Tuesday, July 6, 2010

First Surface Mount Board

Here's a couple stills of my last build. It's a self contained audio amp based on an NJM386. I got the chip surplus (I never pay retail for anything) so I had to settle for the small outline surface mount package. I made a carrier board for the chip and free-form wired the rest of the circuit inside an up-cycled Japanese eraser box my son gave me. The whole thing is about three inches square and an inch deep, and contains everything, power supply, amp, and speaker. Now I need to make an instrument to plug into it.

The plastic didn't hold up to the drilling like I had assumed it would, and my layout wasn't real precise, so it's a little funker looking than originally planned, but I think it works ok.

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