b42/ notes/ amp

Amplifier

Building an amplifier.

Final part list

  • (500 Kč) LM4780-based power amp module [ezk,gme]
  • (300 Kč) PSU [ezk,gme]
  • (450 Kč) Toroidal transformer, 2x22V, 120VA [gme]
  • (450 Kč) Heatsink, 1.2K/W [ges]
  • (150 Kč) Power connector+fuse+switch [gme]
  • (200 Kč) Wires & connectors
  • (TBD) Chassis
  • (TBD) Potentiometer
  • (2050 Kč) Total

Plan B: Building it from pre-made kits

Power amp       469 Kč  [ezk](http://www.ezk.cz/stavebnice_moduly/kjd4780.htm)
PSU             269 Kč  [ezk](http://www.ezk.cz/stavebnice_moduly/nzd7a25_nzd8a35_nzd9a50_nzd9a63_nzd9a99.htm) [gme](http://www.gme.cz/stavebnice-regulovatelnych-zdroju/f-e-nzd9a50sx-p760-654/)
Toroid      600-800 Kč  (2x24-2x30, 150-200 VA)
Heatsink        500 Kč  (no fan, need bigger?) [ezk](http://www.ezk.cz/chladice.htm) [ges](http://www.ges.cz/cz/v-6506e-GES06800486.html)
Chassis         750 Kč  KK2U-26001, KK07-231 [ezk](http://www.ezk.cz/krabicky_kovove.htm) [modushop](http://www.modushop.cz/galaxy-m-4mm-panel.html) (210x230)
Connectors      500 Kč
Protection      600 Kč  [ezk](http://www.ezk.cz/stavebnice_moduly/xsj2168.htm) [gme](http://www.gme.cz/stavebnice-vykonovych-audio-zesilovacu/f-e-xsj2168sx-p760-586/)

GainClone

  • https://en.wikipedia.org/wiki/Gainclone
  • http://www.decdun.me.uk/gainclone.html
  • http://diyaudioprojects.com/Chip/DIY-TDA2050-Hi-Fi-Chip-Amplifier/
  • http://www.mhennessy2.f9.co.uk/gainclone/index.htm
  • http://incise.org/gainclone.html

LM4780

  • Datasheet: www.national.com/ds/LM/LM4780.pdf GME: http://www.gme.cz/nf-koncove-zesilovace/lm4780ta-p313-915/ (300 Kč) GME (EZK) stavebnice: http://www.gme.cz/stavebnice-vykonovych-audio-zesilovacu/f-e-kjd4780sx-p760-517/

LM3886

GME: http://www.gme.cz/nf-koncove-zesilovace/lm3886tf-p313-926/

Random links

http://diyaudioprojects.com/ krabice: http://www.modushop.cz/ PA03: http://web.archive.org/web/20060311085150/http://czechaudio.com/Projects/PA03/PA03_EN.htm http://www.digilidi.cz/pa03-stavba-zesilovace-pro-zacatecniky kit pix: http://www.audioweb.cz/uploads/2295_p1170149.jpg http://www.audioweb.cz/uploads/2295_p1170150.jpg http://www.audioweb.cz/uploads/2295_p1170148.jpg