Sujet : Re: DC relay latching voltage
De : blockedofcourse (at) *nospam* foo.invalid (Don Y)
Groupes : sci.electronics.designDate : 23. Aug 2024, 20:43:48
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vaaoq8$112hi$4@dont-email.me>
References : 1 2 3 4
User-Agent : Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2
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.
…