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REQ: coil volatage on old relay

Got a 1960s vintage sealed relay with an octal base, DPDT but no indication of coil voltage. Part No. is C.P. Clare HG2...
4 comments posted 19yrs
posted by capnjohn
4 comments posted 19yrs posted by capnjohn

Interfacing AD620 to a PIC microcontroller

Dear All, I have a 4-20mA pressure sensor and use a microcontroller to measure the pressure. My region of Interest is 9...
1 comments posted 19yrs
posted by mehmetozcelebi
1 comments posted 19yrs posted by mehmetozcelebi

iphone

The iphone, the cell phone of the future. good article on subject can be found at http://mwma.org/news/content/view/113/...
0 comments posted 19yrs
posted by groups33
0 comments posted 19yrs posted by groups33

Stolen or lost cell phones.

May not belong in this area and of course has nothing to do with email. However, it seems everyone who is anyone has wh...
3 comments posted 19yrs
posted by jalmondundefined1
3 comments posted 19yrs posted by jalmondundefined1

HELP !! URGENT !!

can anyone please help me to get the circuit diagram of an 8051 universal programmer...i made a huge project and am comp...
2 comments posted 19yrs
posted by samrat.kishor
2 comments posted 19yrs posted by samrat.kishor

Microwave oven leakage tester.

Anyone know what sort of shops in the UK might sell these? I thought Argos did, but I've leafed through their (sizeable)...
4 comments posted 19yrs
posted by dai.ode
4 comments posted 19yrs posted by dai.ode

accidental fireball production using SMPS

Hi all. I just had something unusual happen. Someone brought in a power supply for a FS laptop, which had stopped worki...
8 comments posted 19yrs
posted by testing_h
8 comments posted 19yrs posted by testing_h

About an audio spectrum analyser schematic

Hello I did found this audio bandwidth spectrum analyser page; http://www.ethanwiner.com/spectrum.html Any suggestion to...
2 comments posted 19yrs
posted by bd518
2 comments posted 19yrs posted by bd518

Electric motors newbie questions

Hello, I'm a newbie and I'd like to learn a little about electric motors. I've had a run-through of electric motors and...
0 comments posted 19yrs
posted by dartkick
0 comments posted 19yrs posted by dartkick

Is a pump a resistive or inductive load?

I've got one of these pumps in a rainwater harvesting tank. http://www.rainharvesting.co.uk/pdfs/In%26Out%20pump.pdf Cu...
0 comments posted 19yrs
posted by colin.watters
0 comments posted 19yrs posted by colin.watters

variable amplitude ac to ac converter

Dear All, I am using a motorized variac to generate 50 Hz 40-180 VAC signal from a 220V source (The load draws 10 A max...
5 comments posted 19yrs
posted by mehmetozcelebi
5 comments posted 19yrs posted by mehmetozcelebi

PIC16F84, programming

Hello I was looking at the www.microchip.com homepage, and as usual a big site impossible to find anything. I have a da...
3 comments posted 19yrs
posted by sonnich
3 comments posted 19yrs posted by sonnich

Telephone ringer circuit ?

Hi! What is the best way to make 24 telephones ring ? I have gathered quite a bit of information at http://wiki.dataflo...
6 comments posted 19yrs
posted by quessy
6 comments posted 19yrs posted by quessy

Re: experience with USB osiclloscopes?

> >>I made my own for £20 in components and a couple of hours to write the >>software. > > If it's anything like your P...
2 comments posted 19yrs
posted by ba221
2 comments posted 19yrs posted by ba221