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Old 06-16-2021, 06:23 PM
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old_tv_nut old_tv_nut is offline
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Join Date: Jul 2004
Location: Rancho Sahuarita
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Quote:
Originally Posted by LukeSimon View Post
...As a newcomer to pre-solid state TVs, I must say the simplicity and elegance of these older TVs is quite simply wonderful...
All driven by the economics of the technology.

Rough ranking of component costs in analog CRT TVs, ignoring the CRT itself:

Tube sets:
Large transformers, speaker
Active elements (tube sections)
Capacitors/small coils
Resistors

Transistor sets:
Large transformers, speaker
Transistors, coils, capacitors ​(order depending on size/power/complexity) (most caps lower voltage rating than in tube circuits)
Resistors

Bipolar analog IC sets:
Large transformers, speaker
IC package / pin count
Coils
Capacitors
Resistors
PNP transistors inside IC (large area, poor performance, and very rarely used)
Resistance inside IC
NPN transistors inside IC (nearly free)
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