Lighting terms

If you feel that your question or comment doesn't fit into the categories above, feel free to post it here.

Lighting terms

Post by GlennK » Sun Jul 30, 2006 3:43 am

You might say 'support circuitry.' The issue is, of course, that different lighting technologies require such different kinds of support circuitry. Not all of it is for 'starting' or 'ignition.' As an example, home fluorescent tubes can operate on the same voltage as household line voltage, so no transformer is needed, but once they are lit, or 'started,' they offer very little electrical resistance in the circuit and therefore could easily 'run away' - that is, start passing more and more current and producing more and more light and heat and developing a lower and lower resistance, until either blowing the fuse or tripping the circuit breaker (or if not that, eventually shattering with a bang). So the original purpose of a 'ballast' - a single magnetic coil in a box - was not to light the lamp but to add what they call 'inductive reactance' to the circuit, in series with the lamp current, essentially to keep it lit at a reasonable wattage.
ACCESS_POST_ACTIONS

Lighting terms

Post by Edwin Ashworth » Mon Jul 31, 2006 7:20 am

Spiritus, I thought you'd been banned from doing magic.
ACCESS_POST_ACTIONS

Lighting terms

Post by spiritus » Wed Aug 02, 2006 5:03 am

Edin Ashworth, not that I know of. Perhaps it's magical thinking that prompts your thought.
ACCESS_POST_ACTIONS
Signature: Che Baraka

Lighting terms

Post by Erik_Kowal » Wed Aug 02, 2006 6:29 am

Maybe Edwin was born under a wanding star.
ACCESS_POST_ACTIONS
Signature: -- Looking up a word? Try OneLook's metadictionary (--> definitions) and reverse dictionary (--> terms based on your definitions)8-- Contribute favourite diary entries, quotations and more here8 -- Find new postings easily with Active Topics8-- Want to research a word? Get essential tips from experienced researcher Ken Greenwald

Lighting terms

Post by mongrowl » Thu Aug 17, 2006 7:15 pm

So the original purpose of a 'ballast'
Yes. So as to offset the force of a "gale" of electrons.
Lneil
ACCESS_POST_ACTIONS
Signature: All we can do is the Best we can do.

ACCESS_END_OF_TOPIC
Post Reply