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One Motion Sensor Light Turns On Other Lights

I had a situation the other day where three motion sensor lights were all wired to the same circuit, and when one light...
4 comments posted 15yrs
posted by persistentone
4 comments posted 15yrs posted by persistentone

Laptop Power Bricks and Grounding (Earthing)

I hope this is the right group for this question. On my Apple MagSafe AC adapter, it can take 100 to 240v AC 50/60 cycl...
16 comments posted 15yrs
posted by justin
16 comments posted 15yrs posted by justin

Need to generate a TTL signal from a footswitch

I have an optical shutter controller which drives a shutter using either a TTL-level pulse or a footswitch. Unfortunate...
4 comments posted 15yrs
posted by mgklein
4 comments posted 15yrs posted by mgklein

inductive sensing relay ?

Looking to have a relay close when current passes through a wire that I'm NOT allowed to cut into, or probe. Basically...
19 comments posted 15yrs
posted by hooper1
19 comments posted 15yrs posted by hooper1

IDC 40-pin connector for 80-conductor cable?

Looking for IDC male connector, 40-pin for 80-conductor ribbon cable. This is used on IDE hard drives. Or an 80-conduct...
21 comments posted 15yrs
posted by invalid
21 comments posted 15yrs posted by invalid

aluminium gland plates

do aluminium gland plates need to be slotted
0 comments posted 15yrs
posted by claymiller
0 comments posted 15yrs posted by claymiller

Supercaps and ESR

Trying to find a replacement for a 1F/2.5V supercap. Original: I can find local replacements rated 1F/5V but the ESR is...
11 comments posted 15yrs
posted by invalid
11 comments posted 15yrs posted by invalid

Temporary power generation

Following a local cut in supply, UK Power Networks installed a temporary generator (about half the size of a large cont...
5 comments posted 15yrs
posted by jmlayman
5 comments posted 15yrs posted by jmlayman

Print inspection at high speed paper webs

Print inspection =E2=80=93 tipping paper =E2=80=93 quad bobbins Date: 9th December 2010 Patent applied =E2=80=A2 tippin...
0 comments posted 15yrs
posted by werner-grosse
0 comments posted 15yrs posted by werner-grosse

How do cell phones work

My nephew and I were watching the new movie Buried 2010. A US citizen working in Iraq as a truck driver is buried alive...
2 comments posted 15yrs
posted by kilowatt
2 comments posted 15yrs posted by kilowatt

Quad 40/40 Breaker for GE TQP TQL TQL-AC

Is there a quad 40A breaker that is for a GE panel, any of these types: TQP TQL TQL-AC TQAL-AC THQL-AC THQAL-AC TXQL I...
5 comments posted 15yrs
posted by persistentone
5 comments posted 15yrs posted by persistentone