neazoi
Advanced Member level 6
Hello I consider the attached image which is the first stages of a regenerative QRP receiver.
The amplifier comes from another project and output impedange is 50 ohm. The detector assumes an imput impedance of 50 ohm I think as well.
Since I would like to combine these circuits, I would like to migrate the output transformer of the rf amplifier with the input transformer of the detector and use just one transformer.
I am thinking of calculating the inductance of the primary (24turns) of T2 and then calculating the inductance of the secondary of T1.
Then combine them into a single transformer that thas as a primary, the inductance of the primary of T2 and as a secondary, the inductance of the secondary of T1.
In other words, make another transformer that matches the impedance detween the two stages directly, without first converting them to 50 ohm.
Is my approach correct?
(a suitable toroids calculator should be used for calculate the current inductances and make the new transformer)
The amplifier comes from another project and output impedange is 50 ohm. The detector assumes an imput impedance of 50 ohm I think as well.
Since I would like to combine these circuits, I would like to migrate the output transformer of the rf amplifier with the input transformer of the detector and use just one transformer.
I am thinking of calculating the inductance of the primary (24turns) of T2 and then calculating the inductance of the secondary of T1.
Then combine them into a single transformer that thas as a primary, the inductance of the primary of T2 and as a secondary, the inductance of the secondary of T1.
In other words, make another transformer that matches the impedance detween the two stages directly, without first converting them to 50 ohm.
Is my approach correct?
(a suitable toroids calculator should be used for calculate the current inductances and make the new transformer)