Week 7

Title of Activity
-Continue on doing the literature review, a research about previous project.

Objective
- To find a similar project and do some research on it.

Content/Procedure
-Information about the previous project.
-Some of the book that use in this research.

Result/Analysis
 -As a result, a modern electrometers based on vacuum tube or solid-state technology can be used to make voltage and charge measurements with very low leakage currents, down to 1 femto ampere.

-An electrometer is a highly sensitive electronic voltmeter whose input impedance is so high that the current flowing into it can be considered to be zero .
-Electrometers are used in nuclear physics as they are able to measure the tiny charges left in matter by the passage of ionizing radiation.

Modern Electrometers

Conclusions
 As a conclusions, the research found out about the electrometer. Although its not the same with the talking voltmeter but its similar to from voltmeter aspect, its also can measured a voltage but its has a specialty, it can measured a voltage at very low leakage and also use in nuclear physics .

Week 6

Title of Activity
-Do the literature review, a research about previous project.

Objective
- To find a similar project and do some research on it.

Content/Procedure
-Information about the previous project.

Result/Analysis
 -As a result, a voltmeter is usually combined with an ammeter, instrument used to measure the magnitude of an electric current of several amperes or more. An ammeter is usually combined with a voltmeter and an ohmmeter in a multipurpose instrument and an ohmmeter is an instrument used to measure the electrical resistance of a conductor. It is usually included in a single package with a voltmeter.
-Most voltmeters are based on the D’Arsonval galvanometer.
-All galvanometers are based upon the discovery by Hans C and are of the analog type example they give voltage readings that can vary over a continuous range as indicated by a scale and pointer.
-Rather than using a D’Arsonval movement or digital electronics, the solenoid voltmeter simply uses a spring-loaded solenoid carrying a pointer.

-Solenoid voltmeters usually have a scale on each side of the pointer, one is calibrated for alternating current and one is calibrated for direct current. Only one “range” is provided and it usually extends from zero to about 600 volts.



Conclusions
 As a conclusions, the research found out about the solenoid voltmeter. Although its not the same with the talking voltmeter but its similar to from voltmeter aspect, its also can measured a voltage.