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Matching Power and Driver Transistors - The Audio Pages ...
https://sound-au.com/transistor-matching.htm
Matching power transistors is theoretically easy, but in reality there are quite a few parameters that should be matched to get true matched pairs. The situation is made a little harder when you have PNP and NPN (or N-Channel and P-Channel) devices, since the simpler comparison (or bridge) techniques don't work due to the opposite polarities.
Transistor Matching - Trevor's Repair Café
https://therepaircafe.wordpress.com/2021/02/26/transistor-matching/
Transistor Matching When you get into synthesizers (or any other analog audio related topic), you quite quickly come across designs like VCAs with long tailed pair (LTP) input stages or the famous ladder filters that require you to have so called “matched” transistors.
Matching transistors for discrete opamp (audio use)
https://electronics.stackexchange.com/questions/195600/matching-transistors-for-discrete-opamp-audio-use
Matching transistors for discrete opamp (audio use) Ask Question Asked 6 years, 3 months ago. Active 6 years, 3 months ago. Viewed 1k times ... in hopes to grade them for matching. I have made a plot of AC voltage and a scaled-for-convenience DC …
Matching transistors - Measuring hfe | diyAudio
https://www.diyaudio.com/community/threads/matching-transistors-measuring-hfe.93898/
Other transistors will have lower hFE and so they are labelled BC547A It comes from the quality of silicon material used. What the resulting transistor will be called. And each marked, labelled transistor should match the datasheet specifications and tolerances for it. When it comes to parameters. lineup Lineup Audio Transistor Lab •••
Is transistor matching really necessary for sound ...
https://www.eevblog.com/forum/projects/is-transistor-matching-really-necessary-for-sound-amplifiers/
In the input stage matched transistors can help to get an operating point as intended without adjustments and this way better THD and especially less DC offset. Anyway most reasonable build audio amplifiers have low enough THD values. The speakers tend to have much higher THD.
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