7400 competition entry: Class D amplifier using digital logic

Posted on Monday, November 5th, 2012 in 7400 contest, contest by DP

Class D amplifier using digital logic is the open 7400 competition entry by hasn0life:

The entry is a class D amplifier made entirely out of discrete digital logic components. I took great pains not to use op amps or transistors or any active devices besides logic gates. Though the amplifier outputs square waves, the process to generate them is entirely analog. As such, this design is an example of using digital gates in an analog way.

Check out the video after the break.

This entry was posted on Monday, November 5th, 2012 at 1:00 pm and is filed under 7400 contest, contest. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

2 Responses to “7400 competition entry: Class D amplifier using digital logic”

  1. Amnobis Mobitar says:

    Nice one! Is there a link for the schematics / documentation??

  2. Graham says:

    You can find more details at – I should probably learn to make that clickable.

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