Andrew L Weekes
Reverse Engineer
Something that might be of interest to all you budding tweakers out there.
I've just recently re-built my measurement kit for PSU testing with excellent results.
I use a good quality PC soundcard, with a low-noise, high gain buffer amplifier to protect the inputs and increase the measurement resolution.
Another interesting use for it though, is to listen to your PSU's!
This is an interesting assesment method, that tells you more about the likely impact of the PSU, sonically, than many other methods. The buffer amplifier can be used to drive a pair of headphones (or fed into an existing amp) and you can probe bits of circuitry and hear whats going on.
You'll hear hiss, hums, buzzes and even the audio itself in some circumstances. They will tell you a lot about what's going on on the power rails of your device. You'll obviously notbe able to hear the supersonic stuff, but it should prove enlightening all the same!
It's easy and fun to construct and demonstrates some great build techniques that are easy, yet can achieve great results for the little effort involved.
The following posts will give more detail, so please be patient!
Andy.
I've just recently re-built my measurement kit for PSU testing with excellent results.
I use a good quality PC soundcard, with a low-noise, high gain buffer amplifier to protect the inputs and increase the measurement resolution.
Another interesting use for it though, is to listen to your PSU's!
This is an interesting assesment method, that tells you more about the likely impact of the PSU, sonically, than many other methods. The buffer amplifier can be used to drive a pair of headphones (or fed into an existing amp) and you can probe bits of circuitry and hear whats going on.
You'll hear hiss, hums, buzzes and even the audio itself in some circumstances. They will tell you a lot about what's going on on the power rails of your device. You'll obviously notbe able to hear the supersonic stuff, but it should prove enlightening all the same!
It's easy and fun to construct and demonstrates some great build techniques that are easy, yet can achieve great results for the little effort involved.
The following posts will give more detail, so please be patient!
Andy.