DPA-222 - The Bipolar Power Amplifier
Click on the picture to get a larger view.
Click on the picture to get a larger view.
DPA222SE-Material_Eng.sxc OpenOffice file
This is a power amp with bipolar transistors as output devices.
Some technical data:
120 W / 4, 70 W / 8
SNR more than 118 dB
fr. 20 - 200 kHz,
dist. below 0,01 %
SR more than 50 V / microsec.
DPA-380 - The MOSFET Power Amplifier
Click on the picture to get a larger view.
Click on the picture to get a larger view.
This is a power amp with MOSFET's transistors as output devices. The pdf's are only in czech but I'll hope you can make something out of it.
Some technical data:
200 W / 4, 130 W / 8
SNR more than 124 dB
fr. 20 - 200 kHz,
dist. 0,002 %
DPA-386 - The MOSFET Power Amplifier
DPA386SE.pdf Schematis and pcb layout
DPA386-Material_Eng.sxc OpenOffice file
ACTIDAMP - The Czech Phono Amplifier
This article is in czech but I'll hope you can make something out of it.
SOFTSTART - The Czech way
Click on the picture to get a larger view.
My homepage is here
Feel free to come with comments.
Pavel Dudek
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