Ralf's Piezo-Amp: Difference between revisions

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== Preparing the Piezo-disc with cable and plug ==
== Preparing the Piezo-disc with cable and plug ==


[[File:Lerman SolderPiezoDisc.jpg|640px|From Richard Lerman, https://sonicjourneys.com/]]
[[File:Lerman SolderPiezoDisc.jpg|640px|thumb|none|From Richard Lerman, https://sonicjourneys.com/]]


== Ralf's Single Channel ==
== Ralf's Single Channel ==

Revision as of 14:53, 19 August 2024

Preparing the Piezo-disc with cable and plug

From Richard Lerman, https://sonicjourneys.com/

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

Experiments during ROSA

Videos by Richard Lerman Richard Lerman

What is a charge amplifier and why do I need one?