This shows you the differences between two versions of the page.
Both sides previous revision Previous revision | Next revision Both sides next revision | ||
x0x:voltagecontrolledfilter [2007/09/30 16:29] hl-sdk |
x0x:voltagecontrolledfilter [2007/10/05 19:04] hl-sdk |
||
---|---|---|---|
Line 12: | Line 12: | ||
{{x0x:media:vcfblock.png|}} | {{x0x:media:vcfblock.png|}} | ||
+ | |||
==== Transistor Ladder ==== | ==== Transistor Ladder ==== | ||
Line 21: | Line 22: | ||
Another "flaw" might be that the original Moog ladder filter had resistors connected from the common base of Q22, all the way down the ladder, and eventually connected to ground. Where as the TB303 and x0xb0x uses a single resistor, and connects that to a capacitor and then ground. | Another "flaw" might be that the original Moog ladder filter had resistors connected from the common base of Q22, all the way down the ladder, and eventually connected to ground. Where as the TB303 and x0xb0x uses a single resistor, and connects that to a capacitor and then ground. | ||
- | Here is a link to a Moog filter schematic for comparison: [[http://www.synthdiy.com/files/1/20011020/moogvcf_schematic.gif]] | + | Here is a link to a Moog filter schematic and board (to build your own!) for comparison: [[http://dropmix.xs4all.nl/rick/Emusic/Moog/]] |
==== Amplifier ==== | ==== Amplifier ==== |