Garmin 45 software update ?
Jean-Pierre Trolet - 11:19 08-03-08
Hello,
Due to low batteries , my GPS has lost all its datas ... and also it
seems the 1999 software update ( EOW rollover story) , and so it
cannot acquire any satellite anymo... Read More
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sci.electronics.basics [6 articles]
18:07 07-03-08
New web access to newsgroup sci.electronics.basics :
http://www.docendi.org/newsgroup-f41.html by http://www.docendi.org
... Read More
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Active low-pass filter with gain [10 articles]
Michael - 15:58 07-03-08
I'm using an LM741 as an active low-pass filter. Non-inverting input
with output capacitor feedback between two series resistors. This works
fine with unity gain (output tied... Read More
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Scope doesn't show correct voltage? [5 articles]
Janey - 14:06 07-03-08
Scope: Tek 2465
Sig gen: HP 33120
The HP, set to 25 KHz, 100 mV p-p (according to the HP's display).
The Tek, set to 50 mV/div displays the signal as 4 divisions peak-to-pea... Read More
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What size fuse to use? [3 articles]
Butter - 13:56 07-03-08
I've got a solenoid with 8 ohms of resistence. Its AC and don't know
where to go to find out how I'd determine what size fuse I'd need. And
where would I go for single phase mot... Read More
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Help with 12 volt rocket igniter [16 articles]
ULB - 03:31 07-03-08
Hi all,
I was looking into building a simple (but hopefully cool) model rocket
igniter. Yeah I'm bored, but stupid as a brick. About the only thing
I know about electricity ... Read More
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power on delay circuit [4 articles]
chitta - 17:17 06-03-08
Hi
my name is chittaranjan.
I need a waveform with power on as follows
1.HIGH for 1 sec
2. LOW for 2 sec
3. HIGH permanently
Please help me obtain this waveform without... Read More
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M3 Semiconductor Analyzer kit?
Satoru Uzawa - 14:48 06-03-08
Dear all,
Do you have any opinion on M3 Semiconductor Analyzer kit?
http://www.m3electronix.com/kit.html
It looks nice to me.
Thanks a lot for your inputs!
... Read More
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Help understanding circuits [2 articles]
AJ - 10:29 06-03-08
Hi,
I was wondering if someone might be able to answer some questions on the
following video transmitter circuits...
http://www.ajpotts.fsnet.co.uk/Circuits.html
1. In t... Read More
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unused analog switch sections [3 articles]
Brett Holden - 09:05 06-03-08
Hello, All!
I am trying to design a PI metal detector. I need some advice on what to do
with unused I/O pins on a quad analog switch. I need to use two sections of
DG411. Now, ... Read More
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Phase shift [13 articles]
Ahmad - 06:47 06-03-08
Hello ,
i am trying to combine or mix three signals with the same frequency
together in one channel. i have no idea hw i can do that. The signals
are sin waves. I think if i chn... Read More
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