Sujet : Re: DC relay latching voltage
De : llc (at) *nospam* fonz.dk (Lasse Langwadt)
Groupes : sci.electronics.designDate : 24. Aug 2024, 13:32:06
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vacjs6$1d0gn$1@dont-email.me>
References : 1 2 3 4 5
User-Agent : Mozilla Thunderbird
On 8/23/24 21:43, Don Y wrote:
On 8/23/2024 7:36 AM, John Robertson wrote:
I assume you have the normal back diode across the coil for clamping the ringing voltage.
If you care about the life of the relay (and how well it "opens"),
a better approach is to add a zener rated at the coil voltage in
series with that diode. The diode, by itself, delays opening of
the contacts and leads to more opportunities for arcing. The
zener speeds up this transition.
or use a fet that is avalanche rated or has build in clamping
Re: DC relay latching voltage