I'm making a low power MOSFET amplifier for 475kHz with an IRF510. It
works fairly well and looks nice on the scope, but now I'm trying to
transformer couple its output to a second stage.
I made a center tapped, bifiliar wound, toroid transformer out of 26
turns of 22 ga. magnet wire on a 1" diameter core. This is so that I can
split the phases to drive the second stage as a push-pull.
When I look at the output of the right side of the output of the
transformer it looks like a perfect sine wave.When I look at the left
side's output the negative dip looks distorted.
Will someone look at these photos of my oscilloscope and suggest what
might be happening here?
Why is it only on one side of my transformer, only on the negative dip?
Scope:
https://dl.dropboxusercontent.com/u/24304293/transformer_distort.jpg
The transformer:
https://dl.dropboxusercontent.com/u/24304293/kb3x_475_amp.jpg
Both sides of the output are shunted to ground with 100 ohm resistors.
The center tap is grounded. The left side of the input is grounded and
the right is the signal input.
Drax
KB3X
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|
