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Identifying circuit component (schematic)

Apocaloptigon

Jun 23, 2018
15
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Jun 23, 2018
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15
You can tell what I'm trying to make, but I don't know what those up-arrows resemble. I circled them in red.
Drawing.jpeg
What do they mean?
 

Minder

Apr 24, 2015
3,247
Joined
Apr 24, 2015
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3,247
Simply means these point to the power source 12v to 50v 8a and 9v to 18v, whatever the source maybe.
The commons of the supply are connected together. Bottom of D2 & Q1 & C2.
M.
 

Apocaloptigon

Jun 23, 2018
15
Joined
Jun 23, 2018
Messages
15
Thanks, I got most of that down, but what do you mean by the commons of the supply are connected? Is it single terminal or double terminal?
 

Minder

Apr 24, 2015
3,247
Joined
Apr 24, 2015
Messages
3,247
It means the negetive side of each of the supplies are common (connected) to each other, one connection.
However way you want to do it, either by printed circuit or hardwired..
M.
 
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