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What is a ON-ON-ON switch used for?

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rparigor(at)SUFFOLK.LIB.N
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Posted: Fri Mar 06, 2009 9:45 am Post subject: What is a ON-ON-ON switch used for?

What is a ON-ON-ON switch used for?We are in process of balancing illumination on our bird at the moment.I would rather have a mini four pole triple throw switch than a four pole double throw switch (center off) to accomplish task at hand.Hmmm, Newark sells a mini four pole double throw switch with three positions and it is called ON-ON-ON.For under 4 bucks I ordered one.Not useful for me. The way it works is with the toggle in the up position the center common is connected to the lower ON. With toggle in the middle position the common is connected to the upper ON, and with toggle in the down position the common is connected to the upper ON.In other words this switch does the exact same thing with the toggle in the middle and down position. What exactly is a switch like this used for with two positions doing exactly the same thing?I don't have much space (rotary switch?) is there such a thing as a four pole, triple throw three position mini toggle switch with three positions and 16 terminals?If so where can you get one?I can make do with a 4 pole, double throw with center off but the 4PTT would be "much more better" if such a thing exists.I want to control intensity of several different light sources to achieve a "Day", "Night" and "Dark night" level of intensity. Since all the light sources are different (one linear regulator would not cut it), will choose resistors that are close to what I want, and fit mini potentiometers to fine tune. A DPDT could have up "Day", down "Night" and "Dark night" could use middle to turn everything off. A triple throw would allow me to have 3 intensities.Thx.Ron Parigoris   [quote][b]

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nuckolls.bob(at)aeroelect
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Posted: Fri Mar 06, 2009 3:01 pm Post subject: What is a ON-ON-ON switch used for?

At 11:39 AM 3/6/2009, you wrote:

  	  Quote: 	
		  What is a ON-ON-ON switch used for?



 We are in process of balancing illumination on our bird at the moment.



 I would rather have a mini four pole triple throw switch than a four pole double throw switch (center off) to accomplish task at hand.



 Hmmm, Newark sells a mini four pole double throw switch with three positions and it is called ON-ON-ON.



 For under 4 bucks I ordered one.



 Not useful for me. The way it works is with the toggle in the up position the center common is connected to the lower ON. With toggle in the middle position the common is connected to the upper ON, and with toggle in the down position the common is connected to the upper ON.



 In other words this switch does the exact same thing with the toggle in the middle and down position. What exactly is a switch like this used for with two positions doing exactly the same thing? 	


   They are not doing the same thing.  ON-ON-ON is progressive

   transfer as described in detail in the chapter on switches.

   The 4-pole device can be wired to emulate a two-pole, three-position

   switch.



 

  	  Quote: 	
		  I don't have much space (rotary switch?) is there such a thing as a four pole, triple throw three position mini toggle switch with three positions and 16 terminals?



 If so where can you get one?I can make do with a 4 pole, double throw with center off but the 4PTT would be "much more better" if such a thing exists.



 I want to control intensity of several different light sources to achieve a "Day", "Night" and "Dark night" level of intensity. Since all the light sources are different (one linear regulator would not cut it), will choose resistors that are close to what I want, and fit mini potentiometers to fine tune. A DPDT could have up "Day", down "Night" and "Dark night" could use middle to turn everything off. A triple throw would allow me to have 3 intensities.



 Thx.

 Ron Parigoris

 	


   Grayhill 



 

    #51PT30-01-4-03N



  http://tinyurl.com/bsws4r 



 

 

        Bob . . .



        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------



     [quote][b]

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klehman(at)albedo.net
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Posted: Fri Mar 06, 2009 3:04 pm Post subject: What is a ON-ON-ON switch used for?

Ron



Have you considered putting a diode in series with each of your lighting 

circuits and just using a single pole switch instead of four poles. A 

0.6 volt drop from a 10 cent diode usually doesn't dim full brightness 

very much with a 14+ volt supply. I might be missing something here 

because I don't see how you will get more than two intensities plus off 

from a double throw switch though.



I found it more satisfactory to fit 4 miniature pots. Electronic dimmers 

can always be remotely located from the pots but I've got 4 LM317 based 

dimmers in a space not much bigger than a cigarette pack and they 

control incandescents, LED's, and EL strips nicely. Somewhat different 

output voltage ranges for each type of light.



Ken

 	  Quote: 	
		   I want to control intensity of several different light sources to 

 achieve a "Day", "Night" and "Dark night" level of intensity. Since all 

 the light sources are different (one linear regulator would not cut it), 

 will choose resistors that are close to what I want, and fit mini 

 potentiometers to fine tune. A DPDT could have up "Day", down "Night" 

 and "Dark night" could use middle to turn everything off. A triple throw 

 would allow me to have 3 intensities.

 

 Thx.

 Ron Parigoris

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rparigor(at)SUFFOLK.LIB.N
Guest

Posted: Sun Mar 08, 2009 7:22 pm Post subject: What is a ON-ON-ON switch used for?

Hi BobThx. for the reply.>>(What is a ON-ON-ON switch used for?)<<"ON-ON-ON is progressive transfer as described in detail in the chapter on switches. The 4-pole device can be wired to emulate a two-pole, three-position  switch."The switch I have is 4 pole, double throw but is an on-on-on switch.Unlike the switch you depict in your book where although 2 positions are on-on, the second pole has the two on positions at the opposite end of throw compared to the first pole. I understand this switch can be wired to accomplish a tripple throw function.The switch I have has all four poles being exactly the same, top and middle toggle position has com and one side connected. I forget if it was the top or bottom row, dosen't matter all the poles are the same row. Then when you put toggle in the bottom position it connects com to the other side, again all poles are the same.My original question stands, what would a switch like this be used for with two positions doing exactly the same thing?Or perhaps the switch was built wrong and should have two of the four poles assembled where the two on positions are opposite each other?Thx.Ron Parigoris>   [quote][b]

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