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Old 4th October 2011, 02:42 AM   #1
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Default DIY LM1875 chip amp on strip board made simple

I recently completed a new pair of LM1875 based chip amp . This post is basically give an idea to other readers that want to construct a LM1875 chip based amp .... real quick n dirty ....

below are attached photos ....
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Old 4th October 2011, 03:45 AM   #2
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Quote:
Originally Posted by dannyjmf View Post
I recently completed a new pair of LM1875 based chip amp . This post is basically give an idea to other readers that want to construct a LM1875 chip based amp .... real quick n dirty ....

below are attached photos ....
Great job! Do you get enough power out of the dual transformers?
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Old 4th October 2011, 04:31 AM   #3
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still waiting to get another one when have enough $$$ .... the smaller one is in case i want to add opamp ....and now also power the two case fan .....
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Old 4th October 2011, 09:54 AM   #4
Bicolor is offline Bicolor  Sweden
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Nice work, I am thinking about building one myself "quick and dirty" style.
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Old 4th October 2011, 11:13 AM   #5
AndrewT is offline AndrewT  Scotland
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Does your mains power supply socket/plug have a third pin to protect the users from equipment faults?
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Old 4th October 2011, 01:34 PM   #6
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currently not yet .... but planning forward to do it later .... this is still under prototype ...
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Old 4th October 2011, 02:09 PM   #7
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another surprise i found ..... though i didn't really build a power supply with high capacitance value .... also using strip boards for these amps .... noise is almost inaudible ....
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Old 5th October 2011, 03:23 AM   #8
Leolo is offline Leolo  Canada
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The LM1875 has 94dB ripple rejection. I should HOPE your amp is low noise.
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