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Old 29th December 2009, 07:47 PM   #1
stven is offline stven  United States
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Default phono input

Does anyone have a suggestion for a simple circuit that can be integrated into a gainclone amp to allow input for a MM phono cartridge? I'd want to share the same power supply (+/- 32.6) and VC.

The cartridge has the following specs:
Recommended Load Impedance (ohms): 47,000
Output: 3.5 (mV at 1 kHz, 5 cm/sec)

thanks
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Old 30th December 2009, 01:55 AM   #2
digi01 is offline digi01  China
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i have built a phono stage based on 4*ne5534.i get the schematic from a very old book,year 1992 maybe earlier.it is working good.
the sch file attached.
zang
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File Type: jpg 2xNE5534_phono.jpg (77.5 KB, 56 views)
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Old 30th December 2009, 02:06 AM   #3
digi01 is offline digi01  China
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Quote:
Originally Posted by stven View Post
I'd want to share the same power supply (+/- 32.6) and VC.
then you have to use some regulated chip LM7815/LM7915 or LM317 to get a decent +/-15VDC to running the photo stage.
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