How to more accurately measure the mains voltage with an analog voltmeter?

Question

Electronics

I know that there is such a way for direct current. The voltage measurement takes place in a bridge circuit.

In this case, the analog voltmeter shows a voltage difference equal to Upit - Uzener diode.
It seems that zener diodes can be connected in series to increase Ustab, but a garland of zener diodes somehow does not inspire.
I would like to observe changes in the mains voltage ...
What other options are there?

Answer 1

What you want is called "stretched scale voltmeter". That's exactly what they do, on zener diodes. If you need to measure alternating voltage, put a rectifier in front of all this economy. For high voltages, firstly, you need to recalculate the additional resistors, and secondly, take a zener diode with a higher voltage. They are up to 200V.
Here is a diagram for the mains voltage: www.qrx.ru/izm/v_rs.htm
Upd.: The scale is non-linear, and the zener diodes are all different, the device must be calibrated.

Answer 2

by "mains voltage" one must understand an alternating voltage of 220V from an outlet and there is a rectifier not shown here, then yes.
zener diode hang in a chain their voltages will add up. The rest of the scheme is correctly calculated, but there is not enough information here