Italian pulse detector Nuova-elettronica-245

[6666]

I'm having a hard time locating all the needed parts because some are old and obsolete and I couldn't find a proper replacement.
It also does not mention what are the values of the toroidal transformer so this project is most likely obsolete, unless someone finds alternative parts or ways to complete the project.

Although I'm almost done on the schematic redrawing it seems pointless to continue at this point.

If someone is interested on continuing the schematic, you will find it on EasyEDA.com with project title "Rivista Nuova Elettronica #245".

When logged in to EDA I get permission denied

[MDfanatic]

Sorry about that mate, here is the correct link:
https://easyeda.com/MDfanatic/rivist...lettronica-245

But as I stated, I haven't completed the schematic due to the lack of replacement components (I haven't finished the IC connections), If anyone could suggest alternatives for the following components I will finish it and build a proper PCB and if it works out OK I will make an SMD version with the power supply and everything else on a single PCB.

ATM I can't find a proper replacement for these components:
1N4150
LM6218
2N5247
BYW100

[bernte_one]

I am drawing the board now the transformer is no biggy just needs plus and minus 12v many ways to generate that i have ordered the TDA7052-B from Aliexpress I asked for the correct one hopefully i get it. LM6218 is only sticking point and i am not sure why they went all exotic with that only works at 67hz according to the text, i will try substitutes the rest is not a problem.


was done in a rush not yet checked properly a second opinion would be helpful.

[ATTACH]53895[/ATTACH]

can you attach the sprint layout file in a rar or zip container, thx

[bernte_one]

1N4150 --> LL4150
LM6218 - no plan its a 14pin dual opamp it think some 8pin dual opamp or good enough too (some changes in pcb layout necessary)
2N5247
BYW100 --> 1N5819 / 1N5393

[dom44]

I have already made some corrections on this but needs more checking. and the LM6218 is a standard 8 pin dual op amp it is shown under the parts list. same connection as TL082

https://gofile.io/d/5bb0I3

[surfdetector]

I have already made some corrections on this but needs more checking. and the LM6218 is a standard 8 pin dual op amp it is shown under the parts list. same connection as TL082

The gain bandwidth of the LM6218 is substantially different from the TL082

[bernte_one]

lm6218 17mhz -> LT1357 20mhz

[surfdetector]

lm6218 17mhz -> LT1357 20mhz

The LM6218 is 2 channel

The LT1357 is 1 channel

[dom44]

I was not saying to substitute the TL082 for the LM6218 I am saying it has the same pin connections makes it easy to plug and play with other chips that could be suitable that is all in most PI detectors they use the NE5532 low noise to amplify the coil pulses in that part of the circuit, that may work would have to try it.

[surfdetector]

I was not saying to substitute the TL082 for the LM6218 I am saying it has the same pin connections makes it easy to plug and play with other chips that could be suitable that is all in most PI detectors they use the NE5532 low noise to amplify the coil pulses in that part of the circuit, that may work would have to try it.

I apparently misunderstood your statement. My apologies.

[6666]

Sorry about that mate, here is the correct link:
https://easyeda.com/MDfanatic/rivist...lettronica-245

But as I stated, I haven't completed the schematic due to the lack of replacement components (I haven't finished the IC connections), If anyone could suggest alternatives for the following components I will finish it and build a proper PCB and if it works out OK I will make an SMD version with the power supply and everything else on a single PCB.

ATM I can't find a proper replacement for these components:
1N4150
LM6218
2N5247
BYW100

Thanks for the link, yes it works now, I am trying to figure out what you did
have you imported a picture and are you superimposing the new schematic over it ?

[6666]

Had a quick look at the 1N4150.
The 1n4148 is very close , even better and should work the same

I cannot see a BYW100 in the parts list

The 2N5247 and LM6218 are on ebay

The LM6218 has some fancy specs, I would try a NE5532 in place of the LM6218, just to get it working

[bernte_one]

The LM6218 is 2 channel

The LT1357 is 1 channel

then LT1358 sorry

[dom44]

the board finished i checked it unless i missed something should be correct according to schematic.

https://gofile.io/d/DUaKF5

[MDfanatic]

have you imported a picture and are you superimposing the new schematic over it ?

Exactly.