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Re: need help in Power Supply
To get 24V DC, you need a transformer which will have a peak (with reference to zero) voltage of just over 24V on the secondary (output). The ammount over depends on whether you're using a two or four
By Tavys Ashcroft <bigtex@...> · #62 ·
Need info on Selectronics or other mfr of the SB100 "Sound Bridge" FM transmitter
Need info on Selectronics or other mfr of the SB100 "Sound Bridge" FM transmitter There used to be a mini FM transmitter made by Selectronics called the "Sound Bridge" model SB100. I would like to
By Ed Miller <coolcreek.geo@...> · #61 ·
need help in Power Supply
we have a fax machine that is always busted whenever there's a power surge,so I suspected that the power supply of the fax machine is not regulated..instead of fixing it I decided to make one. but the
By reniar@... · #60 ·
Re: new one
Have you tried the http://groups.yahoo.com/group/electronics group? I am a member of more than one group (if one group can not answere a question, perhaps another [of the same type]can?).
By Thomas Lee Mullins <tomleem@...> · #59 ·
new one
Hello guys, Im Buknoy,recently subscribe in this group. Im a Electronics Technician for a quite sometimes now and I want to enhance my knowledge in electronics.,I hope this group will be a great help
By reniar@... · #58 ·
Re: IC's?
checkout www.icmaster.com to find who makes the IC. Then go to the manufacturer website. =] matt hill --- Zach Archer <slander@...> wrote: __________________________________________________ Do
By Matt Hill <matthew_e_hill@...> · #57 ·
multimeters' funcionality testing jig
I need to build a jig using an AC source from outside to see if a multimeter is functional. Have to design it to be able to test resistance, cap, current both AC and DC, voltage, diodes. Does anybody
By m_jozsef@... · #56 ·
More transformers...
I generated low-level AC voltage using a sound program on my computer -- I looped a 60 hz sine wave, and ran it through my mixer for amplification, and then into the transformer. On this side, the
By Zach Archer <slander@...> · #55 ·
Re: Evaluating a transformer?
Zach, try AC voltage, Good Luck, Steve
By steves@... · #54 ·
Re: IC's?
Well, aside from just looking up the part number on google, there's: The Chip Directory http://www.embeddedlinks.com/chipdir/ and Semiconductor Cross Reference Search http://www.nteinc.com/cgi-bin/nte
By Tavys Ashcroft <bigtex@...> · #53 ·
Re: Evaluating a transformer?
Well there's your problem right there. Transformers only work for AC. It's inductive coupling. As the primary's voltage goes up and down, a magnetic field expands and collapses. This magnetic field's
By Tavys Ashcroft <bigtex@...> · #52 ·
IC's?
Oh yeah -- I also got a few IC's in the package. Is there a directory (online or otherwise) that can identify their function, and (hopefully!) indicate what the pins do? Thanks -- Z
By Zach Archer <slander@...> · #51 ·
Evaluating a transformer?
Greetings all, I won a small box of assorted electronic components on eBay, which arrived today. I'm still trying to evaluate + test all of them, but I have a question regarding transformers. The box
By Zach Archer <slander@...> · #50 ·
Re: Thelephone line modulation with tv signal
The audio bandwidth over telephone connections is too low to support full-motion video. However, amateur radio operators have been sending color pictures over the airwaves using the small audio
By Barry Hansen <coilgun@...> · #49 ·
Re: Thelephone line modulation with tv signal
Well, first you should learn a bit about the nature of a video signal, and the frequency response of telephone systems. The audio in telephones is of a very limited band. Something like 500-3000 Hz
By Tavys Ashcroft <bigtex@...> · #48 ·
Re: Thelephone line modulation with tv signal
oh, btw, they sell things for old tv's that have a coax to a two wire split forked piece that you screw down... I've got one for an old console that's not cable ready. They're real common. Considering
By nKode <pulse8@...> · #47 ·
Re: Thelephone line modulation with tv signal
what's wrong with using a coax?! Joshua ---- "A meow massages the heart." nKode / Pulse 8 - aim:jkerseyVCSO http://www.goodtimetribe.com http://www.mp3.com/stations/d-r-e-a-m
By nKode <pulse8@...> · #46 ·
Thelephone line modulation with tv signal
I want to send a video by telephone line, but i dont know how to start im lookin for a circuit that modulate the telephone line with a viedo sinal and at the other end it demodulate to see this imagen
By ramiroi@... · #45 ·
Re: D/C speed control
Well, you could do some experiments with pulse width modulation. I hear that is used quite a bit for pulse DC motor control. You can make this with a 555 timer circuit like this:
By Tavys Ashcroft <bigtex@...> · #44 ·
Multi code DVD????
Can Any one give me Any info on how to mod DVD players so they are multi code????? )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( The Sinister Dragon Hey, Just because I'm EVIL, Doesn't make
By peter tremewen · #43 ·