We save a light bulb for lighting the refrigerator chamber. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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We save a light bulb for lighting the refrigerator chamber. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Lighting

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The light bulb used to illuminate the refrigerator chamber operates in a specific mode - in the cold. And as you know, a light bulb always burns out the moment it is turned on, since its filament in a cold state has low resistance. When turned on, an increased current flows through this filament, which destroys the light bulb filament.

In the refrigerator compartment, the light bulb is at a lower temperature than in the room. Therefore, the likelihood of light bulb failure is even greater.

I propose to power the light bulb through a diode. And although the light bulb blinks at a frequency of 50 Hz, this does not interfere. I installed this KD105 diode 2 years ago, and not a single light bulb has failed. Previously, light bulbs had to be changed frequently. Inserting the KD105 diode is very simple.

In the refrigerator, the light bulb is in a “minion” type socket, inside of which the KD105 diode fits quite well, since it is small in size. We proceed as follows. We remove the Minion cartridge, having previously disconnected it from the network, and place a diode in it. We first bite off the leads of the diode, leaving small tips for soldering wires to them. Having soldered the wires, we connect the diode into the gap of one supply wire in series with the light bulb.

We connect the supply wires. Next, we put the socket in place and screw in the light bulb. All is ready.

The KD105 diode can easily withstand the load, since the light bulb in the refrigerator has a power of only 15 W.

Author: V.O.Rashitov, Kiev.

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