Talk:TL431

TL431 is the de facto industry standard
"The TL431 is the de facto industry standard error amplifier circuit for switched-mode power supplies with optoelectronic coupling of the input and output networks." That seems like a bold statement. Is it warranted? No citation, no time frame. Darsie42 (talk) 09:46, 18 August 2023 (UTC)


 * TL431 also made a very similarly-worded claim:
 * In the 21st century, the TL431, loaded with an optocoupler's light-emitting diode (LED), is the de facto industry standard solution for regulated switched-mode power supplies (SMPS).
 * But it actually has 3 citations to specific page numbers on three books to back it up. So while it is a bold statement, it does seem warranted.  So I've made an edit (https://en.wikipedia.org/w/index.php?title=TL431&diff=1171030892&oldid=1147404323) that copied those citations to when this claim is being made in the intro too. Em3rgent0rdr (talk) 16:52, 18 August 2023 (UTC)

On-state VCA
The article states
 * On-state VCA drops to around 2 V, which is compatible with Transistor–transistor logic (TTL) and CMOS logic gates with 5 V power supply.

To my knowledge, standard TTL levels interpret 2 V as a high, not as a low. Therefore, IIRC, the given schematic does not work with standard TTL, as it changes from high level down to about 2 V when tripping. Both are interpreted as '1' by standard TTL.

Unfortunately, as I'm coming from another language Wikipedia, I'm unfamiliar with the Template:sfh sources/references. How do I dereference the given source/reference (currently #40)?

-- Pemu (talk) 16:33, 14 March 2024 (UTC)