Electronics Forum / Electronics / September 2005

Does anyone know if a AY-3-8910 sound generator can be replaced with the
AY-3-8910A or AY-3-8910A/P versions?
Hope you can help,
Mark Capps

50% off for repair test & measurement instruments,
With full service repair depots located in Singapore, No evaluation charge ,
free pick up and free delivery in singapore , Call Now (65)93887563
http://axtronics.tripod.com/index.htm

For auction on eBay:
Wavetek 3000 SSI Service Monitor
for parts or repair
Item# 7550514534

Is there any practical solution for DIY solder mask and silkscreening
for homebrew PCBs? I know there are plenty of mail-order PCB
manufacturers that supply these services, but I like making my own
boards and being able to add the glossy green stuff and little white

To the conspiracy theorists among you, this post may look like an
attempt to slip in a commercial message.  Heaven forfend!  It's a
genuine request for information.  (Although if you ARE interested in
buying... :-)

I live in the NYC area and have a tv antenna in the attic (no cable).
A year or two ago I started getting interference that totally
obliterates channel 2 (and, rarely, 4).  It almost always starts (if it
starts) around 12:35.  Sometimes it goes for hours, sometimes it goes

Hi, does anyone know where I can get a formal Backus-Naur style syntax
and/or grammar definition for any of the various SPICEs out there?
Specifically, hspice, pspice, or berkeley spice.  What is the
difference from a grammar/syntax perspective?

There is a "freezer to fridge" conversion project in this months ReNew
magazine which claims to convert a freezer into a supper efficient
0.1kWh/day fridge.
It's basically a thermostat which switches the freezer mains power off

I have recently moved into a block of flats in an area which cannot
receive terrestrial digital TV so my set-top box is now useless. [The
local antenna has not been upgraded to transmit digital TV.]
The flats have a communal dish for Sky reception and each flat has a

We are a group of uni students with limited experience in electronics. As a
part of our uni projects we have designed some electronic circuits Altium's
DXP. The circuits contains various integrated circuits in SOIC and DIP
packages and some passive componets including connectors. ...

I am still plugging away for the 100% perfect H-bridge design. While the
driveing wave is 100% perfect, rock solid, down to just 10mV noise, totally
fantasic, and yet. still H-bridge problems, and that should be the easy bit
right ?

Dear sirs,
We do the low cost electronic PABX that can work for AUS market and telecom
section.
Detail specification here :

OK, I need some help...
I got a pile (10 to be exact) keypads from a sale on EBay.
Now I have to figure out what to do with them.
They have connections basically painted on to a mylar substrate.  The

I'm just starting and having trouble with basic terminology.
Can anyone tell me what the term is for the connector shown here?
http://www.filefarmer.com/csroman/connector/
Thanks

HI all. Can anyone point me to someone who will supply one (1) only
Power-One MAP55-1012 power supply to New Zealand? Preferably FedEx'd and
paid on an AMEX.
Cheers.