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Chip Amps Amplifiers based on integrated circuits

Diagnosing hum???
Diagnosing hum???
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Old 4th August 2010, 03:30 AM   #11
jstan is offline jstan  United States
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Join Date: Jun 2010
Wow Tom! That's a serious bit of electronics information and will take me a few read throughs to fully understand (after reading it twice, I think I get the gist though). I think the take home message for future projects boils down to using a shorter umbilical with separate conductors for every ground. Thanks for taking the time to explain that.
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Old 4th August 2010, 05:40 AM   #12
tauro0221 is offline tauro0221  United States
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Location: Victoria,TX
Hi,
You do not need to have an scope to check if a DC power supply have ripples. Use a voltmeter in AC and read the voltage. The reading should be almost zero is you do not have ripples. The only time that you will have a reading of zero is when your are reading a voltage from a battery. That is what you call pure DC. In a good power supply some millivolts would be find. The lower the reading the better is the power filtering filtering.
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Old 4th August 2010, 04:00 PM   #13
Gary Diamond is offline Gary Diamond  United States
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Location: Southbury CT
Quote:
Originally Posted by tauro0221 View Post
Hi,
You do not need to have an scope to check if a DC power supply have ripples. Use a voltmeter in AC and read the voltage. The reading should be almost zero is you do not have ripples. The only time that you will have a reading of zero is when your are reading a voltage from a battery. That is what you call pure DC. In a good power supply some millivolts would be find. The lower the reading the better is the power filtering filtering.
Your 100% right, you forgot about that when you have a good scope around
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