Sujet : Re: EMC compliance question
De : blockedofcourse (at) *nospam* foo.invalid (Don Y)
Groupes : sci.electronics.designDate : 13. Oct 2024, 20:42:37
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <veh7rf$qb7k$1@dont-email.me>
References : 1 2 3 4 5 6 7 8
User-Agent : Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2
On 10/13/2024 12:34 PM, Klaus Vestergaard Kragelund wrote:
Telecom standards tend to mirror BellCore regs.
>
And thinking about that, the ringing voltage was close to 100Vrms, and using flimsy connectors. Amazing that was legal
90Vrms with ~48Vdc talking battery
OTOH, there was a single manufacturer and provider, way back when.
It was a big deal when you could do your own wiring, provide your
own equipment, etc.
But, even HVAC wiring is 24Vac -- as "were" doorbell annunciators.
[I suspect the "wired pushbutton" for garage door openers is now
< 12V]
EMC compliance question
Re: EMC compliance question