Simple Symetrical Amplifier

[naf]

dear Shaan, if you want to just print and iron, i think this is the correct one.
left is your new corrected 10k resistor, right is my first board

[shaan]

Thanks naf for the proper layout. I deleted the above post, will upload the right one.

[shaan]

The good one. Promise. Print and Iron.

I am apparently a rookie after all.

Thanks Naf.

[naf]

Originally Posted by shaan

The good one. Promise. Print and Iron.

I am apparently a rookie after all.

Thanks Naf.

after all you're fast Shaan
now i just donwload it, print and iron...no need manual edit anymore Thank you.

[JOHN BALI]

Originally Posted by Sheldon

Here's my all BJT version: Simple Symetrical Amplifier

A couple of points: I'm using Thermaltrak outputs. You can substitute standard power BJT's and an ordinary VAS multiplier. You'd still want the NTC to compensate the front end (thermally coupled to the input pair).

Distortion will rise above a certain power level for this simple version, as the VAS will be loaded at higher output levels. I don't need much power, and I haven't seen any issue. For more power you can use the output design from the all BJT SST thread.

Sheldon

Thanks Sheldon,
I will see that, but maybe I don't have enough skill if there something to modify
and I already order the lateral pair...(thanks to Naf for the info)
Now I'm waiting for my own thinking which one will be build
It is really hot thread he...3x

Regards

[naf]

Originally Posted by JOHN BALI

Thanks Sheldon,
I will see that, but maybe I don't have enough skill if there something to modify
and I already order the lateral pair...(thanks to Naf for the info)
Now I'm waiting for my own thinking which one will be build
It is really hot thread he...3x

Regards

glad to hear dear John, no it's up to you to choose your poison
Good luck.

[shaan]

Hi John.

For LATFETs you can choose either Nico's V1.4 PCB or the PeeCeeBee.

[masood]

dear sir,
how can i set bias voltage at gate of mosfet.
thanks

[Riff]

Originally Posted by Lazy Cat

Hi guys

Finally, I am proud to announce that the SSA Low Impedance HP design project is prepared. It was a DIY community mutual project since there are ideas, knowledge, effort and of course time & energy of many involved, to offer free SSA amplifier project to all interested.

Happy DIY, enjoy, regards Andrej

P.S. Special thanks to Alex, you're the Man.

hi LC..." SSA Low Impedance HP " is a great progress from SSA i think.
any plane " SSA Low Impedance HP " for PA (kw)?

[shaan]

Originally Posted by masood

dear sir,
how can i set bias voltage at gate of mosfet.
thanks

Like the attachment for autobias.

Or a 1K Trimpot replacing the diodes for manual bias setting.

Only for Laterals.