Chinese AODA
The origin China Manufacturer is AODA
www.cn-aoda.com
look here
Enping Aoda Electronic Technology Co., Ltd
PRONOMIC = old heavy technology from the past
you get for this much EUR SMPS light weight Class H amps
from LEX
Switching Mode Class H amplifier
German Distributor is available for LEX ....
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chestap amp components
Hi Nazirdigi
greetings
1 104 250 volts better X2 ac
2 222 500 VOLTS
3 101 500 VOLT
4 100 UF 40 VOLTS
5 47 n 250 volts
warm regards
andrew lebon
Hi Nazirdigi
greetings
1 104 250 volts better X2 ac
2 222 500 VOLTS
3 101 500 VOLT
4 100 UF 40 VOLTS
5 47 n 250 volts
warm regards
andrew lebon
hi irvynjay and andrewlebon,
pls guide me.
1-when first power up two led's lights on in the driver board,
2-i set dc offset to omv with the 500ohm preset.
3-i set the bias preset to half turn ,
4-protection section working with 12v dc,
-active led is on, when the 12vc power given,
-protection led is on, after relay active the led is off,
-when power off the amp, the clip led is light on and slowly off,
5-i provide signal to the amp, but out signal not comming, what will be the problem?
pls guide me.
1-when first power up two led's lights on in the driver board,
2-i set dc offset to omv with the 500ohm preset.
3-i set the bias preset to half turn ,
4-protection section working with 12v dc,
-active led is on, when the 12vc power given,
-protection led is on, after relay active the led is off,
-when power off the amp, the clip led is light on and slowly off,
5-i provide signal to the amp, but out signal not comming, what will be the problem?
Attachments
Hi Nazirdigi
greetings please check NC/NO relay connections on pcb if i am not sure pcb track has to be cut
warm regards
andrew lebon
greetings please check NC/NO relay connections on pcb if i am not sure pcb track has to be cut
warm regards
andrew lebon
Hi andrewlebon,
Thanks for the reply andrewlebon,
i already cut the pin from relay.
nice amp
hello Nazirdigi, where did you buy those heat sink that you use in your amp?
regards,
mj777
hello Nazirdigi, where did you buy those heat sink that you use in your amp?
regards,
mj777
So how you solve you problem nazirdigi? am i correct? pre driver need heatsink ,
temprature will increase but its normal
temprature will increase but its normal
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hi irvynejay,
i think one of my mje's bad.
now i feed audio and sound is very good. and no heat on heatsink.
output base voltage is 180mv dc, but emitter resistor across in 0v i adjust the preset but nothing happenning,
thanks ,
now the amp is working perfect.
dc offset 10mv, i adjust bias emiter resistor to 5mvdc and woks perfect.
dc offset 10mv, i adjust bias emiter resistor to 5mvdc and woks perfect.
About bias
which resistor used to across 5mvdc and any other change in your circuit ?
hi ravpeet.
.33 5w resistor.
only one change 18k/2w resistor in .33/5w in that place.