Electronics Forum / Equipment / August 2003

I have tried four home/office APC units and all of them fail within a year, sometimes after just a few months.
I went with APC because I thought, for some reason, they were supposed to be good.
Perhaps only their enterprise units are good, I don't know.

I'm trying to find a 'LED' 'BarGraph' that does not use discrete leds/dots
(ex.: a stack of 100 leds, or an LCD). I saw these used on a few hi-end
mixers (recording studios). They look like glowing thermometers (as in the
mercury would glow bright green or red) and respond at about ...

Gentlemen,
A few days ago I became a (almost 100%) happy owner of a HP 8640B with
Options 001, 002 and 003. Unfortunately, this fine piece of equipment
suffered a subtle freight damage and demonstrated ZERO RF output when

Hello friends,
Can anyone please give me a pointer as where I can
find a HP8654A signal generator schematics.
Many thanks,

I recently picked up a used two chan 20MHz 1020 Leader scope, very
similar to
www.tequipment.net/LeaderLS8022.html
I'm using (cheap?) Avex 10:1 passive probes

May I ask the group for some procurement advice?
I am looking for a 1000 watt inverter (115 VAC from a 12 VDC
marine or traction battery) that gives a "modified sine
wave" output, literally 6 square waves in a cycle (lots or

Hi everybody,..
I am trying to image a target at around 350 m during night time using
a continous wave (810 nm) LASER diode ( power of 1.8 W).
Two cylindrical lenses ( a convex and a concave with their axis in

I'm about to buy an oscilloscope (right now, I want chance to use it
to test some stuff before I go back to work in 12 days)
My funds are rather limited, and any not spent on the scope will
likely go to other electronics test gear, of which I don't have much

I have an Samsung tv/vcr combo model 3 TVN5054CA. We have lost the remote.
We need a replacement remote that will allow us to activate the Line In/Line
Out feature. It is presently stuck on the "Line In" mode and we are unable
to watch TV.

Can anyone recommend a good ESR Capacitor tester that won't kill the pocket
book?
Thanks,
Gary

The cable TV service companies appear to have monopolies on converter boxes.
Telephone companies have been known to lease and sell telephones to their
customers, but the customers can always go to electronics stores and by
their own telephones (bypassing to need to pay monthly ...

Anyone know where a desoldering station similar to the one below can be
purchased within the UK at a comparable price?
http://www.activemobiles.com/SUNKKO_DESOLD...ING_STATION.htm
Don't really want to approach Active Mobiles as they look to be in a

I just got a Tektronix 2246 4ch 100mhz O-scope on ebay for dirt cheap and it
works like a champ.  Problem is, and I should've caught this ahead of time,
it didn't come with any probes!  (I borrowed a set of probes from a friend
to make sure the 'scope worked as it was advertised)

Looking for a Weston Model 801-58 100uA Circuit Q Meter movement for a
Boonton 260A Q-Meter in good working condition.
Please e-mail with condition and price.
Thanks,

Here is are some new SMD prototype boards
And on ebay too.
Proto-Chip - Surface Mount Prototyping
Circuit Boards