Night illumination from an LED lamp with an electricity consumption of 1.3 rubles / month
Jan 06, 2021
IN this part I wrote about the effect that appears in some lamps (not in the most expensive version of the electronic part) if a switch with neon illumination is installed. The effect consists in the glow of the LED lighting lamp in the off position of the switch. All due to the fact that a current flows through the neon lamp and the resistor up to ~ 0.001-0.01 A, and it is enough that the lamp shone 5-10% of its power.
But not all lamps will glow like this. It will not work with most expensive ones and may start blinking after a while (off or under voltage).
Let's go back to our inexpensive lamps. A small current is enough for the lamp to glow in this mode due to the fact that there is no PWM generator in the lamp circuit or a resistor parallel to the supply capacitor inside the lamp. Here are the expanded responses from readers:
Someone gets in the way of this effect and he breaks the backlight power in the switch or puts a capacitor parallel to the lamp with characteristics of 0.01-0.05 μF 400-600 V. But there are those who like this mode of the night lamp illumination, as I do.
In the kitchen, such a lamp at 5% of the power shines for a long time at night. In terms of illumination, it resembles a full moon. I decided to install the same lamp at the entrance:
For comparison, the power is turned on and off. Lamps were purchased from Leroy of the following brand:
If someone wants to get this effect too, then get several types of inexpensive lamps. Those that will not have a backlight in conjunction with a switch with neon - hand it back (within 14 days) and get those that fit.
For inexpensive lamps, this mode is not terrible. For some readers, they work like this for years. And what is the consumption of the lamp in this mode? What are the monthly electricity costs? Consumption in this mode: ~0.8 W * h.If the lamp is turned off on average 20 hours a day, then 0.48 kWh will run over a month in this mode. A bit more RUB 1.3 per month (2.75 rubles / kW). TV and other consumer electronics in standby mode may consume more in total. And there are opinions that the electric meter does not react at all to such a leakage current.