neazoi
Advanced Member level 6
Hi I attach two images. One is a single more audio spectrum inverter and the other one is a dual mode (two stages).
As far as I am awave the dual stage should suppress the carrier and the unanted sideband.
However the single mode is attractive due to it's simplicity.
1. I need to ask, what is the purpose of the transformer in the single mode circuit? Why one couldn't just use a coupling capacitor and leave the other output unconnected?
The ne602 is a balanced modulator and the carrier is suppressed, so why to include an output transformer is a mystery.
2. I think that an opamp lpf should also provide the necessary unwanted sideband suppression.
As far as I am awave the dual stage should suppress the carrier and the unanted sideband.
However the single mode is attractive due to it's simplicity.
1. I need to ask, what is the purpose of the transformer in the single mode circuit? Why one couldn't just use a coupling capacitor and leave the other output unconnected?
The ne602 is a balanced modulator and the carrier is suppressed, so why to include an output transformer is a mystery.
2. I think that an opamp lpf should also provide the necessary unwanted sideband suppression.