Schematic Symbol for an Integrated Circuit

 INTEGRATED CIRCUIT

INTEGRATED CIRCUIT 2

IC COUNTER

DEMULTIPLEXER - DEMUX

MULTIPLEXER - MUX

D FLIP FLOP

AND GATE

NAND GATE

OR GATE

NOR GATE

XOR GATE

XNOR GATE

NOT GATE

SCHMITT TRIGGER NOT GATE

OPERATIONAL  AMPLIFIER OP-AMP

MICROCONTROLLER

RASPBERRY PI

RASPBERRY PI MODEL B

RASPBERRY PI MODEL B GPIO

RASPBERRY PI A+ /B+ 2 AND ZERO GPIO

DIGITAL BUFFER

ARDUINO MEGA 2560

RASPBERRY PI PICO

What is symbols are commonly used on circuit diagram ?

FIXED RESISTOR

VARIABLE RESISTOR

POTENTIOMETER

THERMISTOR

LIGHT DIODE RESISTOR (LDR)

CAPACITOR (C)

VARIABLE CAPACITOR

TRIMMER CAPACITOR

POLARISED CAPACITOR

DIODE

ZENER DIODE

LED (LIGHT EMITTING DIODE)

PHOTODIODE

SCHOTTKY DIODE

RAIL

GROUND AND EARTH

DIRECT CURRENT

A direct current (dc) flows in one direction , either steadily or in pulses.:

Current (I)    - The quantity of electrons passing a given point (unit : ampere)

Voltage (V) - Electrical pressure or force (unit : volt)

Resistance(R) - Resistance to the flow of a current, (unit : ohm)

Power (P) - the work performed by a current , (unit : watt)

Potential Difference - the difference in voltage between the two ends of a conductor through which a current flows , also known as a voltage drop.

OHM'S LAW

Ohm's Law Helper Diagram 

A potential difference of 1 volt will force a current of 1 Ampere through a resistance of 1 ohm, or :

V = I x R

I  = V/R

R = V/I

P = I x V (or) I^2 x R

Resistor Networks

SERIES

Rt = Total Resistance

Rt = R1 + R2 + R3

PARALLEL

Rt = Total Resistance 

Rt = [R1 x R2]/[R1 + R2]

PARALLEL (2 or more)

Rtotal (Rt) = 1/ [1/R1 + 1/R2 + 1/Rn]

VOLTAGE DIVIDER 

Vout = Vin x [ R1/(R1 + R2)]

R1 and R2 can be a potentiometer