Figure 3. Block diagram of regulated power supply.
The output of a block labeled reference goes to one input of a block labeled comparison device. The output of the comparison device goes to the input of a block labeled amplifier. The output of the amplifier goes to the input of a block labeled controller. The output of the controller goes to the other input of the comparison device. The output of the controller is also the output of the power supply. This completes the verbal description.
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