Hi,
Please could some one look at the attached schematic, and tell me what
the symbol in yellow means ?.

Thank you.

Attached Thumbnails

 

 

It's simple an output socket, looks like it may signify a screened one?.

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That means an output socket, with the sheild connected to ground. Something like a phono socket or similar.

Oh, Nigel got there first.

 

It does not suggest screening. It's just a phono socket. Or it can be a BNC socket.

 

A BNC connector is a SCREENED connector.

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Eric " Good enough is Perfect "
I will NOT answer PM's requesting technical help, please use the Forum
PIC tutorials: Nigel's www.winpicprog.co.uk/ Bill's: www.blueroomelectronics.com/

 

Wow !!!
Posted,and replied in minutes. I have loads of downloaded symbols pages from the
web,and the symbol wasn't on any of them.

I come across this symbol problem from time to time, (I am electronics beginner).
Thank you so much.

 

As is a phono socket.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

Of course.

I usually draw a 'screened' type connector symbol with a full circle.

__________________
Eric " Good enough is Perfect "
I will NOT answer PM's requesting technical help, please use the Forum
PIC tutorials: Nigel's www.winpicprog.co.uk/ Bill's: www.blueroomelectronics.com/

 

It is only screened if it is connected to a screened cable

 

The metal case of the BNC is screening the mating connection, if the pcb mounted female part is grounded, which it should be.

So its a 50Ω or 75Ω screened connector when in use, screened cable or not.

__________________
Eric " Good enough is Perfect "
I will NOT answer PM's requesting technical help, please use the Forum
PIC tutorials: Nigel's www.winpicprog.co.uk/ Bill's: www.blueroomelectronics.com/

 

As with every single screened connector that's made - if you fit non-screened cable then it's obviously pretty pointless having a screened connector in the first place.

But as far as BNC goes, unless you use exactly the correct screened cable, it's EXTREMELY difficult to fit a BNC connector.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

Can I add one more description to this pi**ing contest?

It could represent a co-axial connector.

I use the word co-axial to represent an RF type cable rather than just a screened cable, which may be fine at audio frequencies but have excessive loss at RF.

As the circuit shown by the OP appears to be an amplifier for a low (RF) frequency loop antenna, I will stick with my description of co-ax connector as the output is intended to go to the input of a receiver which I guess will have a co-ax socket.

JimB

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Experience is directly proportional to the value of the equipment ruined.

 

Wow, I've seen some interesting arguments here (I know I've started some of em) but this one takes the cake.

__________________

 

Both BNC and Phono sockets are coaxial as well, presumably you're referring to a Belling-Lee connector?. Certainly the fact it hints at been a coaxial connector is why I mentioned it might be a screened socket.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

Exactly.

As the pack had suggested a variety of specific socket types, just for the fun of it I thought I would try and drag it back into a more generic area.

Incidentally, he phono plug/socket is considered to be quite a good socket for RF use, I have seen it used for making connections between modules at 160Mhz (ish) inside commercial radio equipment.

JimB

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Experience is directly proportional to the value of the equipment ruined.