Learning electronics tutorials for beginners is the primary goal of this site.
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Quick circuits on a breadboard pages:
This is just a handful of the first and easiest topics of the series. Many pages just have a diagram, a video and just one or 2 paragraphs of explanation text. The bottom of each page has links to the next 5 circuits of the series.
- Brief switch controlled indicator LED circuit
- Brief polarity indicator LEDs circuit
- Brief capacitor charge and discharge through LEDs circuit
- Brief capacitor charging RC time constant demonstration circuit
- Brief capacitor discharge RC time constant circuit
More traditional learning electronics pages:
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I write out a lot more important information about components, circuits, and other basic electronics topics on the following pages than in the ones above. I generally assume that you already understand the topics higher up on the list than when I address the topics lower down on the list.
- Electronic component appearance and schematics – Commonly used through hole versions
- Electronic circuit basics
- Voltage sources for electronics basics
- Multimeter measuring voltage
- Resistor component – Learning electronics resistors
- Light Emitting Diodes – Indicator LEDs
- LED circuit -Lighting a Light Emitting Diode
- Resistor limiting current – Ohms law
- Multimeter measuring current
- Wattage – Electrical Power unit
- Resistors connected in parallel
- Series resistors
- Voltage divider – Setting a fractional voltage
- Resistor color code
- Diode – Rectifier
- Trimpot – Trimmer potentiometer – Voltage divider – Variable resistor
- Capacitor component
- Capacitor RC time constant
- Voltage ramp Demonstrated using a capacitor.
- LM334 three terminal adjustable current source not a common component. I use for an easy current source in many circuits.
- Switch NOT logic gate – digital signal inverter
- Switch OR gate – LED circuit
- Switch AND gate – LED circuit
- Switch based NAND logic gate – LED demonstration circuit
555 timer is an integrated circuit (IC). Being an IC, it has complex circuitry combined in a single package with external pins/terminals to connect to other circuitry. You can easily make all kinds of fun circuits with just a 555 timer and the components covered above, so I think it’s a good component to learn next.
- 555 Timer IC The particulars of this integrated circuit covered on this page make a lot more sense after you study the basic circuits that follow.
- 555 timer bistable mode – Flip flip basic circuit
- 555 timer monostable mode – One shot
- 555 timer astable multivibrator mode – Flashing LEDs
- 555 timer schmitt trigger logic inverter – NOT gate
- 555 timer LDR controlled astable multivibrator mode LED flasher circuit
- 555 timer – Buzzer output – Astable multivibrator mode – Light dependent resistor LDR controlled circuit
Transistors will probably be the most challenging components to learn. Understanding them will help you understand all of electronics much better, and help you the most in being creative while designing your own circuits.
- NPN BJT switch circuit – Bipolar Junction Transistor – 2N3904
- PNP BJT switch – Bipolar Junction Transistor – 2N3906
- NPN BJT emitter follower circuit – transferring a voltage minus a diode drop
- PNP BJT emitter follower circuit – Transferring weak signal voltage with a diode voltage shift
- Bipolar Junction Transistor BJT voltage follower circuit improved to eliminate base emitter diode shift
- NPN BJT current source – Bipolar Junction Transistor – 2N3904
- PNP BJT current source – Bipolar Junction Transistor – 2N3906
- Schmitt trigger – NPN BJT
- Zener diode component – voltage reference – regulator
Other topics:
- Voltage doubler circuit fragment- Capacitor charge pump – Some V loss
- 7805 5V positive voltage regulator IC
- Battery voltage state of charge SOC – From fully charged to discharged
These pages are still being compiled.
Always use datasheets to research components:
When you start using components with part numbers, make sure to do a google search for their datasheet. Information on this site is not guaranteed to be accurate. Always verify any electronics information you get by checking the manufacturer’s datasheet.
Unfortunately datasheet aren’t the easiest documents to understand. I am working on explaining how to make reading them easier.
List of Electronics topics:
There’s an almost endless number of exciting electronics topics that can be studied. Below is many of them. I plan to make a page for as many of them as possible. You should always do google searches of any topics that sound exciting.
- Resistors
- Diodes.
- Diodes – Rectifier – LEDs – Zener – Schottky
- N type semiconductor material
- P type semiconductor material
- Capacitors.
- Page 2 capacitor basics – How to use in circuits for DIY beginners learning electronics
- Capacitance.
- RC time constant. Brief capacitor charging RC time constant demonstration circuit
- Voltage ramp. Brief charging capacitor voltage ramp circuit using LM334 current source
- Smoothing.
- 555 timer. 555 timer integrated circuit IC voltages – NE555 – LMC555
- Bistable mode. Brief 555 bistable mode flip flop alternating LEDs circuit
- Monostable mode. Brief 555 timer astable multivibrator mode circuit
- Astable mode. Brief 555 timer astable multivibrator mode circuit
- Schmitt trigger. Brief 555 Schmitt trigger logic inverter
- Transistors
- NPN and PNP bipolar junction transistors (BJTs) Page 4 – Bipolar Junction Transistors BJTs basics
- Switch (transistor based)
- Quick NPN BJT switch circuit – Bipolar Junction Transistor
- Brief PNP BJT switch circuit – Bipolar Junction Transistor
- Brief N channel enhancement mode MOSFET switch circuit – 2N7000 transistor
- Brief P channel enhancement mode MOSFET switch circuit – BS250 E line package
- Current source. Brief NPN BJT current source controlled by trimpot voltage divider circuit
- Brief PNP BJT current source set by trimpot circuit – 2N3906 bipolar junction transistor
- Voltage follower.
- Brief NPN BJT emitter follower set by trimpot using 2N3904 bipolar junction transistor
- Brief PNP BJT emitter follower common collector – 2N3906 bipolar junction transistor
- Brief voltage follower using single supply op amp LM358 operational amplifier circuit
- Zener diode. Brief zener diode component voltage reference and shunt regulator basics
- MOSFET transistors – N channel – P channel – Enhancement – Depeletion
- Brief N channel enhancement mode MOSFET switch circuit – 2N7000 transistor
- Brief P channel enhancement mode MOSFET switch circuit –
- BS250 E line package
- Brief MOSFET as a diode with no forward voltage drop circuit – BS250 P channel enhancement mode
- JFET transistors. Junction Field Effect Transistor – JFET – Brief N channel JFET current sink circuit – J310 constant current source
- Relay
- Darlington pair transistor
- Operational amplifier (Op amp):
- Comparator: Brief LM393 open collector comparator non inverting circuit
- Single supply: Single supply op amp
- Dual supply: Brief TLE 2426 three terminal rail splitter virtual ground component introduction
- Positive feedback:
- Negative feedback:
- Open collector: Open collector output – Discharge terminal
- Non inverting comparator.:Brief comparator circuit using single supply op amp and voltage dividers – LM358
- Inverting comparator: Brief inverting op amp comparator circuit – LM358
- Schmitt trigger. – Hysteresis. – Threshold: Brief Schmitt trigger LM358 op amp comparator circuit
- Analog
- Digital
- Logic gates
- NOT gate
- AND gate
- OR gate
- NAND gate
- NOR gate
- Logic gate integrated circuits (IC)s
- High speed CMOS
- Low Power Schottky
- Battery
- 18650 battery basics
- Battery voltage state of charge SOC – From fully charged to discharged
- Battery capacity – Milliamp hour mAh – Amp hour Ah
- Battery C rate rating explained
- Portable power bank battery packs
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- Information on this site is not guaranteed to be accurate. Always consult the manufacturer info/datasheet of parts you use. Research the proper safety precautions for everything you do.
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