Switch controlling relay?

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slvr-bullet

Member - Posts: 23

Joined: January 21, 2003

Location: Canada

Posted: January 29, 2005 at 4:40 AM / IP Logged

Hello all.

I'm kinda new to this site and am glad I found it Switch controlling relay? -- posted image.

Anyway, I purchased a push button switch but the problem is that it only completes the circuit if the button is held down. Once you release it, it opens the circuit. Is there any way to use an automotive relay with this type of switch so that when I push the button, it activates the relay and turns on my "accessories" and then when I push it again, it turns off my "accessories"?

The switch is similar to this but w/o the green ring.

Any other ideas is more than welcomed.

Mja1962

Copper - Posts: 119

Joined: September 14, 2004

Location: United States

Posted: January 29, 2005 at 6:13 AM / IP Logged

https://www.the12volt.com/relays/page5.asp#mtc

Latched On/Off Output Using a Single Momentary Pulse

Similar to the momentary to constant configuration above, we can engage and disengage the latched output with a single pulse from a switch or an output from an alarm or remote keyless entry. The first pulse from the switch will engage the latch. The next pulse from the switch will disengage the latch.

Here's the same configuration as the one above that you can use if you do not have any *diodes available and/or only want to use SPDT relays. A negative output from an alarm, remote keyless entry, or other device can be used in place of the switch shown in both of these diagrams.

slvr-bullet

Member - Posts: 23

Joined: January 21, 2003

Location: Canada

Posted: January 30, 2005 at 2:11 AM / IP Logged

Thanx, you're the best Switch controlling relay? -- posted image.

Now, if I use either design will it interfere with audio cables (i.e. hum/noise)? This is going in to a location where I have no choice but to place it near audio cables Switch controlling relay? -- posted image.

slvr-bullet

Member - Posts: 23

Joined: January 21, 2003

Location: Canada

Posted: January 30, 2005 at 2:14 AM / IP Logged

Forgot to ask also, can I not just use this design instead of using the 4-5 relays?

Momentary to Constant Output

Once activated by the relay on the left, the relay's coil on the right will stay energized until either ground or 12v(+) is removed. You can do this with another relay. Or try connecting to a 12v(+) switched source instead of a constant one. Or you can have a door trigger activate a relay to break continuity. The variations are practically endless.

sneaky pete

Member - Posts: 3

Joined: November 24, 2004

Location: United States

Posted: January 30, 2005 at 10:02 AM / IP Logged

the latched on/off is probably what you want.

the momentary to constant output will only turn on. you will need another switch to turn it off.

sneaky pete

Member - Posts: 3

Joined: November 24, 2004

Location: United States

Posted: January 30, 2005 at 10:03 AM / IP Logged

the latched on/off is probably what you want.

the momentary to constant output will only turn on. you will need another switch to turn it off.

slvr-bullet

Member - Posts: 23

Joined: January 21, 2003

Location: Canada

Posted: January 30, 2005 at 10:09 PM / IP Logged

Anyone know about this question??

slvr-bullet wrote:

Now, if I use either design will it interfere with audio cables (i.e. hum/noise)? This is going in to a location where I have no choice but to place it near audio cables

Also, my power source is 12VDC @ 500mA, what kind/type/rating of diode do I need?

auex

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Joined: December 23, 2002

Location: Arizona, United States

Posted: January 30, 2005 at 10:23 PM / IP Logged

Will it interfere with audio cables, no more then anything else. I guess it would depend on how much current is going through this circuit. Also you have to use the first diagram posted.

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ff-mike

Copper - Posts: 199

Joined: November 15, 2004

Location: United States

Posted: February 01, 2005 at 10:00 AM / IP Logged

Interference It should not interfere as this is a DC power circuit. Interference happens from changing current (AC or pulsating DC).

Diode Ratings[/b} You answered the question yourself when you stated 12C @ 500mA. Double it and you should be fine

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slvr-bullet
Member - Posts: 23

Joined: January 21, 2003
Location: Canada
Posted: February 01, 2005 at 5:06 PM / IP Logged

ff-mike wrote:

Interference It should not interfere as this is a DC power circuit. Interference happens from changing current (AC or pulsating DC).

Diode Ratings[/b} You answered the question yourself when you stated 12C @ 500mA. Double it and you should be fine

I'm kinda illiterate when it comes to this stuff What do you mean by "double it"?

Also, yes this is a DC power circuit but it will be residing near audio equipment that is powered by AC. Will it still be ok??

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