3.3V -> 12V relay

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=36315
Printed Date: May 16, 2024 at 11:53 AM

Topic: 3.3V -> 12V relay

Posted By: wazm0
Subject: 3.3V -> 12V relay
Date Posted: July 28, 2004 at 11:54 AM

is there a way to get a low voltage (3.3V) to turn on a relay that would activate a 12v source?

what i want to do is have a neon hooked up to my discman (dont ask lol), i have found a good spot to solder power output to.

So it would Go low power input (batteries) -> Discman-> 3.3V out->Relay->12V + to neon

If u want me to explain better just ask

Replies:

Posted By: xetmes
Date Posted: July 28, 2004 at 2:17 PM

you could just get a lower voltage relay like a 5v relay, Just get one that isnt rated at a high current and has a high coil resistance, to waste less power, or use a transistor (probably a better idea when using batteries)

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