Sound Blaster Mikrofon Preamplifikatörü
Input Type: Unbalanced Low Impedance
Input Sensitivity: Approx. -20dBV (100mV or 0.1Volt)
Input Impedance: 600 to 1500. (Ohms)
Input Connector: 3.5mm Miniplug (Stereo Jack)
Input Wiring: Audio on Tip, Ground on Sleeve, 5Volts DC Bias on Ring
R1 1 K
R2 220 K
R3 4.7 kohm
C1 15 uF 10V elektrolitik
C2 22 uF 10V elektrolitik
C3 47 uF 10V elektrolitik
Q1 BC547B
Kaynak : http://www.epanorama.net