Ultra low THD Preamp

327

03:40:53

Designed for my Ultimate Hi-Fi Class B Amplifier circuit. Some of the specs are: 

- Overall Consumption - 350mW
- Sensitivity - 330mV
- Input Impedance - 200K
- Output Impedance - 22kohm
- Current Gain - variable
- Voltage Gain - variable 
- Frequency Response - 2Hz - 50Khz
-  THD+N - 0.002% at given values. The lower the overall gain the lower the distortion. Alao use transistors like BC550 and their PNP equivalent. 

Tips&Advices:
- It's imperative that the power supply is completely ,,humless''. Exceptional filtering is of utmost importance. You can use LM7812 and LM7912.

published 9 years ago

eeMaster

9 years ago

Very very nice circuit. Good job man. Anything with valves?

thebugger

9 years ago

Sadly,no. EC doesn't have tubes as a component.

thebugger

9 years ago

Anyway why would you want a tuve preamplifier. They tend to introduce more noise than transistors and have higher harmonic noise. They lack feedback support, or it's hard to implement.

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