Can this work ?

[larryB]

Will those work as shown by the waveforms of not , I am trying to reac the closest to 13.8 volts on the primary of transformer , I was thinking .5 ohm resistor or 1 ohm resistor on that side .

thx you for all comments

[larryB]

I think I have understood the mosfet wrong .

I believe this is more like it .

[mickeymoose]

Larry: What are you trying to do? You have 1.4V on the input and 1.2V at the Xformer primary. It seems to me that all you need is a buffer for current gain. E

[firechief]

In the last drawing, the output transformer has 0vDC and 0vAC on the primary. Also it looks like the two first gain stages are supposed to handle one phase of the signal each, but the feedback resistor values are different, Ill bet that is not what you wanted. Uh keep trying.

[glennb]

Originally Posted by firechief

Also it looks like the two first gain stages are supposed to handle one phase of the signal each, but the feedback resistor values are different, Ill bet that is not what you wanted.

The feedback resistors need to be different. The gain of an inverting amp is Rf/Ri, the gain of a non-inverting amp is Rf/Ri + 1.

[firechief]

Ah Glenb - I learned something Larryb - what is your thinking here? What is the over all design goal?

[larryB]

This is for an oscillator , not for audio in particular .

Im confused , what is wrong with this design .

The first 2 gains stages with the lm833 should be the same amplitude , but inverted , sorry if it is not .

Can anybody tell me whats wrong with the design , what could be made better , thx . I am trying to replace the transformer from the zeus design , this seems like it replaces a transfo witgh the battery in the middle to me when i just think at the waveform .

[larryB]

Firechief I see yopu are confused by the image .

The 1,4 V is just my bias , I wish this to go up to about 15 volts , to get the maximum output out of the battery and to barely bias the mosfets so they stay in continuous conduction .The vgs of a mosfets like this is about 1.5 volts or lower .

[Nico Ras]

LarryB, what exactly is your onbjective?

[larryB]

My goal is to have an pure sine oscillator for the 300-25000 hz range , pure sine voltage and current with no commutation glitches 100% linear , good with reactive loads .

To step up and isolate voltage @ about 50 volts with a load of about 35 ohms or higher , of capacitive , inductive or resistive phase angle .

Firechief I believe you are extremely confused , plz explain what you are trying to communicate .