CaptBubba
Not dumb enough fora custom title...so he thought.
- Joined
- Jun 30, 2001
- Posts
- 1,615
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- 11
I've always used a small analouge multimeter for just about everything I do that concerns electronics. I used this mm on my DIY amp and power supply for everthing from matching resistors to setting the voltage on the regulator. In a lower thred I was worried about my amp not getting hot, well now I've found out why.
Apparently my mm was off, a lot. It was reading 15V when it was only 9, and the resistance values were just nuts. I discovered the problem by accident. I was setting up to check how much current the amp was drawing with a nice digital mm I had stumbled upon (it had a higher current rating), and a fuse was missing in it. I was bored so I checked a few things, including the outpuit of the power supply.
Anyway, my amp is now at the proper voltage (as checked by 3 mms), and I've learned a lesson. Make sure your equpment is up to snuf, this could have led to a bad ending, such as a fire if too much voltage was applied. Oh, how accurate are these digital mms? Will they eventualy drift from accuracy like my old one did?
Apparently my mm was off, a lot. It was reading 15V when it was only 9, and the resistance values were just nuts. I discovered the problem by accident. I was setting up to check how much current the amp was drawing with a nice digital mm I had stumbled upon (it had a higher current rating), and a fuse was missing in it. I was bored so I checked a few things, including the outpuit of the power supply.
Anyway, my amp is now at the proper voltage (as checked by 3 mms), and I've learned a lesson. Make sure your equpment is up to snuf, this could have led to a bad ending, such as a fire if too much voltage was applied. Oh, how accurate are these digital mms? Will they eventualy drift from accuracy like my old one did?