Ralf's Piezo-Amp: Difference between revisions
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[[File:MASK PiezoAmp V2 1.png|180px]] | [[File:MASK PiezoAmp V2 1.png|180px]] | ||
== Was würde Uwe tun? Optimized values und minor changes == | |||
* 1M voltage divider and smaller cap | |||
* diodes both to GND, limit input voltages | |||
== Stereo Wurmophon - Dual Channel Piezo-Amp == | == Stereo Wurmophon - Dual Channel Piezo-Amp == | ||
Revision as of 11:40, 16 September 2024
Preparing the Piezo-disc with cable and plug
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
Was würde Uwe tun? Optimized values und minor changes
- 1M voltage divider and smaller cap
- diodes both to GND, limit input voltages
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.
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