We have to place thisDC ammeterin series with the branch of an electric circuit, where the DC current is to be measured. The voltage across the elements, which are connected in parallel is same. So, the voltage across shunt resistor,RshRshand the voltage across galvanometer resistance,RmRmis...
Digital ammeters are connected in series with a circuit (and never parallel) so that current flow passes through the meter. High current flow may indicate a short circuit, unintentional ground, or defective component. Low current flow may indicate high resistance or poor current flow within the ...
A parallel connection is used because objects in parallel experience the same potential difference. (See Figure 2, where the voltmeter is represented by the symbol V.) Ammeters are connected in series with whatever device’s current is to be measured. A series connection is used because objects...
or of a simple circuit without any active power sources. A simple ohmmeter consists of a battery, an ammeter, and a safety resistance R s , all connected in series with the resistance being measured: V R s A R X The ammeter here itself consists of a galvanometer and a shunt resistor....
When a sensitive meter movement needs to be re-ranged to function as an ACvoltmeter, series-connected “multiplier” resistors and/or resistive voltage dividers may be employed just as in DC meter design: (Figure below) Multiplier resistor (a) or resistive divider (b) scales the range of the...
In extremely severe cases, the use of RF chokes in series with each side of the line may also be required. THE SENSING TERMINALS MUST BE CONNECTED to the output terminals, either on the panel of the Redundant Power Package or at the load. Failure to have the sense terminals connected ...
被引量: 0发表: 1960年 True-RMS AC ammeters Murata has introduced a series of digital AC ammeters with alarm for measuring and displaying complex, true-RMS, non-sinusoidal AC circuits.\nThe Datel ACA... - 《Whats New in Electronics》 被引量: 0发表: 2009年 加载更多站...
A high resistance winding upon a spool x, disposed below the main spool c, may be connected in series with the voltmeter winding at the end leading to a terminal j. The alternative circuits may be connected for their respective purposes by means of a two-way switch. The spool c is ...
In Figure 3 is shown a radio transmitter 22 with its antenna'20 connected in series with terminals 17. As a means for reducing the skin effect error of the meter within its operating range, condenser 21 is placed in shunt with said terminals. In order to reduce the size of the case 10...
Assuming that the moving coil 25 is connected in series with a fixed resistance and a source of direct current and that the electromagnetic circuit is not energised it will be appreciated that under these conditions the deflection of the coil will be affected by the voltage of the source, and...