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by mianos
3172 days ago
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As part of my electronics training many years ago we did a subject on TV repair as a practical introduction to circuit design, at the same time we studied transistors from a more theoretical perspective at college. I will always remember the instructor saying 'there is the design on how you are meant to use transistors and there is how they are used in practice in a TV'. For a consumer TV there was just as much focus on optimising costs as theory. We studied many amazing individual tricks like where three transistors can be used to replace four by putting two backwards. Just assuming a junction voltage of .6V would make you assume everything is broken in a working TV. Many of the tricks rely on non-linear characteristics of the components, such as a light bulb filament. |
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https://en.wikipedia.org/wiki/Muntzing