sunken 2SA1216/2SC2922

[space2000]

hi, anyone have build amp using sunken 2SA1216/2SC2922. i am searching for circuit design using this transistor. pls hlp me.

thank you.

 

[east electronics]

some versions

of korean INTER M amplifiers were equiped with that outs..... nice devices

never liked interm amplifiers though

whats your expected out ???

 

[space2000]

amp

hi, my uncle had a kenwood amp and i saw it was used 12pcs 2sc2922 transistor. i want to use this transistor to make one for my uncle. i never tried this. i know it is very old.

is there any web i can find circuit design for this?

thank you.

 

[east electronics]

should i presume ????

that you canibalazied the kenwood amplifier and now you are full of transistors ????

oooo what a pity ....i keep these amps alive ....

any way just tell us a few more like what trafo you have and what is your power requirements

 

[Piersma]

Sanken 2SA1216/2SC2922

The Elektor Ulti Amp uses the Sanken 2SA1216/2SC2922

http://www.diyaudio.com/forums/showthread.php?threadid=11523

best regards,

Piersma

 

[space2000]

tried new things on symasim5_3 amp

hi, today i tried on sysasim 5_3 amp using power transistor 2SA1216 and 2SC2922 it works but only gets too hot. do you think i can use this transistor on symasim amp? what else need to chnage?

thank you.

 

[ilimzn]

Re: tried new things on symasim5_3 amp

hi, today i tried on sysasim 5_3 amp using power transistor 2SA1216 and 2SC2922 it works but only gets too hot. do you think i can use this transistor on symasim amp? what else need to chnage?
thank you.

Did you check and adjust idle currnt after changing the transistors? Did you sheck if there is any oscillation in the output?

 

[space2000]

tried new things on symasim5_3 amp

hi ilimzn, thank you. here is the sysasim design and i made change on only power transistor with 2sc2922 and 2sa1216. i dont know is there need to change resistor too. need help.

 

[pallab]

sir,i have this circuit..is it all correct ??I have not tasted it..is there any fault???

 

[jacco vermeulen]

Why drive a 100W bipolar output stage, with a 100W MOSFET output stage ?

 

[Calvin]

Hi,

these Transistor-pair was quite popular in a number of so called HighEnd amps in the late 80s early 90s.
Burmester used them (think it was the 911 or earlier model), Cambridge used them in their A3i, Accuphase used similar Sanken Ring-Emitter-types (LAPT) already in their M100 up till today and Parasound used also similar LAPTs (SA1295-/SC3264, HCA3500, SA1294/SC3263, HCA2200).
Those are still some of the finest and powerful output transistors and the SA1216/SC2922 are astonishingly cheap -though the very cheap ones could well be by ISC (Inchange Semicon).
Schematics using the SA1216/SC2922:
The schematic in #8 is similar to the Elektor 200W amp.
My Pro-2 EA1000 amp uses them.

jauu
Calvin

 

[jacco vermeulen]

earlier model

(828 monaurals, 120W Toshiba RET drivers)

 

[pallab]

u are right...but mosfet out put is not 100w here...its slightly less here...