7
votes
3answers
279 views

Use of ground symbols in circuit diagrams

In this question is the following diagram for a voltage booster intended for small battery powered devices The TPS61200 spec says GND is control/logic ground and PGND is power ground but this isn't ...
5
votes
4answers
886 views

components within a triangle in an electronics diagram

I'm trying to understand the following circuit diagram: Specifically, the four triangles within the L293D component. So I understand there are two transistors in there, connected in series from 24v ...
4
votes
2answers
747 views

Newbie: resistor and capacitor symbols meaning

I found a project I'm interested in on the Internet ( http://linnix.com/udip/ ). However, I'm a total beginner to electronics, and I'm not sure about the values of the elements as described in the ...
3
votes
1answer
612 views

Is there a set of standard symbols for connectors / wires / protocols?

I am attempting to convey via a diagram how a number of devices are to be connected. In this specific problem: A cable connects to the Queuing Controller via an RJ11 connector The other side of the ...
3
votes
4answers
313 views

BlinkM temperature indicator

I want to build a BlinkM as a simple temperature indicator as seen at http://thingm.com/products/blinkm/project-gallery.html Anyone know where I can get a schematic & parts list? The link on the ...