Progress so far - diyAudio
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Progress so far

Posted 6th January 2012 at 12:02 PM by rjm
Updated 7th January 2012 at 02:00 AM by rjm

The first stage is getting the power supply installed and running. That's the little board by the transformer, which just has the diodes, main filter capacitors, and isolation resistors on the voltage rails. The case top lid is transparent plexiglass, so the internals are lit by three white LEDs to show off, and light the control labels, which are printed on the top lid rather than the front and back sides of the case.

You'll notice I have followed the instructions and removed the plastic covers on the electrolytic capacitors.

For the record I do think they sound better that way, I just normally can't be bothered as, for example, my phonoclone 3 boards have 28 of them and I consider the exposed metal surfaces a bit of a safety issue as well.
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Total Comments 2

Comments

  1. Old Comment
    Hi,

    Remove the plastic covers on the electrolytics don't seem a good practice:

    En busca de un DAC DIY...

    The text are from Cyril Bateman:

    http://web.archive.org/web/200910270...wnloads_5.html

    Happy days
    permalink
    Posted 4th March 2012 at 04:36 PM by raul_77 raul_77 is offline
  2. Old Comment
    rjm's Avatar
    Quote:
    Aluminium electrolytic capacitors housed in aluminium cases are supplied with a plastic oversleeve,
    which serves two purposes, it is easily printed with capacitance and voltage etc., but more important this
    sleeve actually dissipates heat more rapidly than does the bare aluminium can, so must never be
    removed.
    Filter caps in audio applications are low ESR and low current, the losses are never such that the capacitor gets warm, casing or no casing.

    The reason you might not want to remove this plastic casing is electrical, the exposed metal can be at high voltages and shorting same may cause injury and/or damage the circuit.
    permalink
    Posted 28th March 2012 at 08:04 AM by rjm rjm is offline
 
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