If your caps have blown up, your rectifier bridge is defective. One diode is conducting, you get part DC part AC and the capacitors cook up and blow.
Use better parts for the rectifier, just as anything in electronics, there are fake Chinese products around which may work for quite some time.
Use better parts for the rectifier, just as anything in electronics, there are fake Chinese products around which may work for quite some time.
unable. There is no problem with the linear power supply.
Maybe your power supply is short circuited and damaged. You can simply repair and connect the PCB.
Then install two fuses between DC + 70V dc-70.
Fuse of about 5A
A switching power supply may also be used. However, the damage rate of switching power supply is higher than that of ordinary transformer.
This is it+ plus a thoroidal. Both burned out. Do you build them ?
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I bought this one! Will it be ok? Aiyima is a good company. Innit ?80.000 mf Schott diodes!!!
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This is also a false capacitance. Don't buy. This is not my product.
My product will have my logo
L30D is designed by me. There is no problem.
You can buy this power board. It supports L30D
USE AC 50-0-50 transformer
In addition, L30D is very geothermal. It is recommended to add fans in summer.
You can refer to the temperature test data of iraudam9
In use, the temperature may exceed 104 ℃
If you don't have an amplifier.
L15d can be considered.
It uses ac36-0-36 transformer. Hardly generates heat. Naturally, it will not be damaged.
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Yes but please give to me the link to buy the power supply, will L15 work at 4 ohms ? What power in watts?
I don't know about this link. L15d is very easy to use.
Power is of no use. 2 amplifiers. One 50W. The other is 500W.
Maybe a 50W amplifier is better. The volume is higher.Even more expensive
So what's the use of power.
L15D =IRAUDAMP7S
L30D=IRAUDAMP9
Li todo o post e algo ainda ficou em dúvida.
O L25D pode acionar alto-falantes de 4ohm se alimentado +67 -67 já retificado?
A questão também é sobre alto-falantes de 6 ohms e a mesma tensão de alimentação.
Translated by moderation:
I read the whole post and something was still in doubt.
Can the L25D drive 4ohm speakers if powered +67 -67 already rectified?
The question is also about 6 ohm speakers and the same supply voltage.
O L25D pode acionar alto-falantes de 4ohm se alimentado +67 -67 já retificado?
A questão também é sobre alto-falantes de 6 ohms e a mesma tensão de alimentação.
Translated by moderation:I read the whole post and something was still in doubt.
Can the L25D drive 4ohm speakers if powered +67 -67 already rectified?
The question is also about 6 ohm speakers and the same supply voltage.
Goodnight.
I have an improved version of this circuit and with a size of 115mm x 52mm.
If you want, send me an email (luizcpimenta@gmail.com) and I'll share my project with you.
Yes, if your speakers are not power hungry and you do not listen very loudly.Li todo o post e algo ainda ficou em dúvida.
O L25D pode acionar alto-falantes de 4ohm se alimentado +67 -67 já retificado?
A questão também é sobre alto-falantes de 6 ohms e a mesma tensão de alimentação.
I read the whole post and something was still in doubt.
Can the L25D drive 4ohm speakers if powered +67 -67 already rectified?
The question is also about 6 ohm speakers and the same supply voltage.
Obrigado pela resposta.
Mesmo em 6 ohms? Ou essa regra só se aplica a 4 ohms? Porque 4 ohms era um valor fictício. Meus alto-falantes têm uma impedância de 6 ohms.
Good night guys!
I built my L25D, used a DC protection board, a small NE5533 preamp to get the necessary gain, a +64.5 -64.5 VDC linear source.
I noticed that the heatsinks get pretty hot even without signal.
It's normal?
6 ohm speakers.
I'm really liking the sound, it's nothing like the old Class D. It has good bass and airy mids and highs. My speakers are 3-way.
I built my L25D, used a DC protection board, a small NE5533 preamp to get the necessary gain, a +64.5 -64.5 VDC linear source.
I noticed that the heatsinks get pretty hot even without signal.
It's normal?
6 ohm speakers.
I'm really liking the sound, it's nothing like the old Class D. It has good bass and airy mids and highs. My speakers are 3-way.
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yes. Because the calorific value is determined by the voltage.
So L25D, including L20D, will be very hot.
If you don't need a high voltage output
I recommend L15D DC+- 50V. It has almost no obvious heat. Or L15DSMD
So L25D, including L20D, will be very hot.
If you don't need a high voltage output
I recommend L15D DC+- 50V. It has almost no obvious heat. Or L15DSMD
Thanks for the reply LJM.
But should I worry about this heating?
I wanted to used a power transformer that I already had with me.
The L25D was the first amplifier where I saw the possibility of using this transformer.
I did a test with a 120x120mm cooler on the outside of the case and the temperature dropped considerably.
If I put the cooler, can I be more relaxed about heating?
One note, last night the amp played all night, I left the test cooler off to see if the amp would trip due to overheating or some other problem and I ended up waking up with it playing music beautifully.
But should I worry about this heating?
I wanted to used a power transformer that I already had with me.
The L25D was the first amplifier where I saw the possibility of using this transformer.
I did a test with a 120x120mm cooler on the outside of the case and the temperature dropped considerably.
If I put the cooler, can I be more relaxed about heating?
One note, last night the amp played all night, I left the test cooler off to see if the amp would trip due to overheating or some other problem and I ended up waking up with it playing music beautifully.
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