Re: no dc/dc converters

On Thu, 12 Jun 2025 13:42:42 -0000 (UTC), Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

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

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.
 
 

>
Mother of All Bass.
>
Cheers
>
Phil Hobbs

There is the distortion issue. We can pressurize without limit, but we
can only rareify to zero PSIA. Most rock fans wouldn't notice.