Posted on Feb 23, 2013

This de adapter provides a regulated 9-V source for operating a Kenwood TR-2500 hand-held transceiver in the car. The LM317T`s mounting tab is electrically connected to its output pin, so take this into account as you construct your version of the adapter.

Click here to download the full size of the above Circuit.

The LM317T regulator dissipates 2 or 3 W in this application, so mount it on a 1-x -2-inch piece of "is-inch-thick aluminum heatsink.

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