What's wrong with my1943/5200 Mosfet Amplifier? Blown on first run
up vote
2
down vote
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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 10 hours ago
GeekWithGlasses
1136
add a comment |
up vote
2
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 10 hours ago
GeekWithGlasses
1136
add a comment |
up vote
2
down vote
favorite
up vote
2
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 10 hours ago
GeekWithGlasses
1136
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 10 hours ago
GeekWithGlasses
1136
asked 10 hours ago
GeekWithGlasses
1136
asked 10 hours ago
GeekWithGlasses
1136
asked 10 hours ago
GeekWithGlasses
1136
asked 10 hours ago
GeekWithGlasses
1136
1136
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
up vote
5
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 10 hours ago
Oldfart
7,7232825
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
2
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
2,904422
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
5
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 10 hours ago
Oldfart
7,7232825
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
5
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 10 hours ago
Oldfart
7,7232825
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
5
down vote
accepted
up vote
5
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 10 hours ago
Oldfart
7,7232825
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 10 hours ago
Oldfart
7,7232825
answered 10 hours ago
Oldfart
7,7232825
answered 10 hours ago
Oldfart
7,7232825
answered 10 hours ago
Oldfart
7,7232825
7,7232825
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
2
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
2,904422
add a comment |
up vote
2
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
2,904422
add a comment |
up vote
2
down vote
up vote
2
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
2,904422
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
2,904422
answered 9 hours ago
Edgar Brown
2,904422
answered 9 hours ago
Edgar Brown
2,904422
answered 9 hours ago
Edgar Brown
2,904422
2,904422
add a comment |
add a comment |
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