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BA662 Clone with DC offset Trimmer

author: Altitude909
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2 layer board of 0.86 x 0.39 inches (21.9 x 9.8 mm)
Uploaded: June 19, 2015
Shared: June 19, 2015
Total Price: $1.65

Clone of the BA662 OTA use in old Roland Machines. I’ve added a trimmer and resistor to trim off the DC offset like on the SH-101 PCB. Interestingly enough, those parts were never populated on the SH-101 (probably cheaper to bin the parts for offset). This is the same mod that I documented for the x0xb0x..

http://misw.us/BA662a1.jpg http://misw.us/BA662a2.jpg http://misw.us/BA662a3.jpg

Original design by Open Music Labs

BOM

Clone of the BA662 OTA use in old Roland Machines. I’ve added a trimmer and resistor to trim off the DC offset like on the SH-101 PCB. Interestingly enough, those parts were never populated on the SH-101 (probably cheaper to bin the parts for offset). This is the same mod that I documented for the x0xb0x..

http://misw.us/BA662a1.jpg http://misw.us/BA662a2.jpg http://misw.us/BA662a3.jpg

Original design by Open Music Labs

BOM

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      Since this is a project designed by a community member, it may contain design errors that prevent it from working as intended. OSH Park cannot place any guarantees about the functionality or correctness of the design.
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