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Re: SS7/C7
ss7 is a telephony protocol which is used in interconection between the varius parts of a PSTN or a GSM swicht (MSC)
check wikipeadia for a brife intro or go to any SS7 signaling refrence .
regards,
hi all
i am a telecom engineer from iraq i hope if anyboady could tel me what is the opportunity to find a job in europe, so i could get out of iraq
i have a good expearince in installing, configuring & troubleshooting varius comm. systems like GSM, CDMA, WiMAX, fixed microwave links...
hi
i need to design circuit to reviers the direction of 3ph induction motor by using contactors, is it beter then using soldstat devices? any resorces will be helpfull
i need any contactor circute ebook , datasheet or website too
thnx
powersys
man if u want to be shore of ur formula u should use Fourier analysis to prove ur equations and u sould analyse the input & output voltages and currents and also u should analyse for harmonic distortion causit effect the input power factor
regards
sir
every UPSb had a battrey usualy 12 volt lead aced battrey so u could easlly conect
the fan terminals to the bat battry with resect to the polarty
regards
in wireless lan there is transmit and recive intervals so how could i seperat between Tx and Rx periods? so if i swicht it between tx and rx periodicaly the link will be half duplex ? half the speed of the original linke
thanks for your helpe
schematic ne6510179a
i need to build a 2.4Ghz wireless LAN amplifier for wi - fi aplications and i need help
i wonder if anybody have a schimatic or circuit digram
any idea will be helpful
regards
Re: physically how virtual short of the opamp can be explain
let's say ideal opamp which have 2 inputs (negative & posetive) and one output
and the output voltage = (v2 - v1)*A
where:
v2; posetive input voltage
v1; negative input voltage
A ; is the gain of the opamp
so (v2 - v1) = Vo /...
how to check a rectifier
the regular four terminal rectifier consist of 4 diodes connected as a bridge u should check every diode by the ohm meter , four every adjucent terminal check the for forward and backward baising(forward short & backward open)
regards
Re: Req: WLAN antenna
https://www.dlink.com/products/category.asp?cid=1&sec=0
go to the botom of this page
i think u should use the flat panal antenna 18dB or yagi 18dB antenna & 9 meter cable for best performance
the antenna pac come with a pigtal
d-link is the best in this stuff
regards
sir
if the output of your tv is video signal and audio signal saperated (not rf signal) u will need to remodulate the signals and bourdcast them to the other tv
i suggest u could use an old vcr mixer/modulator box u gust need to feed it with the vedio and audio signal and its power will be...
Re: line following robot
i think it will be easyer if u used a LED and photosensors, the reflection of the LED light from the dark line will be differ from other places so some of the photosensor will riceev less light then others and u could determin the direction of the line
i fownd that in...
i think u beter use a buffer chip like 74lh244 or use max232
i think 74lh244 is faster
and u could use a resistors divider for supply voltage cuse its not draining high current and there is no bige power dispathion in the resistors
regards
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