220v, how to connect two light rods in series?

220v, the main line is connected in series with two-stage lamp rods, the broken skin live wire is connected with the lamp live wire, and the main zero line is connected with the lamp zero line. At present, our general household lamps use a voltage of 220v, so yes means to connect two 220v lamps together and connect them in series.

Use the zero line of the light bulb * * *, the live wire enters the 1 terminal of 1 light bulb, the No.2 is connected to the 1 line of the second light bulb, and the No.2 line of 1 light bulb is connected to the zero line, that is, two lamps are connected in series.

main feature

When the switch is set to point A, the power supply will provide the load with the full voltage of 100V; When the switch is set to point B, the power supply will provide 75V, and the voltages at point C and point D will provide 50V and 25V respectively.

A circuit in which two points of a circuit are connected one by one by circuit elements is called a series circuit, and the relationship between the voltage of each bulb in the series circuit and the total voltage of the circuit is called the voltage law of series bulbs.

When the range of voltmeter can't meet the working needs, a voltage divider can be connected in series to expand the range.

Current limiting resistors are connected in series to protect the arc lamp. In addition, the starting current when the motor is started is many times larger than that during normal operation. In order to limit the starting current, the motor is usually started by series resistors, which can be connected in series.