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Offline ispanyol2
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« Reply #60 on: December 05, 2010, 02:16:00 pm »
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the way it does not work correctly. L7805 LM7805 or to be
regards.

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Offline japanese
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« Reply #61 on: December 05, 2010, 03:30:15 pm »
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 Hi haikel774
             you must revers the pin of L78M05.
             you must have a PIC programmer + HEX file .
       if you connect the LCD  circle bites errors may have occurred for the L78M05,
       Try another one .
best time
j.


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« Reply #62 on: December 07, 2010, 10:45:57 am »
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project seems to be good

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Offline haikel774
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« Reply #63 on: December 07, 2010, 12:29:11 pm »
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HI

THANK YOU Wink.I WILL TRY

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Offline LINE
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« Reply #64 on: December 09, 2010, 09:00:52 pm »
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hey ram, which software i should downlaod theres alot of software in ZEITNITS  i dont know which one

the trouble in my xr71 pro its not wotking i bought it from ebay ebay pre assembled, the first time i turn it on after i assemble everything its sounds continously and no changes in any potentiometer when adjusted, this is a coil attached coil used is 3.2 ohms, 28 turns #20 awg, i tried to remove the coil whith the sound, and the xr71 still sounding and has no changes when potentiometers adjusred. i used a 12v , 7.0 Ah battery. i folloowed all the sellers instruction instructions but evrything is no good. he should have tested it before he sell his item. now im waisting alot of money trying to resolve the problem of this xr71p. now i bought alot of electronic parts to replace the parts of xr 71 one by one. to find out the which component is not working., but i allreasy check the voltages in ic's its all 10.6 but wierd its supposed to be working may be some parts are not working or reverse or may be by tyhe values of components. i am losing interest to make this work may be t will end up to my junk what a waste of money, i should have bought a working unit, for $700.00 i should no problem now

i am thinking building the delta pulse unit i think its more better to start there atleast i can learn step by step parts to parts . what can you advice which delta pulse is working good, how el bombaci DP OR EUGGENE DP

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Offline ramTopic starter
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« Reply #65 on: December 09, 2010, 09:32:12 pm »
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line, did you review the schematic? what pcb did you used? xr71 double sided is tested and works very well and working frequency is 400mhz. for zeinitz download the oscilloscope 1.32 the latest. you have to make test probe.

regards, ram,

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Offline LINE
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« Reply #66 on: December 10, 2010, 02:05:35 am »
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its doublesided pcb the on the right from your attached filed with the pots, my IRF it gets hot but i turned of the power immediately to save the IRF740 i also replaced it with new one 4 times but still gets hot, ami still able to save my IRF?

i removed the transistor goinf to the speaker and test it OK, but when i resolder it, has no more sound. i removed the IRF and place in the big heatsink to make sure it wont get hot again, i also removed the capacito 4700uf and clip it on the wallside of the box.



Posted on: December 10, 2010, 01:36:30 AM
i did checked it but i will recheck it again, i am now downlaoding the software can help me how to make the test probe for thr odvilloscooe
what material and components  needed to build it

Posted on: December 10, 2010, 01:48:20 AM
sorry for misplled

can you give me instructions how to build the oscillocope probe,

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Offline ramTopic starter
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« Reply #67 on: December 10, 2010, 03:07:14 am »
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line,

don't put the irf, you have to chk the transmitter ne556 if working. and the power supply for the receiver circuit is negative 10.6 volts. remember the circuit is positive ground.i have to retrieved my xr71 file, for here's oscilloscope buffer to protect your soundcard.

Posted on: December 10, 2010, 02:58:00 AM
or use this schematic for oscilloscope probe,

Posted on: December 10, 2010, 03:02:25 AM
here's the schematic for xr71, just review it.

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LF 960D FISHER
« Reply #68 on: December 11, 2010, 05:51:12 am »
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i did checked the xr91 components and the schematic from you, it has some components that are not the same

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Offline ramTopic starter
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« Reply #69 on: December 11, 2010, 06:11:27 am »
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Quote:Posted by LINE
i did checked the xr91 components and the schematic from you, it has some components that are not the same

that schematic i posted works well i tried it.

regards, ram.


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