AD584 voltage reference 2.5V/5V/7.5V/10V high-precision reference voltage source voltmeter correction
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Here is how to calibrate low-cost multimeters. This is very simple and only takes about 10 minutes with the right equipment.

In this video we’ll talk about a simple and cheap way of calibrating our measurement devices – whether multimeters, voltmeters, ammeters or ohmmeters. Of course, we’re talking about those cheap or medium priced ones, not those expensive, high quality ones, that tipically come already calibrated (such as Fluke, Agilent, etc.).

In this video we’ll talk about a simple and cheap way of calibrating our measurement devices – whether multimeters, voltmeters, ammeters or ohmmeters. Of course, we’re talking about those cheap or medium priced ones, not those expensive, high quality ones, that tipically come already calibrated (such as Fluke, Agilent, etc.).

Where i live, the cost of producing this device was around 25 $ / 20 euro.

Electronic schematic for voltage reference – 6:38
How to create our fixed precise resistors – 24:35
Ammeter calibration procedure – 40:43
Calibrating my own multimeters – 43:44
Final thoughts – 45:10

Project files can be downloaded from here:
https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbHFVcUNVZm5ZbWZjekdGdXAtR0tTSDNWT0thZ3xBQ3Jtc0trc3V6WE85dG54alJ1empKcE5BYjhEQXhmc25PVmRXZ01US3IzS1hmSC1ZZEhibFBCS3lxTEwzaGJzM3phakE0X3BNMWZPQnl0Y3pkbjIzZVBya3ZnZnZ5OTB5NTEzMEp6eXBQV045Qm4tZ3R0a3J5WQ&q=https%3A%2F%2Flectiivideo.ro%2Fmateriale%2Felectronica_aparat_calibrare.zip&v=3ON-5hnv2_k

A viewer requested that I use my multimeters to measure voltage less than 5V. Here’s a measurement of 2.5V from two voltage references

Review and teardown of 3 types of Precision Voltage Reference Modules which are useful for checking the calibration of Digital Multimeters.