Elso, I just noticed I might make confusion. The drawing I referred to (in my posts #19 and #22) is in your post #12, not #13.
Pedja
Pedja
Those of you who have tried four parallel TDA1543 chips, have you soldered them on top of each other or kept them separate, each with their own decoupling cap?
I've soldered 2, 3 and 4 on top of each other.. seems to work OK, but they get very... very hot.. better use 5V supply and not the 8 or 9 volt you can sometimes see in a schematic..
Goodluck,
Thijs
Goodluck,
Thijs
Dear Friends
After 13 years, when the last post was happened in this topic, i hope, you are still here! 🙂
I'd like to try this simple active I/V with a Raspberry Pi I2S interface.
I'd like to ask, that is it necessary to put an output buffer stage to this I\V?
I also would like to implement some de-emphasis stage to play some cd rips, which encoded with 15/50us pre-emphasis. But i dont know the output impedance to simple attach a capacitor with a switched relay. (It would be easier with a buffer, but i would not to degrade the purity of this I\V)
I'am thinkin' to attach a PassDiy B1 buffer:
https://www.passdiy.com/project/preamplifiers/b1-buffer-preamp
What are your opinions?
Thank you in advance!
After 13 years, when the last post was happened in this topic, i hope, you are still here! 🙂
I'd like to try this simple active I/V with a Raspberry Pi I2S interface.
I'd like to ask, that is it necessary to put an output buffer stage to this I\V?
I also would like to implement some de-emphasis stage to play some cd rips, which encoded with 15/50us pre-emphasis. But i dont know the output impedance to simple attach a capacitor with a switched relay. (It would be easier with a buffer, but i would not to degrade the purity of this I\V)
I'am thinkin' to attach a PassDiy B1 buffer:
https://www.passdiy.com/project/preamplifiers/b1-buffer-preamp
What are your opinions?
Thank you in advance!
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