man on, stay on until off, stay off
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=116105
Printed Date: May 19, 2025 at 10:39 AM
Topic: man on, stay on until off, stay off
Posted By: jonsun
Subject: man on, stay on until off, stay off
Date Posted: September 04, 2009 at 9:56 PM
I need to construct a circuit for 12V cig lighter to only supply power after I have manually and momentarily switched this new circuit on after having started engine. I need it to keep 12V supply up until ign is switched off, and not supply power until I again switch on with momentary switch once engine is running. It is to power a pda adapter 12V to 5V max 420mA. A latching relay term comes to mind, not sure if it exists in 12V. It is to power an item that requires this to avoid suen current changes
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my other car is a SUBARU too!
Replies:
Posted By: i am an idiot
Date Posted: September 04, 2009 at 10:09 PM
https://www.the12volt.com/relays/page5.asp#lspSubstitute 12 volt ignition where it says 12 volt constant in the diagram.
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