Electronics Forum / Equipment / April 2006

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I am in the UK.
I have a hi-fi cassette player and I feed the outputs to the line-in
on the motherboard of my PC.
I get a horrible hum on the recording I make on the PC.  The

Would anyone have any reviews/views on the 1241?  I'm considering buying
one, with the colour shutter / psuedo arrangement concerning me.  Just
wondering what else I could get for my money.
Have an R&S LAS5 at the moment but with no pods or system disks, so a basic

I need a crt for an hp 1741a scope---5083-5070 or standard p31..anyone?

A question about complaince for very low voltage devices -
The European Union introduced loads of regulations for Low voltage, but
then defines this as 75V - 1000V DC.
I'm thinking of a product that runs off 4.5 - 7.5 volts, powered by a

I have a FORMENTI TV which I bought about 12 years ago - model is F8A71
- where can I buy a remote control for it?  The old remote control had
DIGICOMPUTER 45 KEYS written on it!
Thanks!

Does anybody here have the service manual for frequency counter Philips
PM 6672 ?
Thanks beforehand,
Dario.

I am in the UK and have a 1.3 litre Mazda which is over 10 years
old.
I have been reading a few web pages which made reference to the
reader's car which "may have a dashmoard voltmeter".

I have a 2215A Tektronix oscilloscope that has a problem. The CRT lights up
but it displays a square lighted area (about 3" wide X 2" high) without any
input on either channels, not a straight line. Although the display can be
moved left, right, up and down the focus control does ...

Any reason I couldn't use a big switching power supply as the basis for a
500W (+-) inductive heater?
Anyone have any insight that would be helpful as I jump into this?
Thx

 I am about to set up a personal lab for a few projects I have in
mind.  I need some advice about a decent and affordable logic analyzer
and an oscilloscope.  Also, there seems to be some pc based anaylzers.
I have not worked with those before, any input on performance or any

My PC monitor (17 inch glass tube) is about 4 years old and has
been used heavily.  I took the cover off to fix a loose connection
because the picture was sometimes jumping.
Inside the circuit board was quite dusty and rather sooty.  The

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How safe is aerosol contact cleaner (e.g., Caig Labs D-5) for the switches
on old test gear?  Specifically I'm worried about whether if that stuff
soaks into a circuit board or the wafer of a rotary switch, will it change
the electrical properties?

Ok here's what I want to do, I just don't know how to do it
inexpensively, and what's available.:
I want to light up a small ( 12x18 ) home business sign in front
of the house, on the outer house wall. I want to light it up from