Depletion FET regulator...

[Jasen Betts]

On 2023-07-13, bitrex <user@example.net> wrote:

What\'s the behavior of a simple regulator like the one in Fig 10, on
start-up and shut-down?

https://www.infineon.com/dgdl/Infineon-Application_Note_Applications_for_Depletion_MOSFETs-AN-v01_00-EN.pdf?fileId=5546d4624cb7f111014cd63d1a197d94

When under-volted the FET channel is conductive.
also the internal diode will allow current to flow from the regulated side
out through the supply terminals.

for repeatable results probably it wants TL431 or something like that instead
of a zener.

--
Jasen.
🇺🇦 Слава Україні