I've built a device (antenna preamp) that needs power, I've been feeding it
piles of transistor radio batteries. I want to power it with a suitable,
generic, dc wall wart. I have several. They have cords with standard sockets
(female) on the end for their output.


Where do I get the plug (male) that goes on the device? I can't find them. Searches get the wall warts
themselves. I have no idea what the official name is. I could use either a PC board one or
one on the end of a few inches of wire. Mouser and Digikey must have them ... but where?

I don't want to tear the socket (female) off the wall wart's cord.

This may help

https://www.digikey.com/products/en/cab ... %20adapter

Thanks ... those will do if I can figure out the size, or buy several.

If it's going to be permanent, why not just cut off the socket, and hard wire it to your device?

This may help

https://en.wikipedia.org/wiki/Coaxial_power_connector

Because its for a portable device that needs to run on batteries. I have spare sockets
from dead wall warts, to connect to the battery.

DC power jack

https://www.allelectronics.com/index.ph ... POWER+JACK

Jimmie Stewart

How about a 9V battery connector:
https://www.amazon.com/1-X-9V-Battery-C ... B001F39728

That's it! At Chinese prices.

The problem with switching to the batter connectors is that it would be easy to
short the power supply output. I'm using a battery one now since it fits the battery.