Adjustable voltage stabilizing circuit
Source: InternetPublisher:国民男神经 Keywords: Voltage stabilizing circuit power supply grounding Updated: 2020/01/15
In order to reduce the impact of changes in d on the voltage stabilization accuracy and make it
more flexible, an operational amplifier can be used to form a continuously adjustable voltage stabilizing circuit
. As shown in Figure 7-190, the remote amplifier - small 1 is used as a voltage follower. The positive power supply
of the remote amplifier relies on the input voltage Vi of the voltage stabilizing circuit , and the negative power supply
terminal is connected to the ground . Since the remote amplifier has extremely high input impedance and extremely low output
impedance, the input current is approximately 0, so the current
flowing through the IOkfl potentiometer will not change due to changes in Id, which greatly improves voltage regulation.
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