Rresistor before output transformer.

[vmanj]

Hello everyone.
If you include a resistor in front of the output transformer (as in the figure), then can this work as a high-pass filter?

 

[metalockpick]

You don't even need the resistor, it's a HP filter as is.
The tuning is adjusted by C value and the actual load impedance value.

If you know what your load impedance is at the cutoff frequency and a few octaves below (and it is stable), you don't need the resistor. If the impedance at those frequencies varies wildly, you can add the resistor to ground (across the primary or secondary of the transformer) to make the load stable (Adjust C for proper cutoff frequency with the R in place).

 

[gyraf]

Also, that resistor can help sort out the height of the bump (Q) created at the resonant frequency of output capacitors vs. transformer primary inductance

/Jakob E.

 

[vmanj]

Also, that resistor can help sort out the height of the bump (Q) created at the resonant frequency of output capacitors vs. transformer primary inductance

A resistor can help determine the jump height (Q) if it is connected to ground (between the primary of the transformer) or (after the capacitor, before the transformer) as in the image above?

 

[ccaudle]

A resistor can help determine the jump height (Q) if it is connected to ground (between the primary of the transformer) or (after the capacitor, before the transformer)

Either, but the optimal value may be different. In the series connection an increasing resistance decreases Q and a decreasing resistance increases Q. A parallel connected resistor will increase Q as the resistor increases, and decrease Q as the resistance decreases.

 

[vmanj]

I see, thank you all for your participation.

 

[CJ]

Simulation software is great for this type of circuit,