Parallel circuits continue to light other bulbs when one or more are not functioning.
parallel
An example of a kind of short circuit is an arc welding.
depending at the kind and high at the voltage, or/and the high of the power
It kinda depends on what kind of bulb incandescent lights use filaments and emit heat, for example
If a circuit has no switch then it remains 'on' permanently. If you desire to open or close a circuit, for turning on or turning off a light for example, you need some kind of switch.
If we're talking about in-circuit diagnostics and measurements with the device powered on (like it oftentimes is with TV sets, or at least used to be), the light bulb serves a dual purpose:a) the bulb acts as a huge resistor capable of dissipating (as light) great quantities of power (unlike typical resistors which go up to say, 7W, a light bulb could be even 100W) - thereby protecting critical components from burningb) the second purpose is to be a kind of warning: in most typical devices, inrush current notwithstanding, the power consumption will be such that the bulb will not light up to its full brightness. If it does, it is usually indicative of a short circuit in the device (most likely in the power supply circuit, or the primary HV circuit such as those of CRT TVs)If we're, however, talking about ANY light bulb, even a LED light, typically included in the design, then its inclusion in the circuit is indicative: it simply informs the user that the device has power applied to it, and serves as a cautionary sign.
a parallel circuit
the electrical circuit, load, conductor, open circuit, switch,
The bulb "pulses" because the circuit is not completely off. If the CF bulb is pulsing or flashing, it means that there is some kind of feedback loop providing at least some voltage to the bulb. Often lighted switches use the filament resistance to provide voltage to the internal bulb. Get rid of the lighted switch.
series and parallel circuit :)Series CircuitsSome strands of Christmas lights use a series circuit, also known as a closed circuit. The current goes to each bulb in order, without going in any other direction. All components of the strand of lights work in a path. If one bulb burns out, or one bulb is taken out of the strand, no charge will move through the circuit. The strand will stay off because the series has been interrupted, and the path broken.Parallel CircuitsThe other type of Christmas light strands uses a parallel circuit. This is a closed electrical circuit where the current is wired in parallel, like rungs on a ladder. The current is divided into at least two different paths. Energy flows only through a common path to complete the circuit. In the case of Christmas lights, this means that there is more than one current going to the bulbs. If one burns out, the others will still lighted because the the current going to each one is separate.
Any complete circuit. ==== An electrical circuit.
Parallel
Closed circuit