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tsikscar
Apprentece

United Kingdom
23 Posts
Posted - Jun 20 2013 :  4:39:56 PM  Show Profile  Reply with Quote
Can someone help me with the symbols shown in the attached circuit, arrowed 1 and 2. i thought one of them was a symbol for twisted pair. I am not sure of the dashed circle with the arrowed connections on the group of cables. Are the components on the left opto-isolators? It's better to admit you don't know than to remain ignorant.
Also what sources can i use to get the meanings of such symbols. Thanks.

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Aaron Cake
Administrator

Canada
6718 Posts
Posted - Jun 22 2013 :  10:28:55 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
1 symbolizes that all those wires run within one cable.

2 is a mystery to me. I've never seen it in all my years.

I have a good schematic symbol reference here:
http://www.aaroncake.net/electronics/schem.htm
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pebe
Nobel Prize Winner

United Kingdom
1078 Posts
Posted - Jun 22 2013 :  12:18:03 PM  Show Profile  Reply with Quote
2. may show that the input to the transistor base is a ramp or a triangular waveform.
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