Editing Barrel Power Jack

Jump to navigation Jump to search

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.

Latest revision Your text
Line 4: Line 4:
 
[[Image:Main-Barrel-Connector.jpg|Barrel Jack]]
 
[[Image:Main-Barrel-Connector.jpg|Barrel Jack]]
 
|}
 
|}
<b>Description:</b><br> This is the basic barrel power jack. Commonly used with wall-warts to get power onto your board. These come in a variety of sized. 5.5mm OD with a 2.1mm ID (the pin in the middle) is a common size. For DC systems, you also have to know the polarity : ''center positive'' means the center pin is positive and the outer shield is grounded;  ''center negative'' means the center pin is grounded and the outer shield is positive. I've always used center positive for DC systems. This connector and many other stereo type connectors have more than just two connections. For most applications, one pin on the connector goes to the center pin, one to the shielding. The final pin on the connector is part of a switch. When there is no barrel inserted into the connector, the switch is open. When a barrel is inserted, the switch is closed. I used to mess this up a lot, something the ground would be disconected, so I now always tie these two pins together on the PCB (both go to ground as shown in the schematic).
+
<b>Description:</b><br> This is the basic barrel power jack. Commonly used with wall-warts to get power onto your board. These come in a variety of sized. 5.5mm OD with a 2.1mm ID (the pin in the middle) is a common size. For DC systems, you also have to know the polarity : ''center positive'' means the center pin is positive and the outer shield is grounded;  ''center negative'' means the center pin is grounded and the outer shield is positive. I've always used center positive for DC systems. This connector and many other stereo type connectors have more than just two connection. For most applications, one pin on the connector goes to the center pin, one to the shielding. The final pin on the connector is part of a switch. When there is no barrel inserted into the connector, the switch is open. When a barrel is inserted, the switch is closed. I used to mess this up a lot, something the ground would be disconected, so I now always tie these two pins together on the PCB (both go to ground as shown in the schematic).
  
 
<b>Documents:</b><br>
 
<b>Documents:</b><br>

Please note that all contributions to OpenCircuits may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see OpenCircuits:Copyrights for details). Do not submit copyrighted work without permission!

Cancel Editing help (opens in new window)