Persamaan Transistor D998 B778 Install «FAST»

Saya membalik papan PCB (Printed Circuit Board). Dengan hati-hati, saya mencoba melepas sisa-sisa transistor yang rusak menggunakan solder sucker . Setelah bersih, saya menelusuri jalur PCB dengan AVO meter.

: A very common substitute often found in similar Indonesian amplifier kits. C5200 / A1943

D998/B778 umumnya berjenis (bodong besar) atau TO-3P . C5200/A1943 berjenis TO-264 (sedikit lebih ramping).

memiliki susunan yang SAMA : B, C, E.

To find a proper equivalent (persamaan), a replacement transistor must meet or exceed these original baseline specifications: NPN (2SD998) / PNP (2SB778) Collector-Emitter Voltage ( VCEOcap V sub cap C cap E cap O end-sub ): 120V Collector-Base Voltage ( VCBOcap V sub cap C cap B cap O end-sub ): 120V Emitter-Base Voltage ( VEBOcap V sub cap E cap B cap O end-sub ): 5V Continuous Collector Current ( ICcap I sub cap C ): 10A Total Power Dissipation ( PDcap P sub cap D ): 80W DC Current Gain ( hFEh sub cap F cap E end-sub ): Typically 55 to 160 Package Type: TO-3P / TO-247 Direct Equivalents and Substitutes (Persamaan Transistor)

Mencari bukanlah hal sulit. Pilihan terbaik dan paling aman saat ini adalah 2SC5200 (NPN) dan 2SA1943 (PNP) . Keduanya adalah "drop-in replacement" dengan spesifikasi yang lebih unggul.

2SB778 + 2SD998 Pair Transistors Bipolar NPN PNP KTB778/KTD998 TO-3P persamaan transistor d998 b778 install

Dengan panduan ini, Anda kini bisa merevitalisasi power amplifier kesayangan Anda menjadi lebih bertenaga dan tahan lama.

Matikan catu daya ( power supply ) dan buang sisa tegangan pada kapasitor elco besar menggunakan resistor beban.

: These are almost always used together in Class AB push-pull amplifiers to handle the positive and negative halves of the audio signal, which significantly reduces harmonic distortion. Saya membalik papan PCB (Printed Circuit Board)

Berapa dari trafo / power supply yang Anda gunakan?

The D998 and B778 were gone, ghosts of a bygone era. But in their place, their modern kin were singing a song of continuity. The Pioneer was alive again, breathing music into the rainy night.

If using a mica insulator, apply a very thin, even layer of thermal grease to of the mica pad. If using a modern sil-pad (silicone), thermal grease is generally not required. : A very common substitute often found in