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27th December 2012, 07:32 PM
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#11 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Does it at any time produce pulses on the gates or drains of the power supply FETs?
__________________
Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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30th December 2012, 09:33 AM
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#12 |
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diyAudio Member
Join Date: May 2010
Location: Washington State
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The drains remain at supply voltage, the gates have about 0.356 vdc on them.
I didnt notice any pulsing.
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch |
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30th December 2012, 09:46 AM
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#13 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Post the DC voltage on all pins of IC602.
__________________
Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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3rd January 2013, 04:00 AM
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#14 |
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diyAudio Member
Join Date: May 2010
Location: Washington State
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Im sorry Perry I dont find an IC602 on the board?
Is it on the bottom side of the board? I see an IC206 but its on the output side of the board and I have the 6 pin wire unplugged still?
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch |
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3rd January 2013, 04:07 AM
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#15 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Yes. It's on the bottom of the board. It's one of the 494s.
__________________
Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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3rd January 2013, 04:17 AM
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#16 |
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diyAudio Member
Join Date: May 2010
Location: Washington State
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Will it be safe to power the amp out of the sink disconnected from the output board upside down?
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch |
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3rd January 2013, 04:29 AM
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#17 |
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diyAudio Member
Join Date: May 2010
Location: Washington State
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I see 2 494's one says IC601 and one says IC605.
Shall I take readings from both? Do I use the battery terminal or direct battery terminal or both when powering this amp? When I power the amp its like it starts to power up drawing a few amps of current then drops to nothing on the meter of my supply.
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch |
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3rd January 2013, 04:50 AM
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#18 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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You can use either terminal.
The IC602 is printed mirror image, if you look closely.
__________________
Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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3rd January 2013, 04:53 AM
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#19 |
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diyAudio Member
Join Date: May 2010
Location: Washington State
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IC601
1: 0.967 2: 0.963 3: 3.850 4: 0.221 5: 1.668 6: 1.670 7: 0.004 8: 14.53 9: 0.410 10: 0.427 11: 14.53 12: 14.53 13: 5.05 14: 5.05 15: 5.05 16: 0.004 IC605 1: 0.954 2: 0.952 3: 3.873 4: 0.220 5: 1.674 6: 3.762 7: 0.004 8: 14.53 9: 0.433 10: 0.428 11: 14.53 12: 14.53 13: 5.05 14: 5.05 15: 5.05 16: 0.003
__________________
Pyramid 52 Amp Power Supply----Fluke 787 Processmeter----Tektronix 465 Scope----Velleman HPS40 Scope----Soldering Iron----Desoldering Iron----Hejet HJ 500-S Heatgun----DM4070 Digital LCR Meter----Propane Torch |
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3rd January 2013, 05:01 AM
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#20 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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Reduce the supply voltage to about 13.5v. Does that help?
__________________
Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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