Re: Lesson R,L,C,T,V,D but Q and U ?
I've seen VT on some circuit diagrams for transistors.
Interestingly, older Practical Wireless magazines used TR for transformers (before transistors). But in the 1970's, Everyday Electronics used TR for transistors and just T for transformers.
I have used Q for transistors certainly since 1989 in the day job! I may have used TR before then... have to look out an old PCB and check the legend!
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