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What're you up to this weekend?

cstanton

I'm going to tinker with different soundcards I have, USB and PCI to see which is better at storing and playing audio from old vinyl records that I have.

What do/don't you have planned?

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  • Not intended for audio, but using audio op-amps!

    I'm trying to build an amplifier  KiCad 8: Working with Circuit Simulations!  for measuring low-voltage signals. Basically a better iteration of Viewing Noise with a Measurement Amplifier benefiting from the mistakes learned. For instance, I found the very low-frequency response not very useful. 10 Hz is ok. 

    I found 100 Hz low-pass filter wasn't that useful. Also, the switchable gain of 100 and 200 isn't that helpful either. A fixed gain of 100 would be fine.

    I don't think BNC are needed, smaller SMA is more convenient. Replacing batteries is annoying, so a rechargeable battery would be better.

     I think I want switchable low-pass filters at 10k, 100k and 1 MHz. And switchable DC or AC input (10 Hz as mentioned).

    Additional ideas welcome. 

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  • Not intended for audio, but using audio op-amps!

    I'm trying to build an amplifier  KiCad 8: Working with Circuit Simulations!  for measuring low-voltage signals. Basically a better iteration of Viewing Noise with a Measurement Amplifier benefiting from the mistakes learned. For instance, I found the very low-frequency response not very useful. 10 Hz is ok. 

    I found 100 Hz low-pass filter wasn't that useful. Also, the switchable gain of 100 and 200 isn't that helpful either. A fixed gain of 100 would be fine.

    I don't think BNC are needed, smaller SMA is more convenient. Replacing batteries is annoying, so a rechargeable battery would be better.

     I think I want switchable low-pass filters at 10k, 100k and 1 MHz. And switchable DC or AC input (10 Hz as mentioned).

    Additional ideas welcome. 

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