neazoi
Advanced Member level 6
- Joined
- Jan 5, 2008
- Messages
- 4,157
- Helped
- 13
- Reputation
- 26
- Reaction score
- 15
- Trophy points
- 1,318
- Location
- Greece
- Activity points
- 37,198
HEllo,
I have a good quality low distortion 100mW buffered HF oscillator and I would like to build a small qrp amplifier for it to output 1W or so.
To minimize harmonics without using an LPF I am trying to build this amp from a power transistor, lightly driven.
I have chosen the 2sc2166 and I have made a schematic for the amplifier. However the output waveform is more like a square wave.
Have you got any ideas of why this is happening and how to fix this?
I/O caps are 100nf, choke is 10T on FT37-43 TR is 2sc2166 and Rcb is a 500R pot.
No matter what values I change I always get a distorted output.
I have a good quality low distortion 100mW buffered HF oscillator and I would like to build a small qrp amplifier for it to output 1W or so.
To minimize harmonics without using an LPF I am trying to build this amp from a power transistor, lightly driven.
I have chosen the 2sc2166 and I have made a schematic for the amplifier. However the output waveform is more like a square wave.
Have you got any ideas of why this is happening and how to fix this?
I/O caps are 100nf, choke is 10T on FT37-43 TR is 2sc2166 and Rcb is a 500R pot.
No matter what values I change I always get a distorted output.