Ultra low THD Preamp

384

04:20:15

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 10 years ago

eeMaster

10 years ago

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

thebugger

10 years ago

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

thebugger

10 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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