Electronics Forum / Components / June 2008

Do latched relays in general "wiggle" back and forth (if even for a
fraction of a second), or do they work as a firm and precise on/off switch?
I'm planning to cut/supply power to an external SATA hard drive by
having the +12V and +5V lines through a relay (dual pole), controlled ...

Does the SDSA 1175 Surge Arrester installation require turning off all
of the power?  Or, can the SDSA be installed while the power is on?
An electrician installed one on our control panel in the garage, but
power was never cut off.  Just wondering if he did it right......

DESCRIPTION
The LT®1580 is a 7A low dropout regulator designed to power the new
generation of microprocessors. The dropout voltage of this device is
100mV at light loads rising to just 540mV at 7A. To achieve this

Ok, guys, we had a thread about NXP's site a while ago. Long story short
I wrote to them and, surprise, they engaged in a lively back-and-forth
improvement session and really listened. They changed a lot of stuff,
got rid of fluff and while not perfect yet I think the NXP site ...

Has anybody this datasheet to copy?
Kindly, EePee.

From the 1970s / 1980s. I have an RCA databook with a lot of the big number
RCA transistor full data, but cannot find full data anywhere on these 1C..
ones , that  is 1C ( one see) not IC ( India Charlie ).
Google, in half the hits seems, to show lesser data/ working subs I've put

Hi, someone ever it replaced the HP transistor 1853-0015 with standard one?
many thanks.

I'm looking for the smallest mechanical encoder in existence that is
readily bought.
NOT one that is designed to be mounted onto motors like the one
micromo/faulhaber sells as 'world's smallest encoder.'

This is TO-220 case and I`m not sure what kind of component is this, Fet or
standard PNP/NPN transistor. It is used inside car for blower speed
regulator 12V / DC. Thanks for any help.

Hello all, I am repairing a Keithley 617 that has a blown input JFET Q308
which is no longer available. Looking at the service manual, I am unable
to determine what a good sub would be, as the part # is a Keithley house
numbered part (617-606) The manual is here:

I have a problem controlling the ISD2560 audio recorder,
connected to a microcontroller (Atmel Mega 32). I have recorded
several messages and they are correctly played back in push button
mode. But I need to play one specified message, not all of them.

Hi. Would you please tell me about the response time of RPY102 &
RPY109 pyroelectric detectors .
best regards,
M.A

I'm looking for a very low-profile trimmer pot (since it has limits)
that will be used for a knob that will be used a lot.
An encoder would've been nice but they keep turning and they're also
hard to find in this size:

Hi to all
I am actually restoring an old SAYROSA 352 B spectrum analyser & I
will need this IC to complete the restoration, could someone tell me
where I could find this MD-614 mixer  ?

I'm trying to repair a cellphone from Nokia.
It's an old Nokia 7110 that doesn't turn on.
After I disassembed, I found two SMD components that are cooked on one
side (there are other 5 like those two and they are perfectly yellow