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Audio

Audio noise generator

This is another basic circuit using a transistor, you can use this as a noise source for testing an amplifier for example. Schematics Parts List QTY PART-REFS VALUE --- --------- ----- Resistors --------- 1 R1 1k 1 R2 100k Capacitors ---------- 1 C1 0.1uf Transistors ----------- 1 Q1 2N2222

Audio Mixer

This is a simple audio mixer using an fet. Schematic Bill of materials QTY PART-REFS VALUE --- --------- ----- Resistors --------- 1 R1 6.8k 2 R2,R3 100k Capacitors ---------- 3 C1-C3 0.1uF Transistors ----------- 1 Q1 2N3819 Miscellaneous ------------- 2 RV1,RV2 10k

Audio Pre-Amplifier circuit

A simple audio pre amplifier using some basic components Schematic Parts List QTY PART-REFS VALUE --- --------- ----- Resistors --------- 1 R1 100k 2 R2,R3 10k Capacitors ---------- 2 C1,C2 0.1uf Transistors ----------- 1 Q1 2N3904 Miscellaneous ------------- 1 MIC1 MICROPHONE