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4 juin 2019 2 04 /06 /juin /2019 18:26
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S
I think that FET Drain-Source pin are reversed on the schematic of 4023 Filter, but thanks for theses ! ;)
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C
Yes I see, you are absolutely right. But reversing the Drain and Source is not important in the case of a FET
J
Thanks a lot for the information, schematics and pictures!
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D
Hello,<br /> I am rebuilding my Arp 4034 filter and came across your modified schematic. I was wondering why you removed R28 and connected C3 to ground? What effect does this have on the filter?<br /> Thank You.
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C
I based it on an original module and corrected the error on the schematics
J
Hi, as far as I know the modified schematic represents the earlier revision of the 4034 filter. I believe R28 was added and C3 reconnected in later versions in order to avoid transient currents at power up/down. As you may know, the +/-15V supplies typically fluctuate heavily for a short while when switching the synth on or off.
N
Hello. The 4019 files repeat the 4015 ones.
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D
Your files for the 4019 VCA are wrong. They are all the previous 4015 S&H files
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C
Thanks it's replace