neazoi
Advanced Member level 6
Hello I am building a QRP (CW) transmitter tor the HF bands 160m to 10m and I need an amplifier to drive my oscillator so I can get 1-2W max out.
I have found this circuit **broken link removed** (picture at the bottom) and I have built the oscillator but I need to eliminate the interstage transformer (capacitive coupling)
I have managed to eliminate the transformer on the oscillator but capacitive coupling does not work at the input of the amplifier.
I was wondering if you can suggest something for correct capacitive coupling (or another amplifier circuit)
Note. I have tried different base, collector, emmiter biases but the amp does not give output power at all! The transistor is new.
I have found this circuit **broken link removed** (picture at the bottom) and I have built the oscillator but I need to eliminate the interstage transformer (capacitive coupling)
I have managed to eliminate the transformer on the oscillator but capacitive coupling does not work at the input of the amplifier.
I was wondering if you can suggest something for correct capacitive coupling (or another amplifier circuit)
Note. I have tried different base, collector, emmiter biases but the amp does not give output power at all! The transistor is new.