoothing capacitors. 5000microfarad capacitors were considered a big deal in 1963, too expensive for mass market products. Raising the frequency of the power oscillator would help matters.
DFWB.