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FS: Mercury Relays

Our club is trying to help in an estate . We are trying to dispose of the following: Mercury-wetted relays 8 Ea. SPDT 1...
0 comments posted 23yrs
posted by penguino
0 comments posted 23yrs posted by penguino

ballast lifespan

If you disconnect all the fluorescent lights from a ballast, but the ballast still gets power, does it harm the ballast?
10 comments posted 23yrs
posted by zawy
10 comments posted 23yrs posted by zawy

Equipment for PCB prototyping ...

Hi all, Can you all point me to a place which sells PCB prototyping equipment for a decent price. I am looking at small...
4 comments posted 23yrs
posted by s.garg
4 comments posted 23yrs posted by s.garg

rf preamp

Hi, Where can I find a small signal model for an Agilent Transistor ATF54143. I have gone through the agilent site but...
0 comments posted 23yrs
posted by sthim2003
0 comments posted 23yrs posted by sthim2003

Pioneer SA 7800

Hi,I need schematic diagram for PIONEER SA 7800. Regard snipped-for-privacy@ifrance.com
0 comments posted 23yrs
posted by gmbh
0 comments posted 23yrs posted by gmbh

LM3886 in inverted configuration

Can I use LM3886 in inverted configuration? Any links to the schematic? While searching for it on the web I always got...
2 comments posted 23yrs
posted by mahenreddy
2 comments posted 23yrs posted by mahenreddy

Delaying a logic signal?

Hi, I'm designing a simple (ha!) digital oscilloscope that should theoretically be able to sample up to 80MHz with two...
3 comments posted 23yrs
posted by philpem
3 comments posted 23yrs posted by philpem

fluorescent light problem

Two fluorescent fixtures in two bathrooms of my mother's house seem to be possessed. Both are integral parts of medicin...
12 comments posted 23yrs
posted by NoSpam
12 comments posted 23yrs posted by NoSpam

Record for boombox?

I have a small boombox with CD, tape and radio. It has speakers, but no output jack to a headphone or to connect it to...
2 comments posted 23yrs
posted by wer25
2 comments posted 23yrs posted by wer25

Unwanted oscillations

I've got a simple circuit that uses a BC337 NPN transistor to switch a DC buzzer on and off.. It's set up as a classic...
2 comments posted 23yrs
posted by colin.watters
2 comments posted 23yrs posted by colin.watters

Which manufacturer is this..

I have a crystal marked "DSL 9.216 20" and would like to identify the maker. (Specifically I'd like to check that the 2...
2 comments posted 23yrs
posted by colin.watters
2 comments posted 23yrs posted by colin.watters

Flakey phone battery fix ? Anyone ?

Hi group , Got one of those flakey phone batteries . Works on standby and cuts out about 5 seconds into a call , on a f...
8 comments posted 23yrs
posted by testing_h
8 comments posted 23yrs posted by testing_h

Re: ring killer

> does anyone have a design for a cct that shorts ring > current and is switched by the pc? > this would be _very_ hand...
9 comments posted 23yrs
posted by rcrowley7
9 comments posted 23yrs posted by rcrowley7