Monday, May 30, 2016

Microphone Pre-amp

Low Noise Microphone Preamplifier Circuit


R1, R2, R3, R4 & R8: Low excess noise metal Film
C1, C2 & C3: Input and output coupling
C4 : Noise filter, C5: bypass
NOTE: Input Cable to microphone must be shielded

Hot-Swap Circuits with Inrush Current Limiter

  To provide continuous current sensing and limiting, this hot-swap circuit uses a PNP transistor and a current sense resistor of 0.333R. Wh...