hat
Ou pral gen fè egzèsis e li te koupe soti ouvèti yo pou tranzistò yo. se tranzistò la pouvwa monte soti nan pi wo, pandan y ap transistor a chofè, akòz wotè ti li yo, se monte anba tablo a. Tou de tranzistò yo monte apre soudaj feuilles kòb kwiv mete nan ouvèti yo PCB, yo rantre nan groundplanes Dlo Anwo ak pi ba, ak tranzistò a chofè tou te gen sa yo espageti kòb kwiv mete konekte baz ak pèseptè kousinen yo nan bò a anwo nan tablo a. Isit la ou ka wè ki jan tranzistò yo ap soude nan tablo a, ak bag yo mwen itilize yo bay li wotè ki kòrèk la. M 'premye monte tablo a epi tranzistò radyateur a, lè sa soude tranzistò a pwodiksyon nan dantèl, lè sa a fofile soude mennen emeteur tranzistò a kondwi a soti nan pi wo a, nan ouvèti a, lè sa a ankò retire tablo a epi soude tranzistò a chofè yo totalman. Nan fason sa a se apwopriye anfòm nan mekanik asire. Asire w ke tranzistò a aliye sifas yo plat! tranzistò pouvwa mwen vin rive ak yon sifas ki yon ti kras awondi, se konsa m 'premye te gen nan sab li plat! Sa a se kritik pou bon transfè chalè. Natirèlman, sèvi ak bon grès tèmik lè finalman aliye anplifikatè a Radyateur la.
eng
You will have to drill and cut out the openings for the transistors. The power transistor is mounted from above, while the driver transistor, due to its small height, is mounted under the board. Both transistors are mounted after soldering copper foils into the PCB openings, to join the upper and lower groundplanes, and the driver transistor also has such copper straps connecting the base and collector pads to the upper side of the board. Here you can see how the transistors are soldered to the board, and the spacers I used to give it the correct height. I first mounted the board and transistors to the heatsink, then soldered the output transistor in lace, then tack soldered the drive transistor's emitter leads from above, through the opening, then again removed the board and soldered the driver transistor fully. In this way the proper mechanical fit is assured. MAke sure the transistor mounting surfaces are flat! My power transistor came with a slightly rounded surface, so I first had to sand it flat! This is critical for good heat transfer. Of course, use good thermal grease when finally mounting the amplifier to the heatsink.