DC Entries: Last Batch

Here’s the final batch of entries we received and considered for the Design Challenge.

[Chris] sent in a stereo amplifier (watch out for pop-ups) designed for iPods (or similar) using LM386 amps and a minimal parts count.

[Fabian] submitted this excellent tube amp. It’s based on the ECC83/12AX7 tube, and runs off a mere 12-14VAC.

[Edgar] sent in this combination PIC/AVR programmer.

Finally, we’ve got a simple PIC/EEPROM programmer by [Ian]. (view the unzipped version here)

15 thoughts on “DC Entries: Last Batch

  1. hi, i was the one who posted the tube amp. it’s pretty easy to build since it needs no biasing or adjustments. But I can write a more detailed instruction for building and tweaking the amp. It will take me a few days, however…

  2. awesome tube amp. but i’m having some trouble getting started.

    does anyone have a part list for digi-key or other distributor? im having trouble find parts for this sweet tube amp.

  3. Thanks to Chris for adding the .ISO files. I don’t really want or need one but hey, I’m sure I have the parts laying around and if the work is already done for me, why not. Thanks!

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