Dragon Tamer
Member
I was helping one of my friends build a VU meter using an LM3915, and it didn't work. I don't know what went wrong (I even built the circuit myself and it still didn't work). I think that we may have destroyed the chip so we plan on replacing it with a new one. This is the circuit that we made:**broken link removed**
The voltage supply was a PSU that had an output of 15V DC, and a current supply of 12A max. Our input was a function generator. We had an 8.2Ω resistor to simulate the speaker load.
We can't seem to figure out what went wrong, if someone could shed some light on the issue it would be appreciated.
The voltage supply was a PSU that had an output of 15V DC, and a current supply of 12A max. Our input was a function generator. We had an 8.2Ω resistor to simulate the speaker load.
We can't seem to figure out what went wrong, if someone could shed some light on the issue it would be appreciated.