Sujet : Re: 1KV buck converter
De : legg (at) *nospam* nospam.magma.ca (legg)
Groupes : sci.electronics.designDate : 25. May 2025, 15:40:54
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <ml963k579o3n2524pgijdeq00lo6nkcgrd@4ax.com>
References : 1 2 3
User-Agent : Forte Agent 4.2/32.1118
On Sat, 24 May 2025 10:35:21 -0700, john larkin <
jl@glen--canyon.com>
wrote:
On Sat, 24 May 2025 12:23:52 -0400, legg <legg@nospam.magma.ca> wrote:
>
On Fri, 23 May 2025 08:05:28 -0700, john larkin <jl@glen--canyon.com>
wrote:
>
>
https://www.dropbox.com/scl/fi/f64mv46qk4g4nca00bgoe/1KV_Buck.jpg?rlkey=f0qnaliz7nyoowe6w4wx2gkua&raw=1
>
The highest diac rep rate will likely be in the tens of hertz range.
(think cicada)
>
RL
>
Why? Diacs and sidacs turn on in under a microsecond. I can't imagine
them taking milliseconds to turn off.
>
Interestingly, sidacs have been used in series strings up to many
kilovolts, which suggets a kilovolt step-down converter with
diacs/sidacs as the only active components.
>
>
Punch some numbers.
Cap size - charge rate - dV.
Turn-0ff time is only a small part of it.
Diacs turn off when discharge current < hold current.
They also have significant internal impedance.
RL