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Where to buy 40pin edge-connector (2mm spacing)?

I need some 40 pin card-edge connectors. It's the kind which has been for the Atari ST cartridge port. Unfortunately I...
6 comments posted 18yrs
posted by no-spam2
6 comments posted 18yrs posted by no-spam2

I Found a Good China PCB Factory

Wonder Electronic Technology Co. Ltd is an advanced venture in Guangzhou. It mainly develops, manufactures and sells hi...
2 comments posted 18yrs
posted by lizhiren
2 comments posted 18yrs posted by lizhiren

High voltage power supply chassis

Hi, I've just started an Associates level Biomedical Engineering Technology program and we have to design a power this...
13 comments posted 18yrs
posted by fcache
13 comments posted 18yrs posted by fcache

how do pins on ICs typically die ?

hello, i have a 40 pin VFD driver chip SN755518N that three of the pins Q20 Q21 appeared to have gone quiet/died . Q24...
9 comments posted 18yrs
posted by some
9 comments posted 18yrs posted by some

HP6034A TMS9981 CPU won't exit reset state.

Here's one that has me puzzled: I have a HP 6034A power supply that does not come out of self-test when powered up. Int...
4 comments posted 18yrs
posted by none
4 comments posted 18yrs posted by none

Cheapest 3.3V JTAG part?

What is the cheapest 3.3V RoHS JTAG part available which has at least 6-pins that I can control from the boundary scan...
2 comments posted 18yrs
posted by newsmail6
2 comments posted 18yrs posted by newsmail6

Noob piezo resonator question:

Sorry to be such a novice, but can someone tell me if a piezo electric crystal resonator will make an audible sound if...
3 comments posted 18yrs
posted by blarg
3 comments posted 18yrs posted by blarg

gas discharge tube indentification

I have some GDTs that I can't find any info on. Here are the markings: 3P90L4 - 3 leaded ceramic CM3-90 - 3 leaded cera...
2 comments posted 18yrs
posted by jaylevin...
2 comments posted 18yrs posted by jaylevin...

help diagnose old circuit board, fault

hello, i am trying to repair a fault with an user interface circuit (UIC) board and control board out of an old 1987's...
45 comments posted 18yrs
posted by some
45 comments posted 18yrs posted by some

Crosspost: Advise and datasheets needed

First of all, i'm sorry because of crossposting. I didn't know on wich groups to post this question so sorry. Second so...
0 comments posted 18yrs
posted by ikalafat_makni
0 comments posted 18yrs posted by ikalafat_makni

What's the most temperature stable capacitor?

I've been asked to design a low pass filter, but, it's to work over the range -40C to +65C (maybe +75C). The frequencie...
5 comments posted 18yrs
posted by Paul
5 comments posted 18yrs posted by Paul

darlington replacement ?

hi, i have a blown npn darlington 2sd1525 from a cars fan speed controller , and its rated at 30 amp , doesnt this seem...
4 comments posted 18yrs
posted by krawczuk65
4 comments posted 18yrs posted by krawczuk65

superconductor

hi why silver ,gold,copper not loose thier resistivity at low temparature(4.2K) while mercury looses it?
0 comments posted 18yrs
posted by shashi.sastra
0 comments posted 18yrs posted by shashi.sastra

conduction

hi whether conduction is on the surface of copper wire or in the core of copper wire?
1 comments posted 18yrs
posted by shashi.sastra
1 comments posted 18yrs posted by shashi.sastra