Mic Mic Scharf
GERMANY • + Follow
Download BOM(Bill of materials)
May 02,2022
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OPIC Microphone (Additional PCB)

Based on Roger Shores OPIC.VM Voltage Multiplier Circuit - a PCB fitting in some microphone bodies.
3062
1
9
Published: May 02,2022
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Topic
DIY Electronics
Audio
Music
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  • At which 2 points can I measure to see how much tension the capsule is getting

    Aug 28,20240 Comments
    Reply

  • 11/11/2022 - The attached BOM on this page is for the OPIC.41 project. Does anyone have access to the correct BOM?

    Nov 12,20226 Comments
    Mic Mic Scharf 2022-11-12 04:49:12Reply

    Thank you for notifying, try it again, I changed it

    Brian Kramer 2022-11-12 05:09:27Reply

    Hi MicScharf, thanks for the quick correction. I had the schematic but wanted to match the designations from the PCB. Thank you for your projects!

    Brian Kramer 2023-03-02 03:05:16Reply

    Hi MicSharf, couple questions. In the BOM for R12 and R13 you show 27k vs Roger's 22k on his schematic, and R14 you show 10k instead of 1M. Were these intentional changes?

    Engineer 2024-05-23 00:50:18Reply
    Reply@ Brian Kramer：

    I'm only getting 10V out of the board with 10k at R14, can the R14 affect the output voltage. Any ideas?

    Engineer 2024-05-23 00:51:24Reply
    Reply@ Engineer：

    As this board is a complement for the other one of Mic, migh be suited for this purpose but not for every other one.

    Engineer 2024-05-23 22:07:07Reply
    Reply@ Brian Kramer：

    R14 10k and 100nf before and after seems to be for filtering the DC signal. With 1M attenuation will occur at a lower frequency.

    Reply

  • R15 is responsible for the DC out: 60V - 3,3k, 65V - 2,2k, 70V - 1K, 75V - 470R, 80V - 10R. Alternatively, a potentiometer can be used as well

    Sep 24,20230 Comments
    Reply
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