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Phone wiring question [19 articles]
Steven Reynolds - 01:12 05-05-08
I purchased a new home three years ago and I wanted to add an additional
phone jack. In my closet, there's the home "Media Center" behind a panel.
I see that there is a mainbo... Read More
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transistor base input [21 articles]
lerameur - 21:52 04-05-08
Hi all
I have an old analog alarm system. I am hooking up the bell output to
a microcontroller.
Although the output voltage for the bell fluctuates around 6 to 9
volts. I nee... Read More
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12v DC power supply read 18v [4 articles]
Ed - 19:53 04-05-08
I bought a cheap 12v DC "wall wart" to operate a simple LED garage
door open alert. The circuit
has only a microswitch, a 1K ohm resistor, and 12v flashing LED.
However, the p... Read More
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Magnetic Earphones - Series Or Parallel? [2 articles]
Dave.H - 11:17 03-05-08
I am thinking of building a set of earphones for my regen radio, as an
alternative to my extremely uncomfortable antique magnetic earphones.
I found some cheap earphones at Antiq... Read More
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ultrasonic mister [5 articles]
10:09 03-05-08
I am wondering if it is possible to operate a 24vdc mister on 12vdc?
Something simalar to this:
Item: MDC01; DC powered mist maker
Transformer Input: AC110V; Output: DC24V
... Read More
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jessica
anitha - 11:36 02-05-08
Check out our new site! Sexy Hair is cool, hip and edgy with
distinguished brand names including Big Sexy Hair, Short Sexy,
Straight Sexy Hair, Healthy Sexy ...
^^^^^^^^^^^^... Read More
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Garage door alert [19 articles]
Ed - 11:08 02-05-08
I'm in need of a garage door alert so there is a small red light in
the house indicating it's open.
I bought one made by LiftMaster, but it's not quite right for my
situation.... Read More
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AC signal across 12V (DC) halogen bulbs? [2 articles]
allanlewis - 19:48 01-05-08
Hi,
I have a lighting controller circuit using an H-bridge, which produces
a 250Hz signal across a pair of 12V halogen bulbs. (The duty cycle is
controller by a microcontrolle... Read More
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Need to generate sequence 001, 010, 100, 001, 010, 100, ... [20 articles]
jalbers@bsu.edu - 17:42 30-04-08
I am looking for the simplest collection of logic chips that would
produce the sequence 001, 010, 100, 001, 010, 100, ...
I know that a PIC could be programemd to do this.
A... Read More
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Quarternary Logic [2 articles]
Robotnik - 11:34 30-04-08
Hey guys,
I was thinking of a new concept whereby we could
square the amount of information stored in a bit. Currently, the
information stored in a bit is whethe... Read More
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