Electronics > Beginners
I dont know how to wire this simple amp
Richard Crowley:
Note that a true Class-D amplifier typically has a FLOATING output where NEITHER side is allowed to be grounded.
They must be connected to a floating load. Typically a speaker voice-coil.
If you were really using a Class-D amplifier, then one possibility could be that you have grounded one side of the output. Perhaps to test gear.
But since you have identified your board as using a TDA2030A chip, then it is not a "Class-D" amplifier as originally stated.
Hextejas:
Sheesh, such a simple problem to generate this much discussion. I bought these amps as throw away items, no tears if I burn them up.
What I need it for is for testing a tuner to see if a 1khz signal is getting through. I wanted a very small footprint, easy connections to a very small footprint speaker. I have limited space on my work bench so this beast looks ideal.
It sounds like I will need to give it more juice. I had not bothered reading the spec sheet, I just assumed that the 9v battery would be ample.
Thanks.
Richard Crowley:
--- Quote from: Hextejas on September 02, 2018, 09:22:37 pm ---Sheesh, such a simple problem to generate this much discussion. I bought these amps as throw away items, no tears if I burn them up.
--- End quote ---
You asked a good question. But remember that your question, the clarifications, and the responses are not JUST about YOU They are archived here for the benefit of hundreds or thousands of future readers with a similar question or issue.
6PTsocket:
--- Quote from: Hextejas on September 02, 2018, 09:22:37 pm ---Sheesh, such a simple problem to generate this much discussion. I bought these amps as throw away items, no tears if I burn them up.
What I need it for is for testing a tuner to see if a 1khz signal is getting through. I wanted a very small footprint, easy connections to a very small footprint speaker. I have limited space on my work bench so this beast looks ideal.
It sounds like I will need to give it more juice. I had not bothered reading the spec sheet, I just assumed that the 9v battery would be ample.
Thanks.
--- End quote ---
Two 9 volt batteries should do the trick. If you run with a single power supply you will need a capacitor to couple a speaker to the amp or you will have half the DC voltage on the speaker. Not a good thing. It is amazing how all the ebay sellers have the same bad info. on their sites. I guess they all get them from the same wholesale source in China.
Sent from my SM-G900V using Tapatalk
Hextejas:
--- Quote from: 6PTsocket on September 02, 2018, 11:50:28 pm ---
--- Quote from: Hextejas on September 02, 2018, 09:22:37 pm ---Sheesh, such a simple problem to generate this much discussion. I bought these amps as throw away items, no tears if I burn them up.
What I need it for is for testing a tuner to see if a 1khz signal is getting through. I wanted a very small footprint, easy connections to a very small footprint speaker. I have limited space on my work bench so this beast looks ideal.
It sounds like I will need to give it more juice. I had not bothered reading the spec sheet, I just assumed that the 9v battery would be ample.
Thanks.
--- End quote ---
Two 9 volt batteries should do the trick. If you run with a single power supply you will need a capacitor to couple a speaker to the amp or you will have half the DC voltage on the speaker. Not a good thing. It is amazing how all the ebay sellers have the same bad info. on their sites. I guess they all get them from the same wholesale source in China.
Sent from my SM-G900V using Tapatalk
--- End quote ---
6pt, thank you, and could you point me to some reading material that could explain why it would be " a bad thing " for me to wire my desktop 18v supply to this amp. Cause that is exactly what I was planning on doing.
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