Recent content by aahhaa

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    Light & Motion Stella 300 Dual

    Why would you replace a warm LED with an inferior cold white one rather than a neutral white or better warm white LED?
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    Electronics/ Wireless World 1994/5 Dynamo backup

    Re: Electronics/ Wireless World 1994/5 Dynamo backup (pdf link) Both magazines (Dec 1994: original circuit idea (on pdf page 45 of pdf) and and Oct 1995 containing clarifying letter (page 884 of pdf)) are available at https://www.americanradiohistory.com/Wireless_World_Magazine.htm I presume...
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    Reducing/avoiding flicker in commercial front LED AC generator hub lamps:

    Even if flickering doesn't cause a fit, I have read epileptics say it can cause them discomfort. NB I think an edelux is just a B&M Cyo in a nicer case.
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    E6 light ring: a good idea for all Stzvo lamps(if shielded)?

    The optional light ring on the Schmidt E6 halogen lamp seemed a good idea (if hooded on top): a good idea for all Stzvo lamps(if hooded/shielded on top)? Is a dipped lamp designed to illuminate to road surface necessarily good as a be seen lamp if dipped several degrees more than usual?
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    Reducing/avoiding flicker in commercial front LED AC generator hub lamps:

    I find even my mid price front Stzvo LED flickers at walking and low cycling speed now that it is powered from a hub and not a bottle 'dynamo': As I think it would be better for front LED lamps not to flicker so much (after all in the UK battery lamps are strictly limited to a simple 1-4Hz...
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    Electronics/ Wireless World 1994/5 Dynamo backup

    I always liked the battery backup in Dec 1994 and repeated/clarified in Oct 95 Wireless world which was a voltage doubling rectifier (cascaded type (so no floating generator needed) ) clamped to 27V followed by a LM2575 step down regulator to 6V (which trickle charged 4 ni-cds for backup...
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