Become a subscriber (Free)

Join 29,000 other subscribers to receive subscriber sale discounts and other free resources.
:
:
Don't worry -- youre-mail address is totally secure. I promise to use it only to send you MicroZine.

The most useful electronic schematic symbols

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, diode.

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.

Schematic symbols for passive devices:

resistor schematic symbol Resistors
thermistor schematic symbol Thermistor  

or temperature dependent resistor
preset schematic symbol Presets

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.
variable resistor schematic symbol Variable resistors

Proper panel mount units with a  metal or plastic spindle - plastic is easier to cut.
light dependent resistor schematic symbol Light dependent resistor
capacitor schematic symbol Capacitors
electrolytic capacitor schematic symbol Electrolytic capacitors

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!
variable capacitor schematic symbol Variable capacitors

These are the ones on a transistor radio 265pF (or larger for older radios).
trimmer capacitor schematic symbol 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.
inductor schematic symbol Inductor  
diode schematic symbol Diode 
zener diode schematic symbol Zener Diode
diac schematic symbol Diac
bell schematic symbol Bell
buzer schematic symbol Buzzer 
diode schematic symbol Fuse 
lamp schematic symbol Lamp 
loudspeaker schematic symbol Loudspeaker 
microphone schematic symbol Microphone
transformer schematic symbol Transformer
crystal schematic symbol Crystal
LED schematic symbol LED
Light detecting diode schematic symbol Light detecting diode
volt bar power supply schematic symbol Volt bar (power supply)
chassis GND schematic symbol Chassis GND
normally open switch schematic symbol Normally open switch
normally closed switch schematic symbols Normally closed switch
spdt switch schematic symbols Switch SPDT

Schematic symbols for active devices:


transistor NPN,PNP schematic symbols
NPN,PNP transistior
fet N,P channel schematic symbols FET N,P channel 
MOSFET N,P channel schematic symbols
MOSFET N,P channel
darlington schematic symbols Darlington  
thyristor schematic symbols Thyristor  
diode schematic symbols Triac  
xenon tube schematic symbols Xenon tube  



Jump from schematic symbols to
Best Microcontroller Projects Home page.

New! Comments

Have your say about what you just read! Leave me a comment in the box below.



Privacy Policy | Contact | About Me

Site Map | Terms of Use



Visit our Facebook Page:
To Visit Click Here


Recent Articles

  1. ESP8266 Arduino IDE setup.

    Easily use an ESP8266 with the Arduino IDE and program your first sketch into the ESP8266

    Read more

  2. AD9833 a versatile easy to use signal generator on a chip

    Find out how to use the AD9833 to generate sine, square and triangle waves at 0.1Hz resolution.

    Read more

  3. Arduino map - map a value from one range to another

    Arduino map is a useful function but it may not do what you expect. Find out here how to use if correctly.

    Read more

  4. Arduino joystick tutorial: how to setup and use one on the Arduino

    How to test and use an Arduino Joystick including a new library to make it super easy.

    Read more

  5. Digispark Attiny85 Easy IDE install and setup

    Digispark ATtiny85: Essential information on setting up and using this tiny, but powerful, chip

    Read more

  6. Arduino Ide

    How to use the Arduino IDE: Beginners programming course.

    Read more

Readers Comments

"I wanted to thank
you so so so much
for all the information
you have provided in
your site it's

SUPERB and FANTASTIC."

- Ranish Pottath

"This site really is
the best and my favorite.
I find here many useful
projects and tips."

- Milan

bursach<at>gmail.com<

"Awesome site,
very, very easy and nice
to navigate!"


- Matt
matt_tr<at>
wolf359.cjb.net


Learn Microcontrollers

"Interested in
Microcontrollers?"

Sign up for The
Free 7 day guide:

FREE GUIDE : CLICK HERE


"I am a newbie to PIC
and I wanted to say
 how great your
site has been for me."


- Dave

de_scott<at>bellsouth.net

"Your site is a great
and perfect work.
congratulations."


- Suresh

integratredinfosys<at>
yahoo.com

"I couldn't find the correct
words to define
yourweb site.

Very useful, uncovered,
honest and clear.

Thanks so much for
your time and works.
Regards."


- Anon

Back to Top