DIY dc two wire voltage meter convert into three wires at home. Worked well
Тәжірибелік нұсқаулар және стиль
DC voltmeter is a measuring instrument, which is used to measure the DC voltage across any two points of electric circuit. If we place a resistor in series with the Permanent Magnet Moving Coil (PMMC) galvanometer, then the entire combination together acts as DC voltmeter.
Unlike our AD448 two wire voltmeter, this meter has a third wire for the measured voltage allowing for a greater range of measurement. Just connect the red to wire positive and black wire to negative to power the meter and then connect the yellow wire to the power source you want to measure, that's it!
Пікірлер: 9
The Yellow wire should turn it on
Zabardast
Great
Why does it not turn off
Can we use any resistor to safe the device for unexpected higher voltages?
@experienceofdecade4099
Жыл бұрын
Yes you can use
@VGR176
Жыл бұрын
@@experienceofdecade4099 can you let me know how much ohm resistor can i use for this?
@SAI_LINGESH
Жыл бұрын
@@VGR176 what ohm did you use?
@nickfatsis9607
Жыл бұрын
@@VGR176 you could look up Ohms law, this will tell you exactly which value resistor to use.