AB100 Class AB Power Amplifier

[Nelson Pass]

PCBway quotes about $2.60 in 50 lot with about $50 shipping

 

[woofertester]

JLCPCB is $1.14/board at 50 pcs plus about $50 for express shipping.

The more I stare at the your AB100 layout, the more I like it.

I already own qty 2 Adcom GFA555 amps, so stuffing an AB100 board would be strictly for fun.

 

[rookakoma]

PCBway quotes about $2.60 in 50 lot with about $50 shipping

What copper thickness did You choose, and what would You suggest?
On the screen-shoot is 1 oz, and 2 oz would be 63,60 in 50 pcs lot.
JLPCB and PCBway prices are tolerable, both are professional.
Thanks for sharing this wonderful design.

 

[rookakoma]

Oops, thats an other AB100 pcb.
Correct prices:
1 oz-56.80 and 2 oz-89.50 USD.

 

[carsten.witt]

Actual state ...

1. manniraj
2. Cambe
3.
4.

 

[carsten.witt]

Actual state ...

1. manniraj
2. Cambe
3. HerrErnie
4.

 

[yuujin]

May I buy one pair of boards if it is still available?

 

[carsten.witt]

1. manniraj
2. Cambe
3. HerrErnie
4. yuujin

 

[va411]

Hello,
If I'm still on time I'd like to buy a set.
Regards,
Carlos.

 

[onkal]

So how much is it cost now

 

[manniraj]

I am in the group if the price of the boards is similar or cheaper than what carsten.witt could offer with pricing of the boards.

thanks

 

[carsten.witt]

Sorry, but this only a "say thank you to Papa" mini GB from my side and no more boards.
First comes, first serve (if the shipping costs ok for the first four).

Still today no more boards left.


For all others, try a pcb producer as Nelson or rookakoma recommened. Sometimes is it cheaper (inkl. shipping to you) as you think. Then make your own GB for your region. ;-)

 

[manniraj]

Ok I understand thank you.

 

[manniraj]

Any advice where to get those bjt's (2sa/2sc) series transistors that Papa mentioned in the schematic. I think those are not being currently sold on Mouser or Digikey, any specific replacements in this circuit.

Thank you

 

[Skylar88]

Earlier in the thread there has been mention of KSC2690 and KSA1220 as possible equivalents.

 

[manniraj]

Earlier in the thread there has been mention of KSC2690 and KSA1220 as possible equivalents.

Thank you.

 

[manniraj]

Earlier in the thread there has been mention of KSC2690 and KSA1220 as possible equivalents.

These are available in stock on Mouser, so will order and use them on my boards.

Thanks

 

[woofertester]

These are available in stock on Mouser, so will order and use them on my boards.

Thanks

I just had a look at Mouser for KSA1220 and they appear to be out of stock.

If it were me, I would use TTC004B and TTA004B. I have run them through the curve tracer. They appear to have excellent quasi-saturation behavior.

 

[manniraj]

I just had a look at Mouser for KSA1220 and they appear to be out of stock.

If it were me, I would use TTC004B and TTA004B. I have run them through the curve tracer. They appear to have excellent quasi-saturation behavior.

Thanks I am contemplating to go with these BJTs instead of out of stock KSC/KSA ones.

 

[Nelson Pass]

excellent quasi-saturation behavior./QUOTE]

What would "excellent" mean in this case?