Paul's Posts

More from Paul

1. Bucking trendsIn yesterday's post we learned that the size of a switching power supply is so much smaller than a conventional linear supply because the power transformer...February 1, 2013
2. ChoppersYesterday I explained that the higher the incoming AC frequency to a power transformer, the smaller that transformer can be to deliver energy. In fact, get...January 31, 2013
3. Smaller is betterBoy, that sounds like a no-win claim. :) In the case of a transformer, however, bigger is always better relative to what the designer is trying...January 30, 2013
4. TransformersIn yesterday's post we covered the reason why we need a power supply: getting the correct voltage to our equipment and providing safety isolation from the...January 29, 2013
5. SMPSSwitch Mode Power Supplies, or SMPS, just sounds nasty. No, not the supply itself but the word "Switch Mode". Shades of choppy, digital, not linear, radiating,...January 28, 2013
6. Audio clubsSaturday night in mid February we will be hosting the Colorado Audio Society as they hold their annual elections. The CAS group are the same folks...January 27, 2013
7. A day in Sea CliffFollowing yesterday's post about output impedance I was reminded of a day in Sea Cliff New York where HP (Harry Pearson) the founder of TAS lives....January 26, 2013
8. Having enough juiceOne of the hotly debated issues amongst designers is current capabilities of an output stage on a DAC or preamplifier. It's number 8 on our list...January 25, 2013
9. Are you sure?Lars, one of our newest readers, responded to the January PS Audio Newsletter's request for suggestions on what you'd like me to write about by asking...January 23, 2013
10. Single or double?Number 7 in our list of design challenges for a DAC or a preamplifier output stage is providing a single ended or balanced output. As in...January 22, 2013
11. Looking in the wrong placeExpanding on yesterday's post for a moment, the question came up why some amplifiers seem to sound better despite their higher levels of THD and IM...January 21, 2013
12. OvertonesHow does one measure the differences between amplifiers when they clearly sound different? The first and simplest measurements are frequency response and noise levels: frequency response...January 20, 2013
13. Linear performanceOne of the items in our list of 9 for the output stage requirements of a DAC or preamplifier is linear performance. So, what's that mean...January 19, 2013