What's wrong with my1943/5200 Mosfet Amplifier? Blown on first run
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 Dec 15 at 19:06
GeekWithGlasses
1136
add a comment |
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 Dec 15 at 19:06
GeekWithGlasses
1136
add a comment |
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 Dec 15 at 19:06
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 Dec 15 at 19:06
GeekWithGlasses
1136
asked Dec 15 at 19:06
GeekWithGlasses
1136
asked Dec 15 at 19:06
GeekWithGlasses
1136
asked Dec 15 at 19:06
GeekWithGlasses
1136
asked Dec 15 at 19:06
GeekWithGlasses
1136
1136
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
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 Dec 15 at 19:31
Oldfart
7,8862825
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
Dec 15 at 19:37
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
Dec 15 at 19:55
add a comment |
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 Dec 15 at 19:38
Edgar Brown
3,431425
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
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 Dec 15 at 19:31
Oldfart
7,8862825
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
Dec 15 at 19:37
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
Dec 15 at 19:55
add a comment |
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 Dec 15 at 19:31
Oldfart
7,8862825
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
Dec 15 at 19:37
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
Dec 15 at 19:55
add a comment |
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 Dec 15 at 19:31
Oldfart
7,8862825
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 Dec 15 at 19:31
Oldfart
7,8862825
answered Dec 15 at 19:31
Oldfart
7,8862825
answered Dec 15 at 19:31
Oldfart
7,8862825
answered Dec 15 at 19:31
Oldfart
7,8862825
7,8862825
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
Dec 15 at 19:37
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
Dec 15 at 19:55
add a comment |
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
Dec 15 at 19:37
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
Dec 15 at 19:55
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
Dec 15 at 19:37
what about damaged components? Will me mosfets be okay?
– GeekWithGlasses
Dec 15 at 19:37
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
Dec 15 at 19:55
Impossible to say. With a bit of luck the capacitor somewhat limited the brunt.of the negative voltage.
– Oldfart
Dec 15 at 19:55
add a comment |
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 Dec 15 at 19:38
Edgar Brown
3,431425
add a comment |
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 Dec 15 at 19:38
Edgar Brown
3,431425
add a comment |
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 Dec 15 at 19:38
Edgar Brown
3,431425
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 Dec 15 at 19:38
Edgar Brown
3,431425
answered Dec 15 at 19:38
Edgar Brown
3,431425
answered Dec 15 at 19:38
Edgar Brown
3,431425
answered Dec 15 at 19:38
Edgar Brown
3,431425
3,431425
add a comment |
add a comment |
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