Conversion from TO3 to TO220

[tony Ma]

Dear all,

Sorry for newbee questions

I want to convert my b&k ST-140 from TO3 to TO220

as you know that this amp use 2sj50 which is eq with 2SJ162

Also 2SK135 which also eq with 2SK1058

Please let me know if I did right or wrong on the picture attached

1 or I is gate
2 or II is source
3 or III is Drain

 

[gmphadte]

It is wrong. I will not confirm what is right as I am not sure of the amp output type.

Gajanan Phadte

 

[tony Ma]

Here is the information on
2sj162

http://www.jaycar.com.au/images_uploaded/2SJ16012.PDF

2sk1058

http://www.datasheetcatalog.org/datasheet/HitachiSemiconductor/mXyzruwz.pdf

2sk135

2SK135 pdf, 2SK135 description, 2SK135 datasheets, 2SK135 view ::: ALLDATASHEET :::

2sj50
2SJ50 pdf, 2SJ50 description, 2SJ50 datasheets, 2SJ50 view ::: ALLDATASHEET :::

Also attached the whole schematic

tks

 

[djk]

Why?

The stock 8A parts are still available, or 16A parts if you need to drive 4Ω.

http://www.profusionplc.com/pro/gex/pcatdtl0?ipartno=ECF20N20

ECF20P20

 

[tony Ma]

@djk ,Yes thankyou but

I just want to learn

 

[mchambin]

An externally hosted image should be here but it was not working when we last tested it.

2 and II Gate
1 and III Source
3 and I Drain

 

[tony Ma]

@mchambin, tks so much for the correction
Some how your picture is not showing

 

[mchambin]

Sorry about the image, I tried all ways to paste, the pic from the original post...😡

Here is a typical amplifier using SK1058 and 2S162
http://sound.westhost.com/project101.htm