ElectricVLab comes with the following pre-built circuits. They have been chosen so as to provide a walk through the core concepts and components of analog and digital electronics.
Ohm’s Law and Resistors
- Ohm’s Law
- Resistors in Series
- Resistors in Parallel
- Simple Fireworks Circuit
to Explore Ohm’s Law (Watch video)
- Voltage Divider
- Current Divider
- Net Voltage
Basic Logic Gates
- AND Gate
- OR Gate
- NOT Gate
- NAND Gate
- NOR Gate
- XOR Gate
Resistor Circuits
- Resistors in Series and Parallel – 1
- Resistors in Series and Parallel – 2
- Wheatstone Bridge
- Thevenin Equivalent
- Norton Equivalent
Switches and Fuse
- Distributor Switch (Watch video)
- Staircase Lighting
- Fuse Blow
- Relay Circuit Using Double Pole Double Throw (DPDT) Relay
Resistors connected in series and parallel.
XOR gate behavior. The output of an XOR gate is high when just one of itsinputs is high.
Capacitors, Inductors, and Filters
- RC Circuit
- RC Low Pass Filter
- RC High Pass Filter
- LR Circuit
- LR Low Pass Filter
- LR High Pass Filter
- Voltage Conversion Using Transformer
- Butterworth Low Pass Filter
Diode, Clipping Circuits
- Diode Behavior
- Series Positive Clipper
- Series Negative Clipper
- Shunt Positive Clipper
- Shunt Negative Clipper
- Shunt Positive Side Slicer
- Shunt Dual Side Slicer
- Clipping Around Zero Crossings
Clamping Circuits Using Diode
- Positive Clamper
- Negative Clamper
- Positive Clamper with Positive Bias
- Positive Clamper with Negative Bias
- Negative Clamper with Positive Bias
- Negative Clamper with Negative Bias
Rectifier Circuits
- Half Wave Rectifier without Filter
- Half Wave Rectifier with Filter
- Full Wave Rectifier without Filter
- Full Wave Rectifier with Filter
- Bridge Rectifier without Filter
- Bridge Rectifier with Filter (Watch video)
Push-pull amplifier using NPN and PNP transistors. The biasing diodes have been shorted here by closing the switches across them to see the distortion that happens in their absence.
If you click on the oscilloscope, a window showing an enlarged view of the waveform gets displayed. This display also provides ways to change x and y scales, cursors, and trigger settings.
Bipolar Junction Transistors (BJTs)
- Current Source Using BJT – 1
- Current Source Using BJT – 2
- Emitter Follower
- Common Emitter Amplifier
- Darlington Emitter Follower Using NPN Transistors
- Push Pull Amplifier
Junction Field Effect Transistors (JFETs)
- Common Source Amplifier Using JFET
- Current Source Using N-Channel JFET
- P-Channel JFET as Switch
MOSFET
- MOSFET LED Switch
- Disco Lamps Driven By MOSFETs
- Common Source Amplifier
- NMOS Inverter
- PMOS Inverter
- CMOS Inverter
Operational Amplifier (OpAmp)
- Inverting Amplifier
- Non-inverting Amplifier
- Summing
Amplifier (Watch video) - Differentiator Circuit
- Integrator Circuit
- Triangle Wave Generator
- Notch Filter
- Peak Detector
Decimal counter using JK flipflops. The counter state drives the 7-segment display via a 7-segment decoder.
A 2-to-4 decoder that activates one of the 4 robots.
Digital Circuits : Adders
- Half Adder
- Half Adder with Nand Gates
- Full Adder
- Full Adder with Nand Gates
Digital Circuits : Subtractors
- Half Subtractor
- Half Subtractor with Nand Gates
- Full Subtractor
- Full Subtractor with Nand Gates
Digital Circuits : Encoders, Decoders, Multiplexers, Demultiplexers
- Priority Encoder
- Decoder Circuit Using Logic Gates
- 2-to-4 Decoder Driving Four Robots
- Multiplexer
- Demultiplexer
- Multiplexer using 74126 Quad Tri-State Buffer
Digital Circuits : Flipflops and Counters
- D Flipflop and JK Flipflop
- Frequency Divider Circuit Using D Flipflop and JK Flipflop
- Sequential Firework Display Using Ripple Counter Built with D Flipflops (Watch video)
- Decimal Counter with JK Flipflops. Uses 7-Segment Display to Display the Count.
- Counter that can be configured as both a Hexadecimal Counter and as a Decade Counter (Watch video)
- Johnson Counter
- Water Fountains Driven By Hexadecimal Counter
555 Timer
- Internals of 555 Timer
- Monostable Multivibrator Using 555 Timer
- Astable Multivibrator Using 555 Timer
Analog – Digital Conversion
- Analog-to-Digital Converter (ADC) Feeding into a Digital-to-Analog Converter (DAC)
- Sequencing of Visual Effects Using Analog-to-Digital Converter and Demultiplexers
Astable multivibrator (Pulse generator) using 555 timer.
Adjustable temperature indicator using thermistor.
Sensor Circuits
- Temperature Indicator Using Thermistor
- Adjustable Temperature Indicator
- Darkness Activated LED. Uses Photoresistor to sense the amount of light.
Thyristors
- Behavior of a Silicon Controlled Rectifier (SCR)
- Variable Resistance Phase Control of Silicon Controlled Rectifier
Interfacing Arduino Boards with ElectricVLab
- Switching On/Off the LED on the Arduino Board from ElectricVLab
- Using the Virtual Oscilloscope in ElectricVLab to view the output of a sensor connected to Arduino board.