Definition: The electrical appliances are connected to the circuit in turn. Parallel circuit is one of the two basic ways to make the current between the circuit elements in parallel.
Features of parallel circuitParallel connection is to connect the two terminals of each element of two or more two-terminal circuit elements to a pair of common nodes, respectively, as shown in Figure 1, which shows the parallel connection of n two-terminal elements. They are all connected to a pair of common nodes, which are connected to other parts of the circuit.
The main characteristics of the parallel circuit are:
1. The terminal voltage of all parallel components is the same voltage, that is, V in the circuit shown in the figure.
2. The total current of the parallel circuit is the sum of the currents of all components. In the circuit shown in the figure, i is the total current, i1, i2, and i3 are the currents of elements 1, 2, and 3 respectively, i=i1+i2+i3.
Series circuitSeveral circuit elements are connected to each other along a single path, and each node is connected to only two elements at most. This type of connection is called series connection. A circuit connected in series is called a series circuit.
The current flowing through each resistor in the series circuit is equal. Because each section of the same branch in the DC circuit has the same current intensity.
The switch controls the entire circuit in any position, that is, its function has nothing to do with the position. There is only one path for current, and the current passing through one lamp must pass through the other lamp. If one lamp is extinguished, the other lamp must be extinguished.
Advantages: In one circuit, if you want to control all circuits, you can use a series circuit;
Disadvantages: As long as there is a disconnection, the entire circuit becomes a disconnection, that is, the electronic components connected in series cannot work normally;
Distinction: There is no branch (branch) in the series circuit.
Similarities in series and parallel circuits1. Regardless of whether it is a series circuit or a parallel circuit, the total electrical energy consumed by the circuit is equal to the sum of the electrical energy consumed by various electrical appliances. W=W1+W2.
2. Regardless of whether it is a series circuit or a parallel circuit, the total electrical power of the circuit is equal to the sum of the electrical power consumed by each electrical appliance. P=P1+P2.
3. The sum of the total electric heat generated by either the series circuit or the parallel circuit circuit and the electric heat generated by various electrical appliances. Q=Q1+Q2.
Laptop power adapter charger for Dell:
| Laptop Model | Adapter Output |
| Latitude E5400 E5410 E5500 E5510 | 19.5v 4.62a, 7450 |
| Studio XPS 16 (1645)1640 1645 1647 | 19.5v 4.62a, 7450 |
| Studio XPS M1645 M1647 | 19.5v 4.62a, 7450 |
| XPS 14 15 17 L501x L502x L702x L702x | 19.5v 4.62a, 7450 |
| Inspiron 1464 1564 1764 | 19.5v 4.62a, 7450 |
| Inspiron 1525 1440 1526 | 19.5v 3.34a, 7450 |
| Precision M4600 M6600 | 19.5v 6.7a, 7450 |
| Inspiron N5050 N4010 N5110 | 19.5v 3.34a, 7450 |
| Inspiron 14Z-N411Z 13Z N311Z | 19.5v 4.62a, 7450 |
| Inspiron 1545 | 19.5v 3.34a, 7450 |
| Latitude E5420 E5530 E5430 E6420 | 19.5v 4.62a, 7450 |
| Inspiron 1440 1525 1526 1545 1750 | 19.5v 3.34a, Octagon tip |
| Inspiron 1300 B120 B130 | 19v 3.16a/3.42, 5525 |
| Inspiron 1525 1526 1545 | 19.5v 3.34a, 7450 |
| Studio 1440 1440n 1440z 14z 14zn | 19.5v 3.34a, 7450 |
| Latitude E4300 E4310 | 19.5v 4.62a, 7450 |
| Inspiron 13Z 13ZD 13ZR M301 M301z M301ZD M301ZR N301 | 19.5v 3.34a, 7450 |
| Inspiron N301Z N301ZD N301ZR | 19.5v 3.34a, 7450 |
| Studio 1535 1536 1555 1557 1558 | 19.5v 4.62a, 7450 |
| Latitude E5420 E5520 E6430 E6530 E6420 E6520 | 19.5v 4.62a, 7450 |
| Inspiron Mini 10 10v 1010 1010n 1010v 1011 1011n 1011v | 19v 1.58a, 5517 |
| Inspiron 14V 14VR M4010 N4020 N4030 | 19.5v 4.62a, 7450 |
| Inspiron N4110 N5110 N7110 M5010 | 19.5v 3.34a, 7450 |
| 630M 640M E1405 | 19.5v 4.62a, 7450 |
| Inspiron 15-3521 17-3721 | 19.5v 3.34a, 7450 |
| Latitude 120L | 19.5v 3.34a, 7450 |
| Vostro 1710 1710n 1720 1720n | 19.5v 4.62a, 7450 |
| Vostro 1500 1700 Inspiron 1520 1521 1720 | 19.5v 4.62a, 7450 |
| Vostro 1400 1420 PP26L | 19.5v 3.34a, 7450 |
| Latitude D410 | 19.5v 3.34a, 7450 |
| Inspiron 1120, 1121, M101 | 19.5v 3.34a, 7450 |
| Inspiron Mini 1012 1018 | 19v 1.58a, 5517 |
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