Econoquick (Instant On) Removal

[Chad Hauris]

I know Sony used a direct heated filament cathode (no cathode sleeve) on the crt some of their small b/w sets for very quick crt warmup...I guess they couldn't have really used that on the Trinitron could they?

[old_tv_nut]

Originally Posted by Chad Hauris

I know Sony used a direct heated filament cathode (no cathode sleeve) on the crt some of their small b/w sets for very quick crt warmup...I guess they couldn't have really used that on the Trinitron could they?

Interesting. I don't know, but I wouldn't think a filament cathode would give a very good spot, so maybe it was just OK for small B&W tubes.

I don't know about Sony, but I do remember CRTs going to quick-warmup cathodes in place of instant-on. The quick warm-ups could come on in about 12 seconds (vs. 20 seconds or more in the old sets). Of course, the benefit is only in a solid-state chassis where you are not waiting for a whole bunch of other tubes to warm up.

[zenith2134]

Yeah, I have a 1978 Admiral 12" black and white solid state tv that claims to utilize a "quick-heater" crt - It in fact comes up from cold in about 8 seconds, yet It definitely does not appear to be instant-on. This conforms to what old tv nut said