TOOOOOO hot...

swaroopvg · 6th July 2006, 04:41 AM

i am powering my 100 watts Rms 8" dainty from a TDa 2030 4 IC stereo board...( 40+40 watts) with tiny heast sink

whhich demands 12-0-12 at approx 5 amp.... i modified my car battery charger to deliver approx 15 volt @ 3 amp...

now IC r boiling hot after a few minutes of operation... can that be due to the above power supply prob... please suggest a solution

gmphadte · 6th July 2006, 04:55 AM

U have made a dual supply (+/- 12V)from a single output charger, is it right?

Hope the charger is fitted with filter capacitors, and the voltage does not increase beyond the IC specs.

Fix a bigger heatsink for each of the ICs.

Gajanan Phadte

swaroopvg · 6th July 2006, 09:07 AM

can u plz gimme the specifiacation oif the filter capacitors to be used and besides.. how do i reduce the voltage from 15 volt to 12 volt...

ya dual supply

gmphadte · 6th July 2006, 11:34 AM

First of all, does the amp has single supply or dual supply?
If ur amp needs dual supply, your charger should have centre taped transformer, if not forget it.

The filter capacitors can be any value from 2200 microfarad to 10000 microfarad. The capacitors should be rated for 25 volts or higher. U can connect capacitors in parallel to add up the values. Watch polarity and on first power up, keep your face/body away from the assembly.

TDA2030 needs less than +/- 18 volts. so 15 volts after filtering is ok.
U better draw what u have done, and post so that we can be sure.

Gajanan Phadte

6th July 2006, 04:41 AM	#1
swaroopvg diyAudio Member Join Date: Jun 2006	TOOOOOO hot... i am powering my 100 watts Rms 8" dainty from a TDa 2030 4 IC stereo board...( 40+40 watts) with tiny heast sink whhich demands 12-0-12 at approx 5 amp.... i modified my car battery charger to deliver approx 15 volt @ 3 amp... now IC r boiling hot after a few minutes of operation... can that be due to the above power supply prob... please suggest a solution

6th July 2006, 09:07 AM	#3
swaroopvg diyAudio Member Join Date: Jun 2006	filter capacitors.... can u plz gimme the specifiacation oif the filter capacitors to be used and besides.. how do i reduce the voltage from 15 volt to 12 volt... ya dual supply

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6th July 2006, 04:55 AM	#2
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	U have made a dual supply (+/- 12V)from a single output charger, is it right? Hope the charger is fitted with filter capacitors, and the voltage does not increase beyond the IC specs. Fix a bigger heatsink for each of the ICs. Gajanan Phadte

6th July 2006, 11:34 AM	#4
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	First of all, does the amp has single supply or dual supply? If ur amp needs dual supply, your charger should have centre taped transformer, if not forget it. The filter capacitors can be any value from 2200 microfarad to 10000 microfarad. The capacitors should be rated for 25 volts or higher. U can connect capacitors in parallel to add up the values. Watch polarity and on first power up, keep your face/body away from the assembly. TDA2030 needs less than +/- 18 volts. so 15 volts after filtering is ok. U better draw what u have done, and post so that we can be sure. Gajanan Phadte