f4 parts substitution

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hi
i would like to use my 2sj109 in my diy f4 but i notice it has seven legs as oposed to six when using the normal combination of 108/ 389
what is this extra leg ?

i have not got the output devices yet are there any options here that would drop in and be an improvement on the originals ,toshiba or semisouth perhaps ?

thanks in advance for any help or advice

regards sheafer
 
hi zen mod
here you go regards sheafer
 

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Official Court Jester
Joined 2003
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hi zen mod
i think so ,i should replace the 4x 2sj74 with 2x 2sj109 yes
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exactly


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also does mucho mean remove ?
....

mucho means "plenty"

but - do not look previous schematic where mucho is written

just look at schematic in post #12 where I linked you

and - look at that Algar_emi's pdf - many things will be clearer to you
 
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