Ralf's Piezo-Amp: Difference between revisions
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[[File:Lerman SolderPiezoDisc.jpg|640px|thumb|none|From Richard Lerman, https://sonicjourneys.com/]] | [[File:Lerman SolderPiezoDisc.jpg|640px|thumb|none|From Richard Lerman, https://sonicjourneys.com/]] | ||
== Was würde Uwe tun? Optimized values und minor changes == | |||
* 1M voltage divider and smaller cap | |||
* diodes both to GND, limit input voltages | |||
[[File:PiezoAmp_V2_2_parts.jpg|800px]] | |||
Download handout: [[File:PiezoAmp 1channel V2 2.pdf]] | |||
=== updated schematics === | |||
[[File:PiezoAmp V2 2 schamtics.jpg|400px]] [[File:PiezoAmp V2 2 THT parts.jpg|400px]] | |||
=== Mask === | |||
[[File:MASK PiezoAmp V2 2.jpg|400px]] | |||
== Stereo Wurmophon - Dual Channel Piezo-Amp == | |||
[[File:Listening WormCompost.jpg|x220px|thumb|left|Testing the Wurmophon in a compost bin]] [[File:Dusjagr kemiosaari.jpg|x240px|thumb|none|Testing the Wurmophon in the archipelago beyond Kemiösaari, FI]] | |||
Working on a new design for a DIY workshop to make a dual channel Piezo-Amp optimized for minimum parts and easy to solder during a short workshop. Also changing to low power op-amp such as the MCP6002, so we can power it from a recharchable 3.7V LiPo or 5V powerbank. | |||
= Older Versions = | |||
== Ralf's Single Channel == | == Ralf's Single Channel == | ||
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[[File:MASK PiezoAmp V2 1.png|180px]] | [[File:MASK PiezoAmp V2 1.png|180px]] | ||
== SMD 3-Channel Version with Hammond case == | == SMD 3-Channel Version with Hammond case == | ||
Revision as of 12:01, 16 September 2024
Preparing the Piezo-disc with cable and plug
Was würde Uwe tun? Optimized values und minor changes
- 1M voltage divider and smaller cap
- diodes both to GND, limit input voltages
Download handout: File:PiezoAmp 1channel V2 2.pdf
updated schematics
Mask
Stereo Wurmophon - Dual Channel Piezo-Amp
Working on a new design for a DIY workshop to make a dual channel Piezo-Amp optimized for minimum parts and easy to solder during a short workshop. Also changing to low power op-amp such as the MCP6002, so we can power it from a recharchable 3.7V LiPo or 5V powerbank.
Older Versions
Ralf's Single Channel
Our good friend Ralf (http://www.ralfschreiber.com/) has shown us his nice new workshop module for making a single channel piezo pre-amp during HOME MADE 2020.
Some discussion on how to use a linear pot that reacts logarithmically by adding / chaning one of the resistors?
Boards
Masks
Schematic
Extra Puffer for Batterie and DC-Power supplier
> bei batteriebetrieb noch 100uF-470uF elko als puffer,
> bei netzteilbetrieb mindesten ein rc glied R10/220uf dazu!
Other Op-Amps for lower supply Voltages
MCP6002, MCP602, TLC272, LMV358, TLV9002
reworked by dusjagr Single Channel
- Minor changes
- optimized for SMD components
- mini-Jack and Pot on PCB
Optional changes to some values
Masks
SMD 3-Channel Version with Hammond case
coming soon...
Working on github: https://github.com/sgmk/3Channel-PiezoAmp
More about Piezo Amps
https://sound-au.com/project202.htm