My entries for the Flashing Light Prize 2017 ( https://www.flashinglightprize.com/ ), a competition to find unique technical methods for causing an incandescent light bulb to flash. Starts with 0.5W, then moves up to 1,000W. <br /> <br />This video was originally uploaded on my personal website because I had lots of trouble getting it onto a video hosting website. <br />http://computernerdkev.heliohost.org/swingstrober/Flashing_Light_Prize_2017_Entry_-_Swing_Strober__Xvid.avi (223MB, will probably be removed later) <br /> <br />Some Extra Details: <br />*The pre-manufactured flashing light bulbs were made by General Electric, model no. 401X. 1.5V 0.33A (0.5W) E10 (10mm) socket. <br /> <br />*The Philips Colorenta bulbs used were old stock, but it seems that the bulbs may still be available, although they're currently being replaced by LED alternatives. After a lot of searching, I found an image of one from another manufacturer that isn't frosted, so you can see the internal design: <br />https://internationallamps.co.uk/product/long-tube-striplight-filament-colorenta-light-bulb-40w-e27-279523240/ <br />In case that page is removed, I've saved the image here: <br />http://computernerdkev.heliohost.org/swingstrober/colorenta.jpg <br />It appears that the bulbs acutally have multiple filaments inside, connected in parallel along the length of the tube. <br /> <br />*The circuit in the Swing Strober, for detecting the light from the swinging Colorenta bulbs in order to flash the 1,000W bulb, is a simple design based around that old IC favourite, the NE555. A relay is used to switch the 240VAC. I've drawn out the schematic, which can be found here: <br />http://computernerdkev.heliohost.org/swingstrober/flasher_schematic.gif <br />Circuit Notes here: <br />http://computernerdkev.heliohost.org/swingstrober/flasher_schematic.txt <br /> <br />I'm better with a still camera :) : <br />http://computernerdkev.heliohost.org/swingstrober/p1010001,c.jpg
