What's wrong with my1943/5200 Mosfet Amplifier? Blown on first run
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1
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I have just brought an 1943/5200 mosfet based amplifier board. Shopkeeper said it's rated for 24-0-24 AC.
So I connected it with 24-0-24 transformer like this in image below.
As soon as I turned the power supply, I heard a loud hum from transformer, Like it was on full load. and few seconds later cap. on left side blown.
(I have also got a loud noise from my speakers also like I have passed 24VAC through em.)
I have no Idea why this happened. Did I made some mistake?
Is circuit is actuality meant for 24-0-24 DC?
What now? can I still revive my circuit? What are the components which might have died in the process? are my mosfet's are still okay?
mosfet circuit-analysis amplifier audio power-amplifier
asked 9 hours ago
GeekWithGlasses
1086
add a comment |
up vote
1
down vote
favorite
I have just brought an 1943/5200 mosfet based amplifier board. Shopkeeper said it's rated for 24-0-24 AC.
So I connected it with 24-0-24 transformer like this in image below.
As soon as I turned the power supply, I heard a loud hum from transformer, Like it was on full load. and few seconds later cap. on left side blown.
(I have also got a loud noise from my speakers also like I have passed 24VAC through em.)
I have no Idea why this happened. Did I made some mistake?
Is circuit is actuality meant for 24-0-24 DC?
What now? can I still revive my circuit? What are the components which might have died in the process? are my mosfet's are still okay?
mosfet circuit-analysis amplifier audio power-amplifier
asked 9 hours ago
GeekWithGlasses
1086
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I have just brought an 1943/5200 mosfet based amplifier board. Shopkeeper said it's rated for 24-0-24 AC.
So I connected it with 24-0-24 transformer like this in image below.
As soon as I turned the power supply, I heard a loud hum from transformer, Like it was on full load. and few seconds later cap. on left side blown.
(I have also got a loud noise from my speakers also like I have passed 24VAC through em.)
I have no Idea why this happened. Did I made some mistake?
Is circuit is actuality meant for 24-0-24 DC?
What now? can I still revive my circuit? What are the components which might have died in the process? are my mosfet's are still okay?
mosfet circuit-analysis amplifier audio power-amplifier
asked 9 hours ago
GeekWithGlasses
1086
I have just brought an 1943/5200 mosfet based amplifier board. Shopkeeper said it's rated for 24-0-24 AC.
So I connected it with 24-0-24 transformer like this in image below.
As soon as I turned the power supply, I heard a loud hum from transformer, Like it was on full load. and few seconds later cap. on left side blown.
(I have also got a loud noise from my speakers also like I have passed 24VAC through em.)
I have no Idea why this happened. Did I made some mistake?
Is circuit is actuality meant for 24-0-24 DC?
What now? can I still revive my circuit? What are the components which might have died in the process? are my mosfet's are still okay?
mosfet circuit-analysis amplifier audio power-amplifier
mosfet circuit-analysis amplifier audio power-amplifier
asked 9 hours ago
GeekWithGlasses
1086
asked 9 hours ago
GeekWithGlasses
1086
asked 9 hours ago
GeekWithGlasses
1086
asked 9 hours ago
GeekWithGlasses
1086
asked 9 hours ago
GeekWithGlasses
1086
1086
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
up vote
4
down vote
accepted
That the amplifier needs a DC supply, not AC. The + G - is a strong give away. An AC power input would likely have a pair of ~ symbols.
Also an AC input would need at least a bridge rectifier and a big capacitor. I spot neither near the power supply connector.
answered 9 hours ago
Oldfart
7,7132825
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
9 hours ago
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
9 hours ago
add a comment |
up vote
1
down vote
24Vac would not be marked by “+” and “-“ on a circuit board or schematic. Furthermore it would not be specified as 24-0-24 either. Either your shopkeeper was mistaken or you misunderstood him.
That looks like a DC connection probably expecting +24, -24, and Gnd. That capacitor seems to be across the input supply. It is a polarized capacitor so it will fail on AC (you should check maximum voltage specification on it).
It is impossible to know what else might have failed under those conditions.
answered 9 hours ago
Edgar Brown
2,894422
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
4
down vote
accepted
That the amplifier needs a DC supply, not AC. The + G - is a strong give away. An AC power input would likely have a pair of ~ symbols.
Also an AC input would need at least a bridge rectifier and a big capacitor. I spot neither near the power supply connector.
answered 9 hours ago
Oldfart
7,7132825
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
9 hours ago
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
9 hours ago
add a comment |
up vote
4
down vote
accepted
That the amplifier needs a DC supply, not AC. The + G - is a strong give away. An AC power input would likely have a pair of ~ symbols.
Also an AC input would need at least a bridge rectifier and a big capacitor. I spot neither near the power supply connector.
answered 9 hours ago
Oldfart
7,7132825
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
9 hours ago
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
9 hours ago
add a comment |
up vote
4
down vote
accepted
up vote
4
down vote
accepted
That the amplifier needs a DC supply, not AC. The + G - is a strong give away. An AC power input would likely have a pair of ~ symbols.
Also an AC input would need at least a bridge rectifier and a big capacitor. I spot neither near the power supply connector.
answered 9 hours ago
Oldfart
7,7132825
That the amplifier needs a DC supply, not AC. The + G - is a strong give away. An AC power input would likely have a pair of ~ symbols.
Also an AC input would need at least a bridge rectifier and a big capacitor. I spot neither near the power supply connector.
answered 9 hours ago
Oldfart
7,7132825
answered 9 hours ago
Oldfart
7,7132825
answered 9 hours ago
Oldfart
7,7132825
answered 9 hours ago
Oldfart
7,7132825
7,7132825
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
9 hours ago
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
9 hours ago
add a comment |
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
9 hours ago
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
9 hours ago
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
9 hours ago
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
9 hours ago
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
9 hours ago
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
9 hours ago
add a comment |
up vote
1
down vote
24Vac would not be marked by “+” and “-“ on a circuit board or schematic. Furthermore it would not be specified as 24-0-24 either. Either your shopkeeper was mistaken or you misunderstood him.
That looks like a DC connection probably expecting +24, -24, and Gnd. That capacitor seems to be across the input supply. It is a polarized capacitor so it will fail on AC (you should check maximum voltage specification on it).
It is impossible to know what else might have failed under those conditions.
answered 9 hours ago
Edgar Brown
2,894422
add a comment |
up vote
1
down vote
24Vac would not be marked by “+” and “-“ on a circuit board or schematic. Furthermore it would not be specified as 24-0-24 either. Either your shopkeeper was mistaken or you misunderstood him.
That looks like a DC connection probably expecting +24, -24, and Gnd. That capacitor seems to be across the input supply. It is a polarized capacitor so it will fail on AC (you should check maximum voltage specification on it).
It is impossible to know what else might have failed under those conditions.
answered 9 hours ago
Edgar Brown
2,894422
add a comment |
up vote
1
down vote
up vote
1
down vote
24Vac would not be marked by “+” and “-“ on a circuit board or schematic. Furthermore it would not be specified as 24-0-24 either. Either your shopkeeper was mistaken or you misunderstood him.
That looks like a DC connection probably expecting +24, -24, and Gnd. That capacitor seems to be across the input supply. It is a polarized capacitor so it will fail on AC (you should check maximum voltage specification on it).
It is impossible to know what else might have failed under those conditions.
answered 9 hours ago
Edgar Brown
2,894422
24Vac would not be marked by “+” and “-“ on a circuit board or schematic. Furthermore it would not be specified as 24-0-24 either. Either your shopkeeper was mistaken or you misunderstood him.
That looks like a DC connection probably expecting +24, -24, and Gnd. That capacitor seems to be across the input supply. It is a polarized capacitor so it will fail on AC (you should check maximum voltage specification on it).
It is impossible to know what else might have failed under those conditions.
answered 9 hours ago
Edgar Brown
2,894422
answered 9 hours ago
Edgar Brown
2,894422
answered 9 hours ago
Edgar Brown
2,894422
answered 9 hours ago
Edgar Brown
2,894422
2,894422
add a comment |
add a comment |
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