science-notes/source/electronics/components.rst

Components
===============

Two types of electronic components:
	1) Active: Source of energy (includes amplifying components such as transistors).
	2) Passive: Cannot introduce energy into the circuit.

.. note::
	You can design svg circuits using the `Electrical Symbols Library <https://upload.wikimedia.org/wikipedia/commons/6/6a/Electrical_symbols_library.svg>`__:

	.. image:: figures/esl.svg
		:align: center
		:width: 200px

Generators
----------------

.. include:: esl.rst

There are two important generators to know:
	1) Current generators |igen_c| that strive to maintain constant current on his terminals. Arrow must point towards the current direction (`source <https://ultimateelectronicsbook.com/labeling-voltages-currents-nodes/>`__).
	2) Voltage generators |igen_v| that strive to maintain constant voltage on his terminals.

Resistors
-------------
Two ways of connecting resistors: 1) series 2) parallel

Series
~~~~~~~
.. image:: figures/resistor_serie.svg
	:align: center
	:width: 130px

Equivalent resistors is simply :math:`R=R_1+R_2`.

Parallel
~~~~~~~~~~~~

.. image:: figures/resistor_parallel.svg
	:align: center
	:width: 100px


Equivalent resistors is :math:`\frac{1}{R}=\frac{1}{R_1}+\frac{1}{R_2} \Rightarrow R = \frac{1}{\frac{1}{R_1}+\frac{1}{R_2}}`.
With only two resistors, it is simply :math:`\frac{R_1R_2}{R_1+R_2}`.