Simple Symmetrical Amplifier by Andrej Lackner

[kaushik]

Can you post Dula voltage PSU details........

 

[shaan]

Hi Kaushik. A simple dual power supply is good enough.

My PS details:

Transformer- 20-0-20/120VA
Bridge- KBPC3510
Filtering- 1 x 15000uF/50V in each rail, two capacitors for + and - rail..

Rectified DC voltage= +-28V

shaan

 

[GeorgeO]

Looks good. DIY is a very good option for amps,though not for all, in my view.

 

[trittya]

Looks very 'mouth-wateringly' interesting and tempting, even to a noob like me.

Great Going, Shaan. Keep it up.

Best wishes, always . . .

 

[kaushik]

shaan,
that is great ,for newbies this is the diagram

use the components as saan mentioned

 

[shaan]

I would suggest increasing the capacitance to 15000uF or more in each rail for good bass response, and a 35A bridge rectifier as the peak charging current through the capacitors will be very high and might cause overload to a lower amp rated bridge.

Higher transformer secondary can be used with the changes noted in the following post:

Changes in SSA for use with Higher Voltage PSU

 

[shaan]

SSA PCB V2 for correct printing of texts.

 

[sbg]

Thanks Shaan!
This will be my first DIY amp.
Seems like Cut and Paste!.

 

[shaan]

Hi sbg.

Yes it is indeed easy as cut-paste!

All the best on your first diy and first SSA.

 

[sbg]

Form the BOM list,
Capacitors:
5pF 100V Silver Mica 4
22pF 100V Silver Mica 2

Transistors: 2SJ162 2

These seems not available in SP Road, gave up after checking 3-4 shops.

including 10uF 50V NonPolar 2.

any ideas where this all or preferably the whole BOM can be sourced from one location.
dont feel like taking 95% of the parts and wait endlessly for few part to begin with.

 

[shaan]

Form the BOM list,
Capacitors:
5pF 100V Silver Mica 4
22pF 100V Silver Mica 2

Transistors: 2SJ162 2

These seems not available in SP Road, gave up after checking 3-4 shops.

including 10uF 50V NonPolar 2.

any ideas where this all or preferably the whole BOM can be sourced from one location.
dont feel like taking 95% of the parts and wait endlessly for few part to begin with.

Hi sbg. Sorry for the late reply.

The pF value capacitors don't need to be silver mica. You can use normal ceramic caps.

The P-Channel MOSFET 2SJ162 is necessary to use with the 2SK1058, so try and see if you can source them. You can use 2SK1530/2SJ201 pairs if the 2SJ162 is not available at all where you live.

All the best.