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13th May 2005, 04:21 PM
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#1 |
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diyAudio Member
Join Date: May 2004
Location: shinjuku
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when i short circuit the C the music comeout. Does the ic broken?
I make amp 40w tda1560q.
It use external 2 capacitors 2200uF to help make high voltage. I use circuit in its datasheet. Its has sound of distortion all the time, no music out. When i short circuit the C 2200uF on the left, the music comeout. I think one of the circuit in the ic that make voltage is broken. I never make a risk that ic can broken. Does the ic broken?
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jinkuchi |
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13th May 2005, 07:36 PM
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#2 |
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diyAudio Member
Join Date: Feb 2003
Location: Somerset, SW England
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Can you show us a circuit of exactly what you have built.
It sounds like you have the cap in series with the rail which would be wrong!
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The truth need not be veiled, for it veils itself from the eyes of the ignorant. |
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14th May 2005, 01:05 AM
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#3 | |
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Banned
Join Date: Mar 2003
Location: Lisbon, Portugal
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Quote:
These are car-audio BTL "class-H" chips, they have a pair of caps between two pins each for lifting the voltage after a certain power output, when the class-H circuit kicks in. Otherwise it would not be possible to have such a power with only a single 12v battery. This chip is similar to the TDA1562, but with less power. I don't know what the problem can be, though...  Maby a faulty chip, but they are not cheap... the TDA1562 costs ~15€ around here. |
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14th May 2005, 08:21 AM
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#4 | |
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diyAudio Member
Join Date: Feb 2003
Location: Somerset, SW England
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Quote:
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The truth need not be veiled, for it veils itself from the eyes of the ignorant. |
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14th May 2005, 02:42 PM
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#7 | |
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diyAudio Member
Join Date: Mar 2002
Location: Aveiro-Portugal
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Re: when i short circuit the C the music comeout. Does the ic broken?
Quote:
Is the pin 17 of the IC connected to ground? If not , connect it to ground... Regards Jorge
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Jorge |
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15th May 2005, 02:37 PM
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#8 |
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diyAudio Member
Join Date: May 2004
Location: shinjuku
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I connect pin 17 to ground, nothing happen. it's same. but i feel the ic is hoter.
now it's have many of pop sound. when no signal it's quiet. but when i turn volume higher it has many of pop sound. when turn volume down it quiet.
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jinkuchi |
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