the transformer should be able to deliver at least 750W, and should have one centre tap winding with 2x55-2x60V AC at at least 7A and another centre tapped winding wich has with about 4-8V more than the previous one and 50-100mA current.
i recommend to use one supply board for each amplifier module.
i recommend to use one supply board for each amplifier module.
power supply
Hi cnx
I want to use a mean well power supply (27V DC) with the TA2022. When I connect the +VCC and -VCC of the power supply on the board (at the place +Vcc and - VCC soldering 2 wires on the board), the board dont works, the mute led is on and the power led go on and then slowly down. What is wrong ?
The board works right if I supply with a transformer on AC plugs. ?
regards
Hi cnx
I want to use a mean well power supply (27V DC) with the TA2022. When I connect the +VCC and -VCC of the power supply on the board (at the place +Vcc and - VCC soldering 2 wires on the board), the board dont works, the mute led is on and the power led go on and then slowly down. What is wrong ?
The board works right if I supply with a transformer on AC plugs. ?
regards
J,
First, make sure that the SMPS has differential volage output, +-27V which means there will be +27V with respect to GND and a -27V with respect to GND. between the + and - should be 54V. single supply will not work properly since the voltage is not enough and by connecting just between + and - without GND is also not good. the current consumption on the positive rail and negative rail is not equal and it will create a voltage unballance which can destroy the ic if one rail have a voltage higher with 10V than other one.
First, make sure that the SMPS has differential volage output, +-27V which means there will be +27V with respect to GND and a -27V with respect to GND. between the + and - should be 54V. single supply will not work properly since the voltage is not enough and by connecting just between + and - without GND is also not good. the current consumption on the positive rail and negative rail is not equal and it will create a voltage unballance which can destroy the ic if one rail have a voltage higher with 10V than other one.
Ta3020v4
New version of the TA3020 amplifier will be released soon. here are some pics of the prototype. This new version has the speaker protection, and SMPS on board. it is a compact design, just 100x200mm and includes about all what is needed for a complete medium power (250-400W/channel) class T amplifier.
New version of the TA3020 amplifier will be released soon. here are some pics of the prototype. This new version has the speaker protection, and SMPS on board. it is a compact design, just 100x200mm and includes about all what is needed for a complete medium power (250-400W/channel) class T amplifier.
Attachments
)If everything goes according to plan (in most cases doesn't; according to Murphy's laws) in about 2 weeks from now. i prepare the boards and parts for assembly then after assembly and tests they will be available for sale. Then i will know the price also, since i haven't got the assembly cost quotation yet.
First batch of the TA3020 amplifier with on-board power supply is available already : Connexelectronic
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