Electronics Forum / Electronics / June 2004

What's the difference between an Energizer, for example, and a Renewal
rechargeable battery in terms of the chemicals?

Here's the situation.  I have a 20 year old amplifier made by Yamaha that
has a number of buttons on the front that are lit by 14.5 V 80mA bulbs.  The
bulbs are not available any longer and I haven't been able to find suitable
replacements.  My question is this:  Is it possible to ...

We have an HP-4145B Parameter Analyser, and we are trying to
programatically (in user mode) apply a current of over 10 mA from one
of the SMU's. We have found that applying currents of less than 10 mA
works fine, but for 10 mA or above, no current is applied. However in

Maplin no longer do me fav case, which is annoying, but it was a metal case,
top was a nice blue colour with vents, paint was like rough and almost
indestructable, anyway, does anyone know who made these cases ? Maplin said
EMS supplied them, though cant find any ref. to EMS with ...

hey I wonder if anyone has ever committed a crime of battery using a set of
batteries (for example, hitting someone with a bag full of batteries, or using
lots of batteries in series to try to electrocute someone). Any references?

Ok, here's the problem. I added flush LP mount lights to the front of my
motorcycle(ditching the huge stalks/signals) and they look great. Problem is
they're 23 watt instead of 28 watts (1157 bulb) and the signals flash
quickly. Is there any way to slow them down???? There is no ...

Hi Design Gurus,
We are trying to create a resource pool of engineers (hardware,
firmware and software, CAD etc.), designers and organizations with
experience in professional AV and interface products.

Does anyone know of any supplier of cheap external passive infra red
detectors preferably battery operated
i have done various searches & not a lot of luck. I need about 10 to 20 of
them

I need a +5v power supply for my cnc mill. I use a takeoff from my computers
supply but would like to use a spare computer supply in the cnc controls
case. How do i do this (and keep the supply turned on). Will running a 1000
ohm resistor across a one of the 5v hookups work?

I'm no computer expert, but I've read somewhere that with a digital PC tuner
card it's possible to view  HDTV on a PC - Is this true, and is it
advisable? How much would such a card cost, and how do you go about
connecting an antenna to the PC - Is it through the tuner card? Thanks ...

I need to find out what the actual heat output for T8 fluorescent
bulbs is.  I know that internally they create a lot of heat most of
which is converted to visible light by the phosphorus coating on the
inside; but how much heat is finally given off thermally that has to

I'm looking for a design and components for a low cost ($15-$25 or so)
solid state audio recorder/playback device that can store at least 15
minutes of good quality audio. The ones I've seen on the web only
record for a couple of minutes at the most, on internal memory.

I've connected the cable from the computer to the TV (S-Video to RCA - TV is
RCA) - now how do I get it to work in place of the monitor. I've switched it
on but it's not displaying anything. Do I have to do anything in the control
panel. Is it possible to have both the monitor and ...

The parameters of SOI NMOSFET I extracted can't simulate kink effect.  The
real device is body tied. But it still has kink effect. so I want to
fabricate a macro model. I used a MOSFET  and a BJT transistor. The
parasitical capacitor will be taken into account through the parameters ...

I want to build a simple remote control device that would send a constant
audio pulse, say 5 to 10 meters away.
I want to be able to remotely control a super 8 movie camera.
Thanks