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Power Switch and/or Charge Jack

Old 11-08-2005, 08:31 PM
  #1  
Curmudgeon
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Default Power Switch and/or Charge Jack

Can somebody provide a link or contact info for a source of small toggle or slide switches for use as a battery On/Off switch? The flight power switches that come with many TX/RX packages are larger than I would like to use. Obviously, a small switch may not support the kind of current levels found in e-planes, so the source should include this type of information.

Another item that might actually be better for R/C planes would be a circuit-breaking jack/plug set. If you are not familiar with these, when you insert the plug, the jack breaks a circuit. This provides a nearly fool-proof way to arm (turn on power) an electric motor circuit. Such an "On/Off" system can also function as a charging jack. The only one of these that I have found so far is the "Blackjack". It appears to be a quality item, but at $10 a pop, it would be nice to compare the Blackjack to possibly cheaper alternatives.

TIA

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Old 11-08-2005, 11:46 PM
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Default Blackjack?

Originally Posted by Curmudgeon View Post
Can somebody provide a link or contact info for a source of small toggle or slide switches for use as a battery On/Off switch? The flight power switches that come with many TX/RX packages are larger than I would like to use. Obviously, a small switch may not support the kind of current levels found in e-planes, so the source should include this type of information.

Another item that might actually be better for R/C planes would be a circuit-breaking jack/plug set. If you are not familiar with these, when you insert the plug, the jack breaks a circuit. This provides a nearly fool-proof way to arm (turn on power) an electric motor circuit. Such an "On/Off" system can also function as a charging jack. The only one of these that I have found so far is the "Blackjack". It appears to be a quality item, but at $10 a pop, it would be nice to compare the Blackjack to possibly cheaper alternatives.

TIA

The Curmudgeon
So where does one get Blackjack?
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Old 11-09-2005, 12:04 AM
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Curmudgeon
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You can get them at NCFM.

The link: http://www.northcountyflyingmachines.com/blackjack.htm

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Old 11-09-2005, 11:54 PM
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Originally Posted by Curmudgeon View Post
You can get them at NCFM.

The link: http://www.northcountyflyingmachines.com/blackjack.htm

The Curmudgeon
I looked at their products, but don't need the charge connectors. I asked for the P/N of the switch/jack and they referred me to Mouser.com which is the source for the parts, but it is impossible to find a particular item without a part number. You don't happen to know what it is by chance?
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Old 11-10-2005, 01:37 AM
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Curmudgeon
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Simibill -
I don't have any part numbers. However, most jacks and plugs you might obtain would be adequate.

Thanks to all who have replied to this and a duplicate posting on the RCGroups forum, I have been able to find these plugs and jacks on various websites for substantially less money than the factory-constructed versions. A little soldering is a small price to pay.

IMO, the maximum current spec is the most critical, as voltage and other specs are way more than adequate for modeling purposes. Given an appropriate mounting, most that I have seen should work fine.

As to what would be an acceptable maximum current for an electric motor, test stand experimentation would be in order. A worst case scenario would be that a high motor current might weld switch-jack contacts together, ruining your ability to break the circuit with the plug. Intuition tells me that this may not be an issue in our hobby, but I will certainly check it out to learn what to expect.

Here are some links for these components:
http://www.hollyday.com/rich/hd/sail...witchjacks.htm
http://www.philmore-datak.com/Page%2062.pdf
http://www.switchcraft.com/products/jack-113.html
http://www.switchcraft.com/products/jack-120.html
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