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what case is that? (yes i realize there's two of em ) could you give a picture of the pimeta inside the case so i can see how much space there is in there relative to the pimeta pcb? thanks
In "normal condition", you can indeed hardly measure or hear any differences between with or without an AC line filter in the power supply.
The added value of an AC-line filter become evident in environment where grumpy refrigerator or other pollutive devices (for the AC line) are used.
When a grumpy refrigerator starts grumping/humming for example, the AC line filter is there to keep the pollution out of the power supply/amplifier .
(It's a kind of air bags built in cars for the case that ...)
The added value of an AC-line filter become evident in environment where grumpy refrigerator or other pollutive devices (for the AC line) are used.
When a grumpy refrigerator starts grumping/humming for example, the AC line filter is there to keep the pollution out of the power supply/amplifier .
(It's a kind of air bags built in cars for the case that ...)
Oh jeah, my case is 100% like you described. I do not have a line filter now, but definately will get one. Everytime the fridge start, I hear a loud snap etc. Also, when I put the oven on...
However there are indeed some circuit variations for AC line filter, the basic circuit looks mostly like the AC line entree as implemented on Tangent's STEPS (the part before the transformer on the schematic). Same circuit can be seen on top of this AC line filter:
It's simply a network of inductors and capacitors (LC-network) which functions as a passive filter. The only thing you have to pay attention to when you are looking for one is the current rating of it. It should be rated higher than the expected current surge (at power on) that possibly flows through such a filter. Peak current surge is depending on the PS design (i.e. the main filter capacitors on the PS). For small amps like the SOHA is a regular AC line filter which often built in power switches, rated at 3-4A is more than adequate.
its the backpanels for my Darwin switchbox and Pimeta
fully loaded
My Pimeta is almost finished, just waiting to finalize the front panel design and the Cascodes for Class-A biasing. Had to tip the caps as the Elna Cerafine 1000uf/35v were too big. Put pin headers on all in/outputs and socketed the R3-R8 block. Got 2 stacked buffers per channel and AD8610/AD8620 op-amps. Vishay Dale resitors all around except RLED. Love those scewered hot dogs Sounds sweet indeed.
) could you give a picture of the pimeta inside the case so i can see how much space there is in there relative to the pimeta pcb? thanks 
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Linear Mode
