This is a blank PCB plus front and rear case panels to build a "Sound Card Interface / AC RMS Voltmeter". This is a device that connects to your PC sound card, and (used with available FFT and other audio analysis software) enables it to be used as a high-quality audio test system. For full details on the design, including pictures, measurements, schematics, bill of materials, etc. refer to my web site:
The interface performs a number of functions, including:
- Provides a high impedance (100k ohms), floating input to connect to the device under test (audio amp, etc.)
- Protects your sound card input from excessive voltage (up to 200VAC & 400VDC!)
- Allows scaling or amplifying the input, from 200mV to 200V full-scale
- Amplifies and buffers the sound card output to use as a source (both balanced and unbalanced)
- Provides an accurate AC RMS voltmeter
This auction is for is the PCB, front, and rear panels only, nothing else is included. Photo of completed unit is for reference only!
Will ship anywhere. Flat rate shipping is shown. Payment by PayPal only.
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