Silva Alpha LED - old but wise? | Happymtb.org
LED development is in full swing and old technology quickly becomes outdated. Silva's lamp icon latest LED headlamp was introduced in spring 2009. Since then, LEDs have become more powerful, energy-efficient and less expensive. Can Silva Alpha with its intelligent lens system to compensate for old technology? We have tested. lamp icon
LED is hot. Everywhere and in all devices will now be LEDs. The uses seem limitless, ranging from energy-saving lighting in the home, yet flatter flat-screen TVs and front lights with its own identity within the automotive industry. The rapid development drives and gives us consumers constantly powerful LED with lower energy consumption and costs less than its predecessors.
Silva is a familiar brand to many dark cyclists. The old faithful servants halogen lamps 478 and 480 adorn the helmets of many of those who love to take a ride after dark. With the new Alpha wants Silva to seriously take the step into the increasingly popular and growing LED world.
Alpha comes in a large bag. With its contoured Silva Logo feels lavish purse and gives a solid impression. Internally, each part has its own place in the cut foam interior. Silva Alpha 6 supplied with lamp, extension cord, helmet mount, bike mount, head position, battery, charger and Swedish manual
In the cast lamp housing houses three LEDs and electronics to these. The diodes are three identical Luxeon K2. An elderly diode today aside. A quick look in the datasheet gives the effect of a Luxeon K2 is 5 watts and light output 160 lumens. Two dioddrivare part of efforts to control the LEDs. The driver controls the upper two diodes and the other driver will take care of the lonely bottom. The electronics lamp icon in the lamp also takes care of battery and temperature monitoring. LEDs are heat sensitive and will not do well at high temperatures. The lamp housing is made of aluminum and fitted with fins that takes care of and dissipates lamp icon heat. The diodes sit glued into the lamp housing with what we assume is thermally conductive adhesive. As extra protection is an electronic overheat protection. The lenses for the LEDs sit in the front glass consists of two upper remotely lenses with 10 degree light distribution and a lower flood lens with 60 degrees. The light image is an asymmetrical, where the narrow remote light is positioned at the upper edge of the river of light circle. This is according to Silva, the intelligent with Alpha.
Directed along the surface it appears osymetriska bright picture better. Lamp positioning is right with river light up close and remote light farther. The front glass provides a uniform light pattern, without interruption, dark areas or optical defects. In the periphery are, however, some irregularly scattered light but is nothing to interfere.
The body of 53 centimeters cord: 135 grams. Extension Cable 123 cm: 53 grams. Helmet attachment: 8 grams. Bike carrier: 33 grams. Main Stand: 49 grams. Battery lamp icon 12cm cord: 335 grams. Charger: 264 grams.
Silva Alpha has four lighting modes and a visibilitetsläge. All light modes are controlled by the single button on the top. A short button press turns on the headlamp and the start of the light mode 1. The following button allows light mode 2 and so on. After light mode 4 recur light mode first
Light Mode 1. All three LEDs are lit at full power. Consumption approximately 14.7 W. Light Mode 2. All three LEDs are lit on medium power. Consumption approximately 7.9 W. Brightness Mode 3. All three LEDs are lit in Power Save mode. Consumption approximately 0.9 W. Brightness Mode 4. Flood Light mode. The lower LED lights with full power. The other two LEDs are off. Consumption about 4.7 W.
Location 5 Visibilitetsljus. If the switch lamp icon is kept inside more than five seconds starts visibilitetsljuset. lamp icon There is a flashing light meant to attract attention. The light flashes at full power with a frequency of about 33 Hz. The light is reminiscent of old-time fast blinking H-light for motorcycles. Riding with flashing light can be a pain but it gives guaranteed attention in traffic.
It can be difficult to determine images of a lamp brightness and qualities. We therefore took the opportunity to bring a Silva 478 for comparison. The old 10/20 W halogen lamp is a popular light of many bikers. The picture shows the lamp in 20W mode.
The light from the 478 has a yellower color temperature than their LED cousin Alpha. The halogen lamp has a rounder evenly bright image compared to Alpha, but it lacks the brightness at long distances. The weight of Silva 478 lamp is 145 grams.
LED does not thrive in high heat. Unlike lamp icon halogen bulbs which can withstand several hundred degrees begin an LED to feel bad already at about 50 degrees. LEDs can not radiate away its excess heat that a halogen lamp with no heat must be dissipated using a heatsink. The larger heatsink used the more efficient cooling. But heatsinks weigh a lot and manufacturers therefore make a balance between keeping the weight down to having good cooling capacity.
Standing at room temperature in mode 1 K
LED development is in full swing and old technology quickly becomes outdated. Silva's lamp icon latest LED headlamp was introduced in spring 2009. Since then, LEDs have become more powerful, energy-efficient and less expensive. Can Silva Alpha with its intelligent lens system to compensate for old technology? We have tested. lamp icon
LED is hot. Everywhere and in all devices will now be LEDs. The uses seem limitless, ranging from energy-saving lighting in the home, yet flatter flat-screen TVs and front lights with its own identity within the automotive industry. The rapid development drives and gives us consumers constantly powerful LED with lower energy consumption and costs less than its predecessors.
Silva is a familiar brand to many dark cyclists. The old faithful servants halogen lamps 478 and 480 adorn the helmets of many of those who love to take a ride after dark. With the new Alpha wants Silva to seriously take the step into the increasingly popular and growing LED world.
Alpha comes in a large bag. With its contoured Silva Logo feels lavish purse and gives a solid impression. Internally, each part has its own place in the cut foam interior. Silva Alpha 6 supplied with lamp, extension cord, helmet mount, bike mount, head position, battery, charger and Swedish manual
In the cast lamp housing houses three LEDs and electronics to these. The diodes are three identical Luxeon K2. An elderly diode today aside. A quick look in the datasheet gives the effect of a Luxeon K2 is 5 watts and light output 160 lumens. Two dioddrivare part of efforts to control the LEDs. The driver controls the upper two diodes and the other driver will take care of the lonely bottom. The electronics lamp icon in the lamp also takes care of battery and temperature monitoring. LEDs are heat sensitive and will not do well at high temperatures. The lamp housing is made of aluminum and fitted with fins that takes care of and dissipates lamp icon heat. The diodes sit glued into the lamp housing with what we assume is thermally conductive adhesive. As extra protection is an electronic overheat protection. The lenses for the LEDs sit in the front glass consists of two upper remotely lenses with 10 degree light distribution and a lower flood lens with 60 degrees. The light image is an asymmetrical, where the narrow remote light is positioned at the upper edge of the river of light circle. This is according to Silva, the intelligent with Alpha.
Directed along the surface it appears osymetriska bright picture better. Lamp positioning is right with river light up close and remote light farther. The front glass provides a uniform light pattern, without interruption, dark areas or optical defects. In the periphery are, however, some irregularly scattered light but is nothing to interfere.
The body of 53 centimeters cord: 135 grams. Extension Cable 123 cm: 53 grams. Helmet attachment: 8 grams. Bike carrier: 33 grams. Main Stand: 49 grams. Battery lamp icon 12cm cord: 335 grams. Charger: 264 grams.
Silva Alpha has four lighting modes and a visibilitetsläge. All light modes are controlled by the single button on the top. A short button press turns on the headlamp and the start of the light mode 1. The following button allows light mode 2 and so on. After light mode 4 recur light mode first
Light Mode 1. All three LEDs are lit at full power. Consumption approximately 14.7 W. Light Mode 2. All three LEDs are lit on medium power. Consumption approximately 7.9 W. Brightness Mode 3. All three LEDs are lit in Power Save mode. Consumption approximately 0.9 W. Brightness Mode 4. Flood Light mode. The lower LED lights with full power. The other two LEDs are off. Consumption about 4.7 W.
Location 5 Visibilitetsljus. If the switch lamp icon is kept inside more than five seconds starts visibilitetsljuset. lamp icon There is a flashing light meant to attract attention. The light flashes at full power with a frequency of about 33 Hz. The light is reminiscent of old-time fast blinking H-light for motorcycles. Riding with flashing light can be a pain but it gives guaranteed attention in traffic.
It can be difficult to determine images of a lamp brightness and qualities. We therefore took the opportunity to bring a Silva 478 for comparison. The old 10/20 W halogen lamp is a popular light of many bikers. The picture shows the lamp in 20W mode.
The light from the 478 has a yellower color temperature than their LED cousin Alpha. The halogen lamp has a rounder evenly bright image compared to Alpha, but it lacks the brightness at long distances. The weight of Silva 478 lamp is 145 grams.
LED does not thrive in high heat. Unlike lamp icon halogen bulbs which can withstand several hundred degrees begin an LED to feel bad already at about 50 degrees. LEDs can not radiate away its excess heat that a halogen lamp with no heat must be dissipated using a heatsink. The larger heatsink used the more efficient cooling. But heatsinks weigh a lot and manufacturers therefore make a balance between keeping the weight down to having good cooling capacity.
Standing at room temperature in mode 1 K
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