I have TWO Zetron Model 50 DID Telephone Trunk Converters for sale.

These both are in BRAND NEW CONDITION.  They were in use for less than a year.

A DID (direct inward dial) line allows each mobile radio or pager to be
reached at a unique, seven-digit telephone number, just as in cellular
service.  A caller doesn’t have to overdial extra codes in order to reach
a radio or pager.

They were designed to be used with a Zetron Model 45B (Z-Patch), 46
(Trunked Interconnect) or Model 48B (Repeater Manager) but will work with
ANY DID installation.

Rack-mount. All manuals included.

This allows each subscriber to have his own unique telephone number!

Original price was $1,000 each.  Willing to sell for $1200 for both or
$700 each — OR BEST OFFER.

email: kg…@telerama.lm.com

hey people. I was recently given a batch of Hitachi HM65256BLP-12 SRAM’s,
which as far as i know, are 32Kx8. Is the pinout for these the same or at
least similar to the 62256 32k8 SRAM pinout that i’m familiar with?

Hitachi’s website doesn’t have the chip..

Another thing: Is there a 512Kx8 SRAM made that comes in a DIP package?
I’m trying to get one for my KPC-3, and the only ones i’ve been able to
find are 32pin PLCC packages. There are plenty of PLCC-to-DIP converters
out there, but the only ones i’ve found stick to square PLCC packages,
i.e. 20/28/44pin. Alternatively, if anyone knows where i can get a
PLCC-DIP converter that takes a 32pin PLCC, tell me about it.

-gee (gma…@surf.seascape.com)

I have a test in electronics on monday about transistors…

My courses are not good at all and there are some questions i can’t
answer.

Could you give me the URL of site dealing with transistors theory ?
key words : NPN, PNP, bipolar, field effect, polarisation, etc…

thanks to reply to cham…@ec-lille.fr

What is the description name ( i.e. T-1, etc) for a miniature bulb of this
type:

screw in type
base diameter of 3/8"
base heighth of   1/2"
overall lentgth of 1"

Also, if anyone has a good contact for bulbs, I am looking for a
preferrably 10, but as low as 5 watt bulb for 4.8 or 14.4V DC.

Thanks.

If you are looking for electronics (analyzers, amplifiers, filters,
meters, oscilloscopes, measuring equipment and much,much more), please
email me with your physical address for a free catalog or call
1-800-527-4642.

5b0uof$…@miepmiep.HZeeland.nl

I have 8 pages of data on the 2208
please contact e-mail or telephone me the proprietor of
Diverse Devices,Southampton,England;telephone /Fax  (+44)  (-0)1703 584680
    (Shop stocking obscure/obsolete components,second hand test equipment,schematics etc)
Postal: 75 Priory Rd,St Denys,Southampton,England   SO17 2JQ.
email dive…@tcp.co.uk hints/tips on homepage http://www.tcp.co.uk/~diverse/
regards,        Nigel

I have an LM323K +5V regulator in a TO-3 style, how do I wire the thing to get
my +5V out?  A diagram to show which pins connect to what would help!!
Thanks!

Can anyone please help? I am looking for parts for a tek. 485 oscilloscope. Does
anybody know of one that could be bought for scrap or do you know of a source that
"breaks" oscilloscopes.The parts I am looking for are power supply bits.
               Thanking you

I have this project I need to get done.  All the parts were done with Motorola
stuff like eproms and a microcontroller.  I am unsure how to get these things
since motorola dealers are no where near me and what not.  Any clues would be
great.  Thanx…

                Jason M. Foster
                jmfos…@mtu.edu

In article <5b81nh$…@news.mel.aone.net.au>, elmer…@wb.com (Elmer Fudd) says:

>I know the first channel (by default) is set in MODE 0 (interrupt on
>terminal count) and is responsible for the ticks that occur 18.2
>times/second, by triggering hardware interupt 0.

>BUT!  What do the other channels output too?

The 8253 (later 8254, intergrated in the 82C206 etc)) has three
timer channels

The 2nd is triggering the dram memory refresh, the dma channel 4.
The 3rd is used for the speaker sound (there is a gate circuit).

Osmo