The type of voltmeter provided in the design of the stabilizer, or rather, the type of scale used by this device. By itself, this
voltmeter allows you to monitor the voltage — usually both at the input and at the output — which makes it easier to monitor the operation of the stabilizer. For this, two separate scales are most often provided, but there are also "single" voltmeters, with a switch to select between input and output voltage. And according to the type of scales, there are such options:
— Analogue. Analogue voltmeters are equipped with a traditional type scale — with graduations and an arrow printed on it. They are simpler and cheaper than digital ones, but less accurate — even in the thinnest devices, the error of indications can be 5-10 V only because of the peculiarities of reading information from such a scale. And in some inexpensive models, analogue voltmeters play the role of general indicators rather than precision instruments. At the same time, for most everyday tasks, such accuracy is quite enough.
— 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 analogue one. Of the shortcomings, it is worth noting the complexity and rather high cost of digital pointers. In addition, such high accuracy can be critical in the professional field, but in every
...day life it is not always required. Accordingly, in low-cost low-power stabilizers, a digital voltmeter is often more of a marketing ploy than a real need.
