Looking for good 24volt cigarette plug adapter.

[Turner]

Anybody have any good products they are using to safely charge/run 12v devices on a 24-28v electrical system in the aircraft? I have seem co-workers use those cheap usb plugs and eventually melt them, or fry their devices. I'm not willing to risk it! I was looking into 24v adapters and step down resistor products, but I wanted to check here first to see if anybody has a good go-to. Thanks!

[MLH]

http://www.sportys.com/pilotshop/voltage-converter-10-amp.html

[Turner]

Thanks, I'll try it out.

[iChris]

Anybody have any good products they are using to safely charge/run 12v devices on a 24-28v electrical system in the aircraft? I have seem co-workers use those cheap usb plugs and eventually melt them, or fry their devices. I'm not willing to risk it! I was looking into 24v adapters and step down resistor products, but I wanted to check here first to see if anybody has a good go-to. Thanks!

 

Don’t spend a lot of money on a fancy prefab product. We’re talking about a simple DC to DC converter. The first thing you need to do, is determine your power requirement. Is this a 12V @ 5A requirement or do you need 12V @ 20A. If you only need 12V @ 5A, you can find one for about $12 or 30A for around $30.

 

You mentioned USB in your post, if that’s the case, you’ll only need about two amps to charge and power cell phones or iPads. In fact, most of your apple type car chargers use an LM7805 regulator or similar electronic component part, selling bulk around .45 cents. You could buy a LM7805 off the shelf for about $1.50

 

The wiring and connectors can be picked up, fairly cheap, at your local electronic store, hardware store, electronic surplus, or auto store.

 

Below are links to a few low cost solutions:

 

http://www.ti.com/lit/ds/symlink/lm7805c.pdf

 

DC 12V 24V to USB 5V 3A 15W Converter Regulator (Direct to USB)

 

L7812 LM7812 three terminal voltage regulator module 12V voltage regulator

 

Converter 15-35V 24V to 12V Buck Converter Voltage Regulator 60W/5A Step-down Voltage

 

DC/DC Converter Regulator 24V Step Down to 12V 20A 240W

 

24V DC to 12V DC Power Step Down 720 Watt Converter with PMW Technology

Edited February 4, 2016 by iChris

[MLH]

You can indeed roll your own, but considering the time value of money in rounding up all the parts and building them into an enclosure, you'll likely find that all totaled the cost will be at least double what you can get it for off the shelf as a completed unit.

[MLH]

Here are a few other options if you don't mind adding the connectors:

 

http://www.ebay.com/itm/New-Waterproof-DC-DC-Converter-Regulator-24V-Step-down-to-12V-120W-10A-US-Seller-/371112750328?hash=item56680b2cf8:g:5OsAAOSwhkRWfli4

 

 

http://www.ebay.com/itm/New-24V-to-12V-DC-DC-Car-Power-Supply-Converter-Conversion-Device-30A-/131352916712?hash=item1e953e72e8:g:XAsAAOxyVaBSqBfY

 

 

Mike

[Turner]

Thank you guys for the replies. I do like to tinker with electronics, but i did decide to go with the pre-fab option on this. I like the simplicity of having it all contained, and not having to worry about anything shorting out and causing an electrical fire in flight.