Single Supply Op Amp Amplifier Circuit. The op amp still has a total of 30v across the power supply terminals but in this case it comes from a single positive supply. So there is no difference in how we analyze a traditional dual power supply.
The mathematics of the op amp are independent of the power supply voltages. The output is capable of following the input as long as the input comes no closer than 2v from either supply terminal of the op amp. A single supply voltage is seldom used for real audio mixers.
A single supply voltage is seldom used for real audio mixers.
An inverting summing circuit figure 7 is the basis of an audio mixer. The mathematics of the op amp are independent of the power supply voltages. In a number of modern circuits it is convenient to use an op amp with a single power supply common voltages are 12 and 5. The lower power supply pin is connected to circuit ground.
