Bordodynov
- Joined May 20, 2015
- 3,174
These transistors to increase the gain. They have a positive feedback. This results in the two elements having a negative dynamic resistance. Two resistors in parallel transistors reduce the gain to an appropriate level. This amplifier is promising for the soft limit the audio signal (the same tube circuits). To reduce the output impedance amplifiers can be used for common collector scheme.@Bordodynov what is the function of Q3 and Q4?