These schematic symbols were created using ProSchematic a super easy to use
schematic drawing tool (schematic capture tool).
Note: Passive devices are devices
that do not change or amplify voltage or current when another parameter is
altered i.e. they react the same way and when a voltage or current (ac or dc)
is applied a constant output is observed e.g. a resistor, capacitor, inductior,
Note: Active devices are the opposite of passive i.e. they alter their behaviour due to another parameter usualy to amplify (e.g. transistor) but also act as a controlled switch (e.g. thyristor). Another example is the resistance of a fet changing when the gate voltage changes.
or temperature dependent resistor
Those three pin skeleton things that never fit into veroboard and you end up soldering veropins and piggybacking the thing on top!
Really the same as a variable resistor with no case and much smaller.
Proper panel mount units with a metal or plastic spindle - plastic is easier to cut.
|Light dependent resistor
These contain a electrolyte solution and when placed the wrong way round generally explode. These are also the symbols for tantalum which when placed the wrong way round generally smoke!
These are the ones on a transistor radio 265pF (or larger for older radios).
|Preset or trimmer capacitors
These are miniature capacitors either with overlapping vanes (small round) ~65pF or a single plate that is rasied of the other with a screw.
|Light detecting diode|
|Normally open switch|
|Normally closed switch|
|FET N,P channel|
MOSFET N,P channel
Jump from schematic symbols to
Best Microcontroller Projects Home page.
How to use the MCP23017 to increase your I/O by 16 pins (or more) and use its interrupt system.
Arduino Battery Charger: A very useful project that lets you charge 'un-rechargeable' alkaline batteries!
Digispark ATtiny85: Essential information on setting up and using this tiny, but powerful, chip