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Virtual ground - Wikipedia
https://en.wikipedia.org/wiki/Virtual_ground#:~:text=An%20active%20virtual%20ground%20circuit%20is%20sometimes%20called,to%20zero%20when%20a%20feedback%20network%20is%20implemented.
Virtual Ground Circuits - Tangentsoft
https://tangentsoft.net/elec/vgrounds.html
The above buffered virtual ground circuits have one of two major problems. The TLE2426 and VFB op-amp based circuits have fairly low output current abilities. The other circuits have higher output current, but most lack feedback so their output impedance is relatively high; this can result in problems like increased crosstalk in a headphone amplifier.
Virtual Ground Circuits from Voltage Regulators
https://goldpt.com/virtual_ground_circuit.html
If you are using the virtual ground with an audio circuit and your DC power supply has an AC source, adding another voltage regulator in front of the rail splitter section can further improve sound quality. An LD1085V, 3A LDO (Low Dropout Voltage) voltage regulator sounds better for this purpose than others I've compared by listening tests. When using this additional voltage …
How do We Create a Virtual Ground? - circuit-fantasia.com
https://www.circuit-fantasia.com/circuit_stories/inventing_circuits/virtual_ground/virtual_ground.htm
Virtual ground is not only a "mystic" electronics phenomenon that we can observe only in op-amp circuits with parallel negative feedback (op-amp inverting circuits). It is a unique worldly phenomenon that we can observe in many situations of our human routine where we solve problems in a wasteful and extravagant way - by continuous wasting of additional energy .
An audio circuit collection, Part 1 - TI.com
https://www.ti.com/lit/an/slyt155/slyt155.pdf
A single-supply circuit connects the op amp power pins to a positive voltage and ground. The positive voltage is connected to VCC+, and ground is connected to VCC– or GND. A virtual ground, halfway between the positive sup-ply voltage and ground, is the “ground” reference for the input and output voltages. Voltage swings above and below
Virtual ground - circuit-diagramz.com
https://circuit-diagramz.com/virtual-ground/
Virtual ground: Often only a single power supply is available for an opamp circuit. Since such circuits normally require a double supply, this means that in some way the available supply has to be converted. This is normally done by a potential divider and capacitor across the single supply. sometimes followed by an ancillary opamp.
What is Virtual Ground in Opamp - electroSome
https://electrosome.com/virtual-ground-opamp/
In the above circuit V1 is connected to ground, so V1 = 0. Thus V2 also will be at ground potential. V2 = 0; Virtual Ground – Inverting Amplifier using Opamp Why we need Virtual Ground ? Virtual Ground concept is very useful in analysis of an opamp when negative feedback is employed. It will simply a lot of calculations and derivations.
Virtual Ground (regulated!) - and Rail Splitter Circuits ...
https://www.head-fi.org/threads/virtual-ground-regulated-and-rail-splitter-circuits.654485/
If you are using the virtual ground with an audio circuit and your DC power supply has an AC source, adding another voltage regulator in front of the rail splitter section can further improve sound quality. An LD1085V, 3A LDO (Low Dropout Voltage) voltage regulator sounds better for this purpose than others I've compared by listening tests.
Virtual Grounds & Rail Splitting - Tube CAD
https://www.tubecad.com/2018/02/blog0412.htm
Making a rail-splitting virtual ground out of a diamond circuit is easy enough: The only problem with this arrangement is that the virtual ground voltage will shift up and down with the varying sustained current flow through the 1-ohm emitter resistors. This may not prove a deal breaker, depending on the application.
A Single-Supply Op-Amp Circuit Collection
http://www.add.ece.ufl.edu/4924/docs/TI_SingleSupply.pdf
or GND. A virtual ground, halfway between the positive supply voltage and ground, is the reference for the input and output voltages. The voltage swings above and below this virtual ground to the limit of V OM±. Some newer op amps have different high- and low-voltage rails, which are specified in data sheets as V OH and V OL, respectively. It is important to note that there
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