Reverse Polarity Every Time From Single Input

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=145443
Printed Date: May 04, 2025 at 4:28 AM

Topic: Reverse Polarity Every Time From Single Input

Posted By: landmaster1
Subject: Reverse Polarity Every Time From Single Input
Date Posted: June 05, 2019 at 1:42 AM

Hello,
I cannot seem to find a simple way to reverse the output polarity of a set of relays every other time the signal is generated.
Basically I am wanting to lock/unlock actuators with one button.
I thought I remembered a relay system that could do this. I saw your latching relay with two outputs - I could send one output to a DPDT relay or a set of SPDT relays but I am having a hard time finding mechanical latching relays these days.
Thank you in advance,
Ray

Replies:

Posted By: cpalmer
Date Posted: June 05, 2019 at 8:53 PM

Any chance you have a signal coming from your lock system that will tell you if the vehicle is locked or unlocked? For example a wire coming out of the actuator that gives you a ground signal when the door is locked.

Posted By: landmaster1
Date Posted: June 06, 2019 at 10:36 PM

I am building it from scratch on a 69 Chevelle. I am using basic + - - + actuators, so no feedback. I actually am building it after coming across this 12volt site and getting MANY ideas. It will be 100% relay/diode/433mhz controlled.

Posted By: i am an idiot
Date Posted: June 07, 2019 at 6:06 AM

A magnet attached to the lock rod along with a magnetic alarm switch using the normally open contacts could give him a ground when locked situation.

Posted By: landmaster1
Date Posted: June 12, 2019 at 1:18 AM

Hello all, I figured out a work around with my hardware.
Thanks anyway for the help.
I am running 11 channels from my original 8, that frees up buttons for separate inputs.

    __________________________________________
   |           \|/
   |            \
____BT phone____ |      ___remote control___        ___SLAVE board__
[BOARD of 4    ] |      [    BOARD of 4    ]        [GANG/BANK of 4]
[1 NO or NC   ]-/       [1 MOMENTARY NO/NC ] - - - > [    ganged    ]1A or 1B \
[2 open channel]        [2 MOMENTARY NO/NC ] - - - > [    ganged    ]2A or 2B \\__\ Forwards remote board 1-4 to A or B based on BT 1 setting.
[3 open channel]        [3 MOMENTARY NO/NC ] - - - > [    ganged    ]3A or 3B // /
[4 open channel]        [4 MOMENTARY NO/NC ] - - - > [    ganged    ]4A or 4B/
----------------        --------------------        ----------------
3 channels8 channels

They are ganged as;           Throttle UP, DOWN, Engine START, STOP (carburetor needs to be pumped and fast idle)
     then when switched it is Locks UNLOCK, LOCK, Windows UP, DOWN posted_image

Posted By: landmaster1
Date Posted: June 12, 2019 at 1:20 AM

The ASCii image got messed up with word wrap etc... Sorry folks.

Posted By: landmaster1
Date Posted: July 23, 2019 at 9:57 AM

If anyone cares I ended up using a digital FlipFlop Relay.
Here is the nearly finished panel. posted_image