General Electronics

cyrix 586 mainboard

good day! i have a problem with my cyrix 586 mainboard. When i turn it on, it sounds one beep, displaying BIOS logo, ru...

2 comments posted 21yrs

posted by cheian07

2 comments posted 21yrs posted by cheian07

Electric Potential & Electric Field

Voltage is said to be the difference between the electric potential between two poles of a battery. What is the relatio...

4 comments posted 21yrs

posted by lorrainewinters80

4 comments posted 21yrs posted by lorrainewinters80

Replacement for Garmin GPSV?

I use my GPSV mainly while motorcycling, and car, but sometimes wnile walking. =20 Some things I'd like to hold over fr...

2 comments posted 21yrs

posted by dwarner22

2 comments posted 21yrs posted by dwarner22

simplest DC to AC circuit

Hi, I wanna convert the 12 volts DC in my car to AC 110 volts 60 Hz so I can use my appliance inside the car, what's th...

4 comments posted 21yrs

posted by lorrainewinters80

4 comments posted 21yrs posted by lorrainewinters80

Protel99SE Default designator text height

When I update the PCB from schematic the designator text height is set to 60mils. I have changed the default in prefere...

0 comments posted 21yrs

posted by Fred

0 comments posted 21yrs posted by Fred

Power supply question

I've "inherited" an ESI-2841 network print server, but the AC adapter is missing. It's been about 15 years since I've b...

2 comments posted 21yrs

posted by ted.wood

2 comments posted 21yrs posted by ted.wood

Alternating Current

Suppose you have a 10 meter long wire, does the current alternative (rise or fall) at the same time in the entire stret...

21 comments posted 21yrs

posted by lorrainewinters80

21 comments posted 21yrs posted by lorrainewinters80

shorting current

Hi, Supposed you have a dc source of 1 ampere and you short it... from I=V/R, R=0, what then is the current produced??...

6 comments posted 21yrs

posted by lorrainewinters80

6 comments posted 21yrs posted by lorrainewinters80

FA: Vintage American Optical AO 3100 Helium Neon LASER

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=361&item= 6534618433&rd=1 Thanks for looking! --Gene

0 comments posted 21yrs

posted by first.last

0 comments posted 21yrs posted by first.last

Need an inexpensive electric field mill for a project

Working on a little hobby project and have decided I need an electric field mill to make some measurements. Since this...

0 comments posted 21yrs

posted by dont

0 comments posted 21yrs posted by dont

FS or Trade: Schroff Desktop Rack Cabinet

Trade or FS: Schroff Desktop Rack Cabinet 19 inch Desktop Rack Cabinet - (12 inch enclosure depth, 300mm usable depth)...

0 comments posted 21yrs

posted by Invalid

0 comments posted 21yrs posted by Invalid

ADC MCP3304 howto increase input voltage up to 20V (default 5V)

Hi everyone, I'm using an ADC Microchip MCP 3304c, this converter has max input analog voltage = 5V, but i must measure...

1 comments posted 21yrs

posted by gjakubow

1 comments posted 21yrs posted by gjakubow

Cold soldering

So are these "cold soldering irons" the perfect tool for cold solder joints. Really though has anyone experienced one of...

4 comments posted 21yrs

posted by spam

4 comments posted 21yrs posted by spam

Press-n-Peel

I am using the Press-n-Peel blue for me to do my PCB, and I appreciate a lot, however I would like to know if there is s...

1 comments posted 21yrs

posted by fjpc60

1 comments posted 21yrs posted by fjpc60

electrical relay vs mechanical relay

Just a very basic question: Can anyone share with me what's the benefit of using transistor as an electrical relay comp...

1 comments posted 21yrs

posted by albertleng

1 comments posted 21yrs posted by albertleng