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| | | new documentation == https://w2.electrodragon.com/gollum/search?q=MSP1014-dat.md |
| == Schematic == | |
| <gallery>
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| File:LM386_board_schematic.png | Schematic 1
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| File:Lm386_mic_amp1.png | Schematic 2
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| </gallery>
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| {| class="wikitable sortable"
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| |-
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| ! Gain !! C1 !! R1 !! R4
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| |-
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| | 20x, 14x, 10x || - || - || 2k, 5k, 10k
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| |-
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| | 20x || - || -
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| |-
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| | 50x || 10UF || 1.2K
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| |-
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| | 200x || 10UF || -
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| |}
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| * Amplification is controlled by R2 in schematic 2
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| # C1 1~10uF Bypass capacitor
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| # C2 10uF Gain 200x. Optional, without 10uf is 20x gain.
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| # C3 220uF Output coupling capacitor
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| # C4 47nF Boucherot cell
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| # C5 100nF Power supply decoupling
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| # C6 100uF Power supply decoupling
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| # C7 10uF Microphone coupling capacitor
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| # MIC Electret microphone
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| # R1 10R Boucherot cell
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| # R2 1 ~ 10K Microphone load resistor
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| # VSS 4 ~ 12V Supply voltage
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| | |
| [[category: Audio Amp]]
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Latest revision as of 14:11, 3 April 2025