double-gain
A small PCB that uses two TL082BCP op amps to amplify a signal from a contact microphone. (by Supermagnum)
piezo-balanced
A small board that uses a LSK389B, for preamplification and impedance matching of two piezo electric crystals. It has balanced input and output. (by Supermagnum)
| double-gain | piezo-balanced | |
|---|---|---|
| 8 | 15 | |
| 6 | 9 | |
| - | - | |
| 0.0 | 1.8 | |
| over 2 years ago | almost 3 years ago | |
| Creative Commons Attribution 4.0 | Creative Commons Attribution 4.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
double-gain
Posts with mentions or reviews of double-gain.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-08-01.
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A microphone that is very sensitive to vibrations.
I wonder if a piezoelectric microphone could work for asmr. It would work for heart beats because they are very sensitive to vibrations. There actually is a patent on such a device. https://patents.google.com/patent/US8320576B1/en . I have actually built a piezoelectric microphone, it involves some soldering. My design is here: https://github.com/Supermagnum/double-gain Sadly aisler doesn't offer kitted parts anymore,just the circuit board. One has too look at the schematic diagram to figure out the number of components and the values of them because there is no list of components.
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IC that can be both a separate buffer and amplifier
This circuit runs on phantom power, is balanced and you just have to change r11 and r13 to something like 500 ohm to get 11DB gain. https://github.com/Supermagnum/double-gain
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DIY hydrophone recordings, made today.
I used: https://github.com/Supermagnum/double-gain and a Tascam DR-40X.
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Resistor values for a Cascode FET amplifier, with 3.3 megaohm input impedance.
I haven't done any analysis the cascode setup yet,- and I am unsure if I will. It's just easier to use two op amps: https://github.com/Supermagnum/double-gain/blob/main/double-gain.pdf
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A couple of DIY preamplifiers for piezoelectric elements.
This one uses two NE5534 op amps, gain is set with two resistors ( R2 and R13 ). 25 to 39 dB range. Easy to solder. https://github.com/Supermagnum/double-gain Works in simulator for electronics.
- My attempt at a preamplifier for a piezoelectric element. It has unbalanced input, balanced output, runs on 48 phantom power and uses two Opamps.
- My attempt at a preamplifier for a piezoelectric element, it has a unbalanced input, balanced output, for +48 volt phantom power.
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Help increasing gain of common source N channel Jfet amplifier
Preliminary design: https://github.com/Supermagnum/double-gain/blob/main/double-gain.pdf
piezo-balanced
Posts with mentions or reviews of piezo-balanced.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-06-28.
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Resistor values for a Cascode FET amplifier, with 3.3 megaohm input impedance.
At least this works just fine, I have actually built it. https://github.com/Supermagnum/piezo-balanced/blob/main/piezo-jfet.pdf It seems that the gain is somewhat dependent on the impedance of the recorder its connected to. I am getting 20 dB with 10K ohm impedance of the recorder ( simulated ).
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A couple of DIY preamplifiers for piezoelectric elements.
Ultra low self noise version,the gain is dependent on the impedance of the recorder. 20 dB gain with 10K impedance: https://github.com/Supermagnum/piezo-balanced Tested and works!
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Does this make sense? It's a preamplifier for piezoelectric crystals, using a opamp for balanced input and output. 48 volt phantom powered.
It's not for a microphone, but hydrophone. It's mentioned in: https://github.com/Supermagnum/piezo-balanced/blob/main/Barlow-et-al-2008-HydrophoneConstruction_TM-417.pdf
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Help increasing gain of common source N channel Jfet amplifier
It's a pdf file: https://github.com/Supermagnum/piezo-balanced/blob/main/piezo-jfet.pdf
- A DIY preamplifier/impedance buffer for two piezoelectric elements wired as a balanced input. It has balanced output and uses +48 volts phantom power.
- A DIY low noise preamplifier for piezoelectric crystals, powered by +48 volts phantom power.
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DIY preamplifier for piezoelectric elements, powered by +48 volts phantom power.
You can of course use my circuit for whatever you want, it is under this license: https://github.com/Supermagnum/piezo-balanced/blob/main/LICENSE.txt
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A attempt at a low noise DIY preamplifier and impedance buffer for piezoelectric elements.
It runs on 48 phantom power, has balanced input and output. Around 30 dB gain, and uses a LSK389B that is a replacement for the discontinued Toshiba 2SK389. Gerber files, component values and so on is here: https://github.com/Supermagnum/piezo-balanced Any opinions on it?
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A preamplifier and impedance buffer for piezoelectric elements that has balanced inputs and outputs. Runs on 48 phantom power.
It's a preamplifier and impedance buffer for piezoelectric elements and runs on +48 volt phantom power. Gerber files, component values and more : https://github.com/Supermagnum/piezo-balanced
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Biasing a Jfet dual n channel FET, are the resistor values correct?
Electronic diagram with component values: https://github.com/Supermagnum/piezo-balanced/blob/main/piezo-jfet.pdf
What are some alternatives?
When comparing double-gain and piezo-balanced you can also consider the following projects:
C64-PSU-Combi - A PSU for the Commodore C64 and up to two 1541-II floppy disk drives
piezoelectric - A write-up with links to different versions of impedance buffer and amplifiers for piezoelectric elements.