cheap Negative 5v supply to drive a NJM2069
2015-12-20 by bperkins211@...
I would like to have a cheap, yet usable -5v supply to power the bipolar needs of a NJM2069 Filter IC chip.. the one inside Korg Poly 800.
I was looking at this on ebay.
Mini DC-DC Converter Adjustable Step down Power Supply Module replace LM2596s UL
I heard you can make that output Negative Voltage by connecting your V+ source supply to the V+IN and the source Gnd to the OUT+.
Then you can connect the needed Negative supply up by attaching it's Gnd to Out+ and it's V- to the Out-.
Not so sure about all this.. anyone else know if this is right or can be done?
It sure would be nice to have such a cheap and simple way to get the proper -5v supply to the NJM2069 Filter chip.
I'd like to play around with one as an external VCF on a breadboard and maybe hookup MIDI control to it with other circuitry too.
Thanks!
/Blaine
I was looking at this on ebay.
Mini DC-DC Converter Adjustable Step down Power Supply Module replace LM2596s UL
I heard you can make that output Negative Voltage by connecting your V+ source supply to the V+IN and the source Gnd to the OUT+.
Then you can connect the needed Negative supply up by attaching it's Gnd to Out+ and it's V- to the Out-.
Not so sure about all this.. anyone else know if this is right or can be done?
It sure would be nice to have such a cheap and simple way to get the proper -5v supply to the NJM2069 Filter chip.
I'd like to play around with one as an external VCF on a breadboard and maybe hookup MIDI control to it with other circuitry too.
Thanks!
/Blaine