Quote:
Originally Posted by bandersen
Hmm, 0.7A seems high, but I can't fault your math. I'd still use either a resistor or a thermistor. It'll give the set a soft start and help preserve those old parts.
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Motorola (CDTS-581) and RCA (CTC11) used inrush current limiters in some early-1960's TVs to lessen inrush on tube heaters in particular - I use the CL-90 made by GE. It is 120 ohms cold and rated for 2 amps. Works for most all monochrome TVs and tube radios. I like to think a transformer can be made to live longer.
The CL-90 works for almost everything but color TV, then a CL-70 has lower cold resistance (47 ohm) but rated at 4 amps, which most older sets draw up to.