I bought a tda8950 for my first amp project, when I put it together and pluged it in the led light turns on and then over the next 20 second the light gets dimer and dimer until it goes out. I haven't got it to work, the transformer i am using to power it is outputing 22v.
the recommeded power for it is 16 to 28 volts.
and that is about all I know about it, is there more i need to do for it to work?
any advice would be appreciated.
the recommeded power for it is 16 to 28 volts.
and that is about all I know about it, is there more i need to do for it to work?
any advice would be appreciated.
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Always have a load (speaker or adequate load resistor) on the output terminals.
Some class D amps will damage the output filter caps if not loaded.
Some class D amps will damage the output filter caps if not loaded.
I can't really see how the power is supposed to be connected...what is the case ground wire doing?
Could you draw out how power is connected in MS paint or something.
Could you draw out how power is connected in MS paint or something.
You need to redo the wiring from transformer. The transformer should be 22-0-22, and all three wires should go to the amplifier board
I checked my wiring from my transformer again because i was checking voltage between the red and the black wire and so I checked the voltage of the individual wires and ground and this is what I found, the black wire was putting out 10v, one of the red wires was putting out 5.5v, and the other red wire was putting out 27v.
my ground was connected to the fram and then to the ground plug in wire.
Any suggestion on what transformer would be best for this amp?
my ground was connected to the fram and then to the ground plug in wire.
Any suggestion on what transformer would be best for this amp?
I got 22v evidently from ether of the red wires with the black wire using my multi-meter that was the problem, hopefully the amp is not fried.
Typical hookup for "22-0-22" or other voltage for these types of amps.
FYI ... i am also using this same class D TDA8950 amplifier module ... its power supply supposed to be using AC 18V - 0V - 18V as it already has its own on board Bridges and filter caps ... hope this helps ...
I bought a tda8950 for my first amp project, when I put it together and pluged it in the led light turns on and then over the next 20 second the light gets dimer and dimer until it goes out. I haven't got it to work, the transformer i am using to power it is outputing 22v.
the recommeded power for it is 16 to 28 volts.
and that is about all I know about it, is there more i need to do for it to work?
any advice would be appreciated.
Ok ... for the power wires (the 2 red ones and the black ones) ... i need to know which are the wires that carries the AC voltage from the power transformer and which is the center tap ... (pls provide the information here only i will be able to help out) FYI i am using this same amplifier module as yours and it already served me for one years ... no trouble and keep getting alot of punishment (bcos they were doing bass duty for subwoofer)
photos below were mine ... two orange wires were 18V and the grey as the center tap 0V
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22 volts is just right - and even up to 26 volt. You also need 4-6Amperes per winding.
If you don't know you transformer, then buy a new one. You need one with center tap (22-0-22) and around 300 watt (150 watt per winding)
If you don't know you transformer, then buy a new one. You need one with center tap (22-0-22) and around 300 watt (150 watt per winding)
would his transformer work
High Quality 24V DC 13 3A 320W Regulated Switching Power Supply Transformer | eBay
High Quality 24V DC 13 3A 320W Regulated Switching Power Supply Transformer | eBay
would his transformer work
High Quality 24V DC 13 3A 320W Regulated Switching Power Supply Transformer | eBay
If you try to read carefully at the voltage requirement at the terminal of the amplifier module ... there it will be stated AC GND AC ... this means that this amplifier module will only accepts AC in and not DC power supply ... your best bet to get this amplifier get working is to get a proper toroidal transformer with 18V 0V 18V (they are AC outputs and should be fairly easy to get anywhere) rated at least 250W ... it is not too hard to get this amplifier working as it is fairly straightforward stuff ... Good luck
You can use DC in, but their will be some loss, so not the most effective way to make the amplifier, and also the most expensive.
would his transformer work
High Quality 24V DC 13 3A 320W Regulated Switching Power Supply Transformer | eBay
No its a single supply. Eventhough its DC you still need dual output and gnd
like this one
Yuan Jing Audio - Switching Mode Power Supply SMPS 200W +/- 25V. +/- 15V - USD $38.40
But you will be better off with just a good transformer
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