T
Thomas Tornblom
What is the reason that many/most telco related equipment like analog
modems, dsl modems, SIP adapters etc use A/C (iron core) power adapter
instead of D/C adapters?
I'm hunting down the mass of inefficient power adapters I have, and
I'm replacing many of the hot running transformer types with more
efficient switched ones, and I now have two that are A/C, the SIP
adapter and the DSL router/modem.
I have checked around my stash of old stuff, and with the exception of
an old ZyXEL analog modem, all of the modems have A/C adapters, and
also the DSL modems and SIP adapters, basically anything that connects
to the phone company or have analog phones attached.
Is it perhaps an insulation issue or added safety from feeding high voltage
to the telco switch?
Thomas
modems, dsl modems, SIP adapters etc use A/C (iron core) power adapter
instead of D/C adapters?
I'm hunting down the mass of inefficient power adapters I have, and
I'm replacing many of the hot running transformer types with more
efficient switched ones, and I now have two that are A/C, the SIP
adapter and the DSL router/modem.
I have checked around my stash of old stuff, and with the exception of
an old ZyXEL analog modem, all of the modems have A/C adapters, and
also the DSL modems and SIP adapters, basically anything that connects
to the phone company or have analog phones attached.
Is it perhaps an insulation issue or added safety from feeding high voltage
to the telco switch?
Thomas