The type of voltmeter provided in the stabilizer design, or rather the type of scale used by this device. This
voltmeter itself allows you to monitor the voltage - usually both at the input and at the output - which makes it easier to control the stabilizer's operation. For this purpose, two separate scales are most often provided, but there are also "single" voltmeters, with a switch to select between input and output voltage. And by scale type, there are the following options:
— Analog. Analog voltmeters are equipped with a traditional scale — with divisions and an arrow applied to it. They are simpler and cheaper than digital ones, but less accurate — even in the thinnest devices, the error in indications can be 5-10 V only due to the peculiarities of reading information from such a scale. And in some inexpensive models, analog voltmeters play the role of general indicators rather than precision devices. At the same time, for most everyday tasks, such accuracy is quite sufficient.
— Digital. In such voltmeters, the role of the scale is played by a digital indicator, on which voltage values can be displayed with an accuracy of up to a volt — this is the main advantage of this option over the analog one. Among the disadvantages, it is worth noting the complexity and rather high cost of digital indicators. In addition, such high accuracy can be critical in the professional sphere, but in everyday life it is not always
...required. Accordingly, in inexpensive low-power stabilizers, a digital voltmeter is often more of a marketing ploy than a real necessity.
