VSSA Lateral MosFet Amplifier

[Lazy Cat]

No output serial inductance, only 8 ohm load resistor and 0,22 uF parallel to the load when performing 50 kHz squares test.

Thanks for the links Esperado.

[Esperado]

Originally Posted by Lazy Cat

No output serial inductance, only 8 ohm load resistor and 0,22 uF parallel to the load when performing 50 kHz squares test.

Impressive ! Congratulations, as habit.

[Idefixes]

Hi LC,

First try out for 1.4 version. The board size is 72x72mm

[Lazy Cat]

Preliminary VSSA PCB 1.4, 50 x 60 mm

[tinitus]

[Esperado]

Originally Posted by Lazy Cat

Preliminary VSSA PCB 1.4, 50 x 60 mm

Missing tracks on the FET CSSs ?

[Lazy Cat]

Originally Posted by Esperado

Missing tracks on the FET CSSs ?

It is not finished yet. I went to sleep before ending. Today it will be done.

[Lazy Cat]

VSSA 1.4 PCB final version. Miller capacitors, offset and bias setting resistors on the top, to be easy accessible and tuned to the exact value. No trimmers for no-compromise long term reliability. Output RC filter splitted in to two ways to have better power dissipation since SMDs are used.

Have fun.

[Idefixes]

Originally Posted by Lazy Cat

VSSA 1.4 PCB final version. Miller capacitors, offset and bias setting resistors on the top, to be easy accessible and tuned to the exact value. No trimmers for no-compromise long term reliability. Output RC filter splitted in to two ways to have better power dissipation since SMDs are used.

Have fun.

What value have you use than?

Marc

[Lazy Cat]

Output filter made by 22 ohm/1 W, 47 nF/100 V SMDs times two. Other requested values are easily calculated by help from Ohm's Law.