Comparison Philips CorePro LEDbulb A60 10W 4000K E27 vs Philips Essential MR16 4.2W 6500K GU5.3

The base is the part of the lamp that is fixed in the socket and functions both as a mount and as a contact system for connecting electricity. For normal operation, the socket (or other mount) in the lamp must match the base of the lamp. The options used today include, in particular:

— E27 (regular). Standard "Edison" base with a size of 27 mm, used for 230 V lamps in Europe and the CIS countries. If you are looking for a light bulb for a regular home chandelier, floor lamp or socket on the wall (for example, in the bathroom), you will most likely need this type of base. It is also used by many small lamps - table lamps, sconces, etc.

— E14 (minion). A smaller version of the Edison base compared to the popular E27, with a size of 14 mm. It is found much less often, mainly in minion-type lamps, which are distinguished by their small size and elongated bulb. Such lamps are intended for lamps where the use of full-size versions for E27 is impossible or unjustified — in particular, miniature sconces and relatively small chandeliers.

— E40. The largest of the "Edison" bases used in modern lamps, with a size of 40 mm. Used in high-power models, with an LON analogue (see below) of the order of several hundred watts.

— G4. All G-type sockets have two contacts in the form of characteristic pins and diffe...r in the size of the contacts and the distance between them. In this version, these figures are 0.65-0.75 mm (up to 1.05 mm in some modifications) and 4 mm, respectively.

— GU4. A two-pin base with a 4 mm pin spacing, used primarily in MR11 form factor lamps. These are small lamps with a standard size of 35 mm, usually LED, designed for low voltage — most often 12 V. They are mainly used for spot decorative lighting.

— G5. Standard base for tubular fluorescent lamps. The distance between the pins is 5 mm.

— G5.3. Two-pin base with a distance between contacts of about 5.3 mm and a contact thickness of 1.5 – 1.7 mm. Can be used in lamps of various types and designs, but usually these are 230 V models.

— GU5.3. Two-pin base with standard contact size of 1.4-1.6 mm and distance between them of 5.33 mm.

— G6.35. A two-pin base with a pin spacing of 6.35 mm. Found primarily in halogen lamps.

— GY6.35. Two-pin base with a distance between contacts of 6.35 mm and a pin thickness of 1.2 – 1.3 mm. It is used mainly among halogen lamps, including those with switchable power and voltage, and is found in spot and landscape lighting systems.

— G8.5. A base with two pins that are spaced 8.5 mm apart. Relatively rare, mostly found among metal halide lamps.

— GX8.5. This base is usually used in metal halide lamps for built-in luminaires. Structurally, it is assumed to have a round protrusion and two contacts on the sides. When installed in the socket, the contacts are fixed by turning the lamp.

— G9. Two-pin base with standard 9mm contact spacing.

— GU10. Two-pin base with a standard distance between contacts of 10 mm. Has thickenings on the ends of the pins, designed for fixation in the socket by turning.

— G10q. A specific type of base used in fluorescent lamps that have a ring shape. Incompatible with the original G10.

— G13. Two-pin base with standard contact size of 2.35 mm and distance between them of 13 mm, standard option for most household fluorescent lamps.

— G22. Two-pin base with a distance between contacts of 22 mm. Despite the “closeness” to G23 (see below), it differs significantly from it both in design and in application — it is used mainly in halogen lamps.

— G23. A two-pin base with a standard contact size of 2 mm and a distance between them of 23 mm. It is used mainly in fluorescent lamps with tubes in the shape of an elongated letter U; such models are used in table lamps, as well as some types of wall lamps.

— G24. Slightly larger in size than G23 (see above), the G24 base is used in noticeably larger and, accordingly, more powerful lamps: for example, fluorescent models with such contacts usually have a pair of U-shaped tubes installed in parallel. The main area of application of such lamps are wall and ceiling lights, including industrial ones. Lamps with the G24 base are available in versions G24d-1, G24d-2, G24d-3(with 2-pin contacts) and G24q-1, G24q-2, G24q-3(with 4-pin contacts). They differ from each other in the location and shape of the base.

— G53. The distinctive feature of the G53 base is the use of flat plates instead of pins, as well as the presence of two screws (one per plate) that act as terminals for connecting wires. Such lamps are used, in particular, as built-in lamps; most of them are LED.

— GX24. A base with a characteristic rectangular protrusion and two pairs of contacts located diagonally from this protrusion at a distance of 24 mm. It is used in compact fluorescent lamps (usually with a U-shaped bulb) that do not have a ballast (starting device). There are several versions of this base: GX24q-2, GX24q-3, GX24q-4. The differences between them are in the base format.

— GX53. A base with a round protrusion and two contacts on either side of it. The contacts have thickenings for fixation in the shaped cutouts of the socket by turning the turn (similar to G10). Lamps with this type of base have a flat shape and are designed primarily for installation in stretch and suspended ceilings.

— GX70. The base is similar to the GX53 described above, but differs in the increased distance between the contacts.

— R7s. A socket with a so-called recessed contact: the design includes a recess into which a special pin installed in the socket enters when installing the lamp. Often found in high-power halogen lamps with characteristic elongated bulbs, but can also be used in other types - in particular, fluorescent.

— RX7s. This base has the form of a flat rod with two contacts, one of which is recessed. The RX7s base is found in high-pressure gas discharge lamps.

— 2G7. Four-pin base, used similarly to the G23 described above — in compact fluorescent lamps with U-shaped bulbs. The difference between such lamps and models with G23, in addition to the number and shape of contacts, also lies in some operating features (in particular, they can be used with electronic ballasts, and there is no starter in the design).

— 2G11. A four-pin base consisting of two pairs of contacts, the distance between which in each pair is 11 mm; in fact, a combination of two G-type bases (paired). Rarely used, mainly in compact energy-saving lamps.

— 2GX13. A specialized base designed for ring-shaped fluorescent lamps. It differs from G10q, which has a similar purpose, not only in the shape and size of the contacts, but also in their placement — two pins are located on the outside of the ring, two — on the inside.

— B15d. Another type of bayonet cap, similar to the B22 described above, but with smaller dimensions. Also known as SBC — “Small Bayonet Cap”, that is, “small bayonet cap” (as opposed to the “large” B22 and its varieties).

— B22. A round base with a size of 22 mm, similar to the E-type mounts (see above), but without a thread — instead, two pins are used, which are fixed in the socket cutouts during installation of the lamp using the so-called bayonet method. In addition to the fact that such a mount is quicker to connect and disconnect than a threaded one, it has another important advantage — the ability to withstand constant vibrations without loosening. Due to this, B22 has found application, in particular, among luminaires installed in transport.

Operating voltage of the light bulb.

— 230 V. Standard voltage of household electrical networks in the CIS.

— 12 V. This operating voltage is typical for small lamps that are used in special lighting systems — spotlights, suspended ceilings, built-in systems, etc.

The power consumed by the light bulb during normal operation. The lower this indicator, the more economical the model and the cheaper it will cost to operate. In traditional incandescent lamps, the brightness of the glow also depended on the power, however, different types of lamps are presented on the modern market, with different efficiencies. Therefore, it is possible to uniquely link the power consumption and brightness only in lamps of the same type (see above), and to compare different types of models, you need to use the LON analogue (see below).

A parameter that describes the brightness of the lamp compared to a general purpose lamp (LON — a conventional incandescent bulb). Simply put, an analogue of LON is the power of an incandescent lamp, which is equal in brightness to the model in question. For example, a 75W LON analogue means that the lamp glows as brightly as a 75W incandescent lamp.

This parameter appeared for the convenience of evaluating and comparing different types of lamps in terms of brightness. Data on the luminous flux say little to the average user, and it makes no sense at all to evaluate the brightness by power — different types and even different models of lamps of the same type can differ markedly in efficiency. On the other hand, many users are accustomed to dealing with incandescent lamps, and comparison with such a lamp is familiar and understandable to them. In addition, the LON analogue allows you to compare different types of lamps, and it can also be very convenient when replacing incandescent lamps with more economical ones: for example, if 100-watt lamps were used in the chandelier, then the new lamps must have an LON analogue of at least 100 W — otherwise they may be too dim.

The conditional "amount of light" produced by a light bulb in normal mode. The higher the luminous flux, the brighter the light and the more clearly the illuminated scene will be visible. Note that lumen values are used primarily for special purposes; in everyday life, the estimation of brightness by the analogue of LON is more popular (see above), and here the ratio is as follows:

— 40 W analogue LON corresponds to a brightness of 370 lm;
— 60 W — 550 lm;
— 75 W — 800 lm;
— 100 W — 1200 lm;
— 150 W — 1900 lm;
— 200 W — 2700 lm.

Note that the principle "the more the better" in the case of the brightness of light bulbs is not always applicable. And the point here is not only energy consumption: too bright light is harmful to the eyes, leads to rapid fatigue and psychological discomfort.

This parameter describes the general coloration of the light of the lamp in "warm" or "cold" tones.

Initially, colour temperature is the temperature (in kelvins) of an object at which it begins to glow in a certain colour. Interestingly, the higher its value, the more “cold” the colour is: for example, the dull red glow of a heated metal corresponds to 800-1000 K, and the bluish-white tint of a fluorescent lamp corresponds to about 6000 K.

The temperatures encountered in modern light bulbs can be described approximately as follows:

2700 – 3000 K — "warm" white light, similar to traditional incandescent lamps;
3000 – 3500 K — "slightly warmer than average";
3500 – 6000 K — neutral white, similar to daylight;
More than 6000 K — cold shades of white.

Note that the colour temperature is not directly related to the quality of colour reproduction provided by the light of a particular lamp — much depends on the features of its design and, accordingly, the spectral colour balance.

The angle of light dispersion is the space in front of the light bulb, which is illuminated by the source itself, and not by the light reflected from the walls and interior items. In other words, the angle of light scattering determines the zone of the best illumination. Classic incandescent bulbs demonstrate the widest dispersion angle — they shine almost 360˚. LED spotlights have the smallest illumination angle, which are able to illuminate well only the area directly under the bulb — the scattering angle in such cases is about 15˚. Of course, a large angle of light scattering is not always needed. Working in the evening at the table, you need light only in front of you, so as not to disturb anyone. For spotlights that light up only small objects in front of them (a painting, sculpture, bas-relief, etc.), the scattering angle can even be from 4 °. As for the top (general) lighting, in this case it is better to choose something with a wider dispersion angle. These bulbs provide extremely uniform illumination.

This function is indicated for lamps with a beam angle of less than 180° — in other words, the luminous flux is directed in a certain direction, usually opposite from the base. One of the varieties of such lamps is models equipped with reflectors; however, the presence of a reflector is not mandatory, there may be other options (for example, a set of LEDs on a flat substrate).

The main application of directional lamps is obvious — situations when there is no need to shine "on the sides", if not even desirable. In particular, they are well suited for luminaires "recessed" into the ceiling or walls. When choosing, note that the scattering angle can be different.

The service life of the light source claimed by the manufacturer is implied, during which the illuminator is able to generate the claimed brightness and temperature colour spectrum. It is believed that light-emitting diode (LED) bulbs have the longest service life — their working life can be 10,000 — 50,000 hours ( 50 years of operation), depending on the modification of the bulb. But this parameter cannot be regarded as a guarantee, since a lamp with an operating time of 25 years can work less, and maybe even more, than a lamp with a "life" of 30 or even 35 years. In second place are energy-saving fluorescent light bulbs that are capable of generating daylight — the service life of such is in the range of 2000 — 20,000 hours. The average service life of halogen bulbs is about 2000 — 4000 hours, but when the power supply is equipped with a soft start device, it can be almost doubled. In last place are classic incandescent bulbs, the service life of which is within 1000 hours.