Implement2
From Wikiversity - Reading time: 2 min
Problem Statement
[edit | edit source]- Figure out how many ohm resistor for voltmeter.
- Figure out the shunt resistor.
- How to parallel shunt resistor with voltmeter.
- Test the converted ammeter.
Lists, Source, Cost, Consumable
[edit | edit source]- One voltmeter, one 3amp power supply, one 0.3 ohm, one 1 ohm resistor, two 10k resistors, one bread board, three alligator jumpers, two wires.
- These sources are from School supply.
Designing the Implementation Process
[edit | edit source]The initial design
[edit | edit source]- Found this useful pdf file Conversion of voltmeter to ammeter
- Replaced 1M voltmeter's resistor with 1 ohm resistor.
- Tested the converted ammeter, the needle flip to another side of voltmeter.
- Because the voltmeter's resistor is too small, and the voltmeter is in series connection.
-
Testing converted ammeter
- The current overloaded will cause meter broken.
Final Design
[edit | edit source]- Keep following this pdf file Conversion of voltmeter to ammeter
- Replace 1k resistor with 10k resistor.
- Connect 0.3ohm power resistor in parallel with 2 poles of voltmeter on the back.
-
Converted ammeter
- Connect another 10k resistor in series with converted ammeter.
- Connect the alligator jumpers with 3amp power supply, then turn on.
Work flow
[edit | edit source]- solder 1k resistor off.
-
solder off this resistor
- Solder 10k resistor on.
-
1k resistor
- Make 2 wires.
-
cut a piece of wire -
pull 2 wires out -
get 2 wires
- Solder 2 wires with 0.3ohm power resistor.
-
2 wires connect to 0.3 power resistor -
2 wires connect to 0.3 power resistor -
2 wires connect to 0.3 power resistor -
2 wires connect to 0.3 power resistor
- Connect 0.3ohm power resistor to voltmeter.
-
convert voltmeter to ammeter
-
convert voltmeter to ammeter
- Connect converted ammeter to the circuit.
-
connect meter to the circuit.
- Here is my youtube video test converted ammeter
- Turn on the 3amp power supply.
Hardware/software function and safety
[edit | edit source]- The resistor may get burn up and melt when test a couple times.
- Keep alert. When smell something burning check around.
- This resistor get burn and melt.
-
resistor get burn up
Test and analysis procedures (hardware vs. software, acceptance vs. qualification)
[edit | edit source]- Turn on the 3amp power supply. If the needle flip to the middle, the converted ammeter is working.
Poster
[edit | edit source]Next Steps
[edit | edit source]- Get a new voltmeter.
- Follow the Work Flow.
Licensed under CC BY-SA 3.0 | Source: https://en.wikiversity.org/wiki/Implement225 views | ↧ Download this article as ZWI file
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