Post your Solid State pics here

[lineup]

thanks jacco
We can download this Motorola Fully Symmetrical amplifier here:
http://home.eunet.cz/rysanek/pdf/
Motorola AN1308-D: mot-amp2.pdf

There is also one other motorola amplifier Note: mot-amp.pdf
And one IRF HEXFET Amplifier application: irf-fet-amp.pdf

The Philips short note/tutorial on OpAmps may interest some
AN165: Integrated operational amplifier theory. philips-on-opamps.pdf

Attachment:
Motorola Fully Symmetrical 100 Watt, using 3 pairs of 2SC3281-2SAS1302

 

[stoN_Cold]

Hi!

We can download this Motorola Fully Symmetrical amplifier here:




Schematic is OK, but PCB is Nightmare.

Regards zeoN_Rider

 

[alex mm]

PCB nightmare ?

Hi,
Zeonrider , PCB top side for this amplifier http://i35.tinypic.com/30kf1g0.jpg 😀

 

[jacco vermeulen]

Beautiful piece of work.

 

[stoN_Cold]

Nightmare of PCB !

Beautiful piece of work.

Beautiful,Beautiful, but only one side?!

Half of Nightmare stil egsist!

Regards zeoN_Rider

 

[rohms]

Re: Motorola 100 w audio amp

..... my new amp from Motorola application note http://i36.tinypic.com/2u76jro.jpg 😀 alex mm

hi alex,
how do you fabricate in silkscreen and what is the size of the board? thanks.

 

[jacco vermeulen]

only one side

Z-R,
you think he likes to do single-sided layouts ?

 

[stoN_Cold]

Hi JV!

Now I can see blue lines are jumpers



But size???

Regards zeoN_Rider

 

[jacco vermeulen]

size

Looks like something in the order of 8.5" x 3"

 

[alex mm]

pcb size

Hi,
Main board PCB are 208 mm X 73 mm .Silk screen it's printed with toner transfer technique . 😀

 

[rohms]

thank you so much.

 

[stoN_Cold]

Re PCB!

OK size of Main board, what about size of 2 little PCB.

Do you have all dokumentation of this Amp.

I, ment PCB without silk skreen layouts for Main + little.

One word complete doc! for toner transfer technique!

Thanks!

Regards zeoN_Rider

 

[alex mm]

With prot board ....little one

... another pic http://i37.tinypic.com/ta0xtg.png alex mm

 

[stoN_Cold]

Hi!

Nice pic.

Do you received my Mail?

Regards zeoN_Rider

 

[dhengkoel]

The white wires look like inputs. Why are they twisted...

Gajanan phadte

dear Gajanan;

sorry for late response ___
the white wires are input/signal ground ___

regards:
gustOmO

 

[gmphadte]

dhengkoel,

It looks like they are the signal wires of both the channels. If yes, then u should not twist them as crosstalk between channels will increase due to capacitive coupling.

U have to twist signal/ground individually, and not signal L/signal R.

Gajanan Phadte

 

[crt]

this is my JLH (15W, update version) + Reg. PSU

one channel done.
other channel still in progress. 🙁 . sorry i'm slow to build amplifier.

 

[hollow_man]

My Electrocompaniet clone. Yet to fit soft start pcb, speaker connectors and power switch.

 

[fotios]

My Electrocompaniet clone. Yet to fit soft start pcb, speaker connectors and power switch.

Nice effort hollow_man.
Very nice case and front panel which i think it is about 10mm thick. It seems like a "Modu" case from Italy. Or the case is it made in Greece?

Regs
Fotios

 

[hollow_man]

yeap, a modu case indeed! Cheers Fotios.