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> QTY5: low current 12V, 24MA grain of wheat lamp bulbs
QTY5: low current 12V, 24MA grain of wheat lamp bulbs
Qty5: 12V, 24mA, 0.3W Ultra-Miniature Filament Lamp Bulbs. "Grain Of Wheat Bulbs"
This is 5 items of unused, very tiny lamps fresh from the delivery box. They run at full brightness at 12V d.c. at which voltage they take an unusually low 24mA. At 6V they produce reduced brightness and take 16mA. There is still a dull glow at 2V. The total length of the glass section is 6mm and the diameter is approximately 3mm.
You can see pictures of operation at the different voltages here:
http://homepage.ntlworld.com/henry01/for_sale/mini_lamp_12v.jpg
http://homepage.ntlworld.com/henry01/for_sale/mini_lamp_6v.jpg
http://homepage.ntlworld.com/henry01/for_sale/mini_lamp_2V.jpg
These could be useful in several situations:
* In modelmaking where the traditional colour of a tungsten filament lamp is desired, rather than the bluish light obtained from white LEDs. This is especially pronounced when running at less than full power.
* In 12V a.c. applications where LEDs would flicker and suffer excess reverse voltage. Maybe this would be useful in model railways.
* As a light dependant resistor driver in vintage audio compressors.
* Replacement bulb for scale illumination in old tuners, oscilloscopes, and radios etc.
* Replacement bulb for indicators in vintage equipment e.g. the stereo pilot indicator in old tuners where the slower turn-on and turn-off of a filament bulb rather than the instantaneous behaviour of an LED is desired.
The wires on these are bight and shiny so they are easily connected to or soldered without scraping.
