Re: no dc/dc converters

On Thu, 12 Jun 2025 22:04:54 +1000, Chris Jones
<lugnut808@spam.yahoo.com> wrote:

On 11/06/2025 1:20 pm, john larkin wrote:

On Tue, 10 Jun 2025 17:30:18 +0100, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:
 

john larkin <jl@glen--canyon.com> wrote:
>

On Tue, 10 Jun 2025 10:15:30 -0400, legg <legg@nospam.magma.ca> wrote:
>

On Mon, 09 Jun 2025 10:06:16 -0700, john larkin <jl@glen--canyon.com>
wrote:
>

There seems to be a run on dc/dc converters
>
https://www.digikey.com/en/products/filter/dc-dc-converters/922?s=N4IgjC
BcpgHAzFUBjKAzAhgGwM4FMAaEAeygG0R4A2MAVgCYB2EAXSIAcAXKEAZU4BOASwB2AcxABf
InXq0kIVJEy5CJciHoAWAJxhGENiC49%2Bw8VJkMqCpSvxFSkCtr2N6rDt0h9BoidKa9GAQ0
Iro2A7qzpqext4gACLEAK4ARlh4UoEeMQAmyAD0BXE2YUJ5PAC0YAAMEF48IEScAJ7sWT4YO
KiSkkA
>
some sort of tariff issue, looks like.
>

>
In stock - 1 in 3
>
exclude tariffed products 1 in 5. (new selection category?)
>
RL

>
Worst case, I'll have to make my own.

>
Buy shares in the manufacture of dynamotors - they are bound to become
popular again.

 
Diesel powered amplidynes could drive the big woofers at rock
concerts. Rip peoples' clothes off.

>
No, forget the amplidynes and just mechanically couple the engine to a
rotary woofer:
>
https://en.wikipedia.org/wiki/Rotary_woofer
>
Even better, fit a fast servo to modulate the pitch of the bypass fan
blades on a turbofan jet engine.
>
"Regular concert goers judged that the best sound balance was usually to
be heard from within large concrete bunkers some thirty-seven miles away
from the stage, whilst the musicians themselves played their instruments
by remote control from within a heavily insulated spaceship which stayed
in orbit around the planet - or, more frequently, around a completely
different planet. "

How about a big tank of very high pressure air, like 5000 PSI maybe,
and a fast servo valve? That would be loud.

If the gas were an oxygen-propane mixture, and you ignite it, thermal
expansion would add pressure gain.

That sounds like an audiophool product.