Search found 9 matches

by tefaelgn
Wed Aug 27, 2014 11:24 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

Re: transmitter & receiver circuit problrm

hello i back again :) i built the PCB for the two citcuit (Tx and Rx)... i can recive the signal but it is very weak ... and looklike a flasher ... when i press the putton in the Tx circuit, the green LED don't emit > but when leave the button the green led emit little light and close . maybe the am...
by tefaelgn
Tue Apr 22, 2014 10:46 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

Re: transmitter & receiver circuit problrm

sorry for the delay.

this is my layout for transmitter circuit
by tefaelgn
Mon Apr 07, 2014 7:30 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

Re: transmitter & receiver circuit problrm

iam sorry i forgot to add this altrnative to the receiver circuit .
by tefaelgn
Mon Apr 07, 2014 1:32 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

Re: transmitter & receiver circuit problrm

ah .. one question for antenna >>>

i can use any wire for it or i should use a specific one ?? i can use the wire of utb cables ?
by tefaelgn
Mon Apr 07, 2014 1:24 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

Re: transmitter & receiver circuit problrm

OK . let's go to the layout and PCB to desgin the two circuit,,,

before that , i want to show you the components that iam soldering it .

for transmitter circuit :
circuit diagram 2 with some variation.png
circuit diagram 2 with some variation.png (48.17 KiB) Viewed 10223 times


for receiver circuit :
by tefaelgn
Sat Apr 05, 2014 9:09 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

Re: transmitter & receiver circuit problrm

power supply for 5v and 9v
power.JPG
and this is power supply for 5v and 9v
power.JPG (34.6 KiB) Viewed 10233 times


and this is the coaxial cable that i used.
coaxeal cable.JPG
and this is the coaxial cable that i used.
coaxeal cable.JPG (91.3 KiB) Viewed 10233 times
by tefaelgn
Sat Apr 05, 2014 9:03 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

Re: transmitter & receiver circuit problrm

this is receiver circuit:
receiver.JPG
receiver.JPG (71.92 KiB) Viewed 10233 times


and this is transmitter circuit:
by tefaelgn
Sat Apr 05, 2014 5:02 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

Re: transmitter & receiver circuit problrm

thx for fast answer i already test it on the simulation program . almost all point that you shown in the explaination for test on oscilloscope appear the same waveform like in your pictures , ONLY one point dosen't operate well , this point is the first point for the crystal , in my simulation the c...
by tefaelgn
Fri Apr 04, 2014 10:21 pm
Forum: Put'm Here
Topic: transmitter & receiver circuit problrm
Replies: 10
Views: 10241

transmitter & receiver circuit problrm

Hello , iam serious to build this circuit and i do that exactely , but it's not work :( i used torid core with 5 turns of magnetic wire has cross section area of 0.5mm .. and replace the 1uH to 5uH ( i can not catch the 1uH so replace it ) and i used 2M ohm insted of 2.2M ohm ... and timer NE555 ins...

Go to advanced search