Saturday, January 14, 2012

Schematic

I have learn how to properly read an circuit schematic. Below is a picture of probably my favorite arrangement in thus far. It is called a 'darlington' arrangement named after the electrical engineer Sidney Darlington.
Let me prove I know how to read this schematic. Coming off the positive rail a diode and an output device( d/c motor, LED, etc) are connect in parallel to the collectors of two different transistors. The 2N3904 transistor base pin receives a signal coming from a pin connect to a micro processor maybe through a 1,000 ohm resistor. This transistor then emits to the base pin of a TIP41 transistor which then emits into the ground rain of a circuit. Here is what the circuit looks like on a breadboard.
As I stated earlier, this is my favorite circuit thus far because it gave me such a problem when i started playing with different output devices. I now know how to create a Darlington arrangement without any schematic help!

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