Hey,
I'm looking at the schematic of the Lorenz V41 preamp.
And the output transformer got me wondering.
It states 17H and 110 Ohm for the primary.
And the anode choke has 100H...
Can somebody please explain to me, why the output transformer inductance can be so low? It has an reactance of only 4k3 Ohms at 40Hz. The plate impedance of the EF12 isn't that low, isn't it?
Is the choke somehow taking over the "work"? :
Other output transformers with a similiar topology have way more inductance (V76, V241,...)
And no, the 17H is not a typo or anything. I have an original here and measured it...
I'm looking at the schematic of the Lorenz V41 preamp.
And the output transformer got me wondering.
It states 17H and 110 Ohm for the primary.
And the anode choke has 100H...
Can somebody please explain to me, why the output transformer inductance can be so low? It has an reactance of only 4k3 Ohms at 40Hz. The plate impedance of the EF12 isn't that low, isn't it?
Is the choke somehow taking over the "work"? :
Other output transformers with a similiar topology have way more inductance (V76, V241,...)
And no, the 17H is not a typo or anything. I have an original here and measured it...