ME-03-Analog Electronics - Useful schematics:
4.-Transistor as a switch.One of the most important configurations is using a transistor as a switch to activate and deactivate another higher power circuit or device with a lower control pulse, for example, activating a high power motor using a low power microcontroller.
Nonetheless you must be careful as the grounds must be connected, (so microcontroller ground will interact with device's ground) and it may result in damage to the low power circuit or strange behaviour if its sensible to noise or the output needs more power than the control device can manage. |
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The documentation.And for ease of practicality here's the document with all the schematics!
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