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Old 30th March 2010, 09:16 PM   #1
JO12 is offline JO12  Dubai
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Default PRE-Amp for tda please

HI allll
I build a circuit amplifier i used tda2050 the first circuit in tha data sheet
I neeeeeed Pre- amplifier for dynamic mic
which is the best circuit you recommend
thanksssssss a lot
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Old 30th March 2010, 10:50 PM   #2
Minion is offline Minion  Canada
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Location: Cowican Bay , vancouver island
Try this ....

http://focus.ti.com/lit/ds/symlink/ina217.pdf


There"s a schematic in figure #4
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Old 1st April 2010, 05:46 PM   #3
JO12 is offline JO12  Dubai
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sorry I didn't find this ic ina217 and SSM2017
could you please put another circuit for dynamic mic special for tda 2050

thank you ,,,,,
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Old 1st April 2010, 06:23 PM   #4
Mooly is offline Mooly  United Kingdom
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Why not just use a modern bipolar opamp such as LM4562 or even the NE5532.

This is a typical application found in many data sheets.
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