hat
Pou tès yo mwen monte tablo a anplifikatè sou yon koule chalè gwo olye. Li konsiste de yon cm plak 10 * 20 kòb kwiv mete nan 6mm epesè, nan ki mwen soude 20 najwar, te fè nan 0.5mm fèy kòb kwiv mete, mezire tou 10 * 20cm chak, li te gen bor soudaj L-ki gen fòm. Mwen te fè sa a chalè koule kèk mwa anvan pou rezon ankèt (gade nan paj tèmik konsepsyon mwen), ak depi li te kouche alantou, mwen te itilize li. Men, avèk dissipation la pouvwa manm nan sa a anplifikatè yo te yon bagay tankou Watts 50, se yon koule chalè pi piti anpil ta bon ase, si se yon ti fanatik itilize. Toujou, yon epandeuz chalè kòb kwiv mete se yon bon lide, paske se tranzistò la pouvwa itilize nan Rating maksimòm li yo.
eng
For the tests I mounted the amplifier board on a rather large heat sink. It consists of a 10 * 20 cm copper plate of 6mm thickness, to which I soldered 20 fins, made of 0.5mm copper sheet, measuring also 10 * 20cm each, having L-shaped soldering edges. I made this heat sink some months before for investigation purposes (see my thermal design page), and since it was lying around, I used it. But with the total power dissipation of this amplifier being something like 50 watts, a much smaller heat sink would be good enough, if a small fan is used. Still, a copper heat spreader is a good idea, because the power transistor is used at its maximum rating.