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ledmania ledmania is offline

diyAudio Member

About Me

  • About ledmania
    Biography
    Electronics hobbyist for 35 years
    Location
    Manila.Ph.earth
    Interests
    DIY electonics,circuit designing
    Occupation
    self employed
    Country
    Philippines
  • Signature

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General Information
  • Last Activity: 10th March 2014 02:14 PM
  • Join Date: 12th February 2005

Blog

View ledmania's BlogRecent Entries
Latest Blog Entry

Posted 9th July 2010 at 08:17 AM by ledmania Comments 5
Posted in Uncategorized
This blog may provide interest to some newbie looking for low cost, easy to build class d amp source tuned to their listening taste. I have already tried this circuit on the breadboard and it sounds surprisingly good but I’m sure it will work much better on PCB of course. The timer chip I used is the CMOS LMC555 because it’s a lot faster than bipolar counterpart such as 15 ns rise and fall times and can oscillate up to 3 MHz @ 5V. Of course you can use bipolar 555 timer as well.
About the circuit:
The circuit consist of 2 classical yet popular configurations; The master wired as “astable multibivrator” and the slave as “one shot” monostable.

http://geekcircuits.com/wp-content/u...ive-filter.png
Figure 1.
Slave A is an active band pass filter tuned to 20 Hz with +/-7 Hz bandwidth serving as “mega bass enhancer” while slave B is a simple high pass filter with -3db roll-off at 7 KHz for the treble. Slave C will fill-in...
Recent Comments
Take your time, wait...
Posted 20th July 2010 at 06:21 AM by ledmania ledmania is offline
Hi Tom, just wondering...
Posted 19th July 2010 at 11:29 AM by wintermute wintermute is offline
Yes, you are correct,...
Posted 17th July 2010 at 04:59 AM by ledmania ledmania is offline
Interesting.
...
Posted 17th July 2010 at 04:32 AM by gootee gootee is offline
An original approach!...
Posted 13th July 2010 at 02:23 PM by regiregi22 regiregi22 is offline
Hide this!Advertise here!

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