Selasa, 20 November 2012

Audio Preamp

Specification
Power 12 Volts nominal 1.6mA current drain
Gain 27dB
Bandwidth 9Hz to 127kHz -3dB
Input Impedance 99.3Kohm @ 1Khz
Output Impedance 127ohm @ 1kHz
Noise 760uV input referred noise from 1Hz to 10MHz
THD 0.11% @ 6V pk-pk 1KHz
SNR 107dB @ 1KHz

Notes
This preamplifier has two direct-coupled common emitter stages and uses series-voltage feedback. The circuit has high input impedance,low output impedance, voltage gain can be set independently and has low noise levels and good signal noise ratio.

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