[sdiy] Power supply of a 19" rack
marzacdev at gmail.com
Tue May 14 10:15:57 CEST 2019
I have not written here for a long time but I keep reading
the list because of the interest of the topics.
I am shared between two concepts for the power supply
of a 19" rack and I would like to hear your opinion both as
musicians and as instruments makers.
_Option A: mains_
Offering a regular 220V / 110V / 100V C14 input at the rack.
pre-certified switched mode power supply (which adapt for all countries)
* C13 cables are common and available
* No need for an external wall adapter
* Musicians seem to like this (my impression)
* Certification process (more complex and costly)
* Design risks (mains inside / grounding / security for users and
* Big additional cost
_Option B: all in_
Offering a regular 2.1mm DC jack connector that can accept ANYTHING
like DC/AC from 6V to 16V.
rectifier + small DC/DC converter or linear regulation
(depending on the consumption and dissipation of the circuits)
* Everyone owns needless adapters that could be reused
(= environment friendly / less e-waste)
* Less design complexity
* No mains inside the rack
* Simplified certification process
* Need an external power adapter
* Need a power adapter that works for the region where the machine is used
(simple wall transformers often cannot travel)
* Musicians don't seem to like it (my impression)
What would you prefer?
PS: By the way, last hours for the Buzzzy! on Kickstarter:
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