Schematics By The Book – Mic Preamp

Schematics By The Book – Mic Preamp


Schematics By The Book is a series highlighting educational and practice circuits from our favorite electronics books. Each post contains a link to the book, a copy of the schematic, and a full current BOM of through-hole parts you can use for prototyping.

Publication: Electronic Formulas, Symbols & Circuits
Author: Forrest Mims
Circuit: Microphone Preamplifier
Page: 121
KiCad Schematic File: Microphone Preamplifier KiCad Schematic
BOM CSV: microphone_preamplifier.csv

Forrest Mims Microphone Preamplifier

(Click schematic to enlarge)

Schematic Ref Description MFN MFP Part Link
MIC1 Electret Microphone CUI Inc CMA-4544PF-W Part Link
R1 15K Biasing Resistor Yageo Corporation MFR-25FBF52-15K Part Link
R2 1K Biasing Resistor Yageo Corporation MFR-25FBF52-1K Part Link
R3, R5 10K Current Limiting Resistor Yageo Corporation MFR-25FBF52-10K Part Link
R4 1K Low Pass RC Filter Yageo Corporation MFR-25FBF52-1K Part Link
C1 0.1uF DC Blocking Capacitor Vishay Intertechnologies K104K15X7RF53K2 Part Link
C2 0.1uF DC Blocking Capacitor Vishay Intertechnologies K104K15X7RF53K2 Part Link
C3 1uF Low Pass RC Filter Vishay Sprague 515D105M050JA6AE3 Part Link

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