Electronics Forum / Components / August 2006

Can anyone help, I am looking for a replacement for LM387 Low Noise
Dual Preamplifier which is now discontinued,  I have look on the net
but no luck but maybe I am looking in the wrong place.
Thanks

Hello.  I'm currently working at Gambia College in West Africa and I'm
in need of some capacitors to fix a motherboard.  However, I don't know
how to acquire them.  I've searched google and asked around locally but
haven't found any shop that either ships here or sells within ...

I've got a circuit that works perfectly with NTE326 P-channel JFET
(prototype).  I need to replace this with a SOT-23 footprint (PCB, surface
mount).  I tried a BSS84 but it does not work in the circuit.  Any
suggestions?

New Item Offer :
IC Items : For DMB Phone
1.       CXA3235N-T4 : SONY : 56,000 Pieces, 1,000 Pieces/Reel   : D/C: 05+

How do you figure out what a digital gate senses as HIGH and LOW? I
thought it was labeld VIH, VIL, VOH, and VOL. But ive been told that by
setting VIH you can set what VOH is. Totally confused by this. I
thought there was a specified range, and that was what you used.

I used to buy these things from Jay, who had a surplus warehouse in the
south SF Bay area (he had thousands of them), so if anyone knows where
he is, of has a big pile of the little crutters (need at least 100,
would like more) please sing out.

I have a home irrigation controller hat has gone faulty on one of the zones,
I have opened it up and have found one of the transistors to be faulty there
is a number on the transistor but it looks like its a part number from the
manufacturer of the irrigation unit rather then the ...

I have designed my digital circuit by using TinyLogic devices,
throttling them at 5V. I am using them because of there LOW and HIGH
voltage specs, because there inputs are from a PIC. Just wondering if
these units performed as you expected.

I am looking for a small component or circuit to make a touch switch of
an aluminum shell. Circuitry inside the shell would only be active while
somebody is touching the shell. When not touched I need minimal battery
drainage.

I have an unknown electronics part, and I'm looking to identify it:
- 5 pin device, something variable about it b/c there's a slotted screw
turn on top
- Markings:

Where can i find a mouse encoder sensor { dual channel , quadrature} ?
used in most of the mechanical mouse.
Or What is its part number...i am searching that to make a encoder of
my own.

I've been trying to get the fools at Pasternack to stop sending me their
catalogs for about ten years now. Long ago I made the mistake of buying
some attenuators which quickly quit working (besides being way
overpriced).

How do I make a small flashing led light that flashes avery 7 seconds.
The board needs to be about the size of a silver dollar and could be
powered by a watch battery.

Sony CCD,LCD, Switch blocks, Drums, Flexible strips are always in short
supply.
We stock them for Sony customers and Ship Worldwide. We are PAYPAL
member.

Can anybody sell those in small quantities? I need two of AK5394A and ten of
AK4395. AllAmerican doesn't have them in stock and they told me that when
(and if) they will, they will be only sold in box quantities...
---