DPA-222 - The Bipolar Power Amplifier

Click on the picture to get a larger view.

Click on the picture to get a larger view.

DPA-222.pdf

DPA222SE-Material_Eng.pdf

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.

{mospagebreaktitle=DPA-380 - The MOSFET Power Amplifier}

DPA-380 - The MOSFET Power Amplifier

Click on the picture to get a larger view.

Click on the picture to get a larger view.

DPA380_2.pdf

DPA380_1.pdf

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 %

{mospagebreak title=DPA-386 - The MOSFET Power Amplifier}

DPA-386 - The MOSFET Power Amplifier

DPA386SE.pdf Schematis and pcb layout

DPA386-Material_Eng.sxc OpenOffice file

{mospagebreak title=ACTIDAMP - The Czech Phono Amplifier}

ACTIDAMP - The Czech Phono Amplifier

ad4.pdf

This article is in czech but I'll hope you can make something out of it.

{mospagebreak title=SOFTSTART - The Czech way}

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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