Basics of Electronics - Electronics is the study of the antics of electrons, for that first a bit of static electricity which is the way non moving electrons behave.
Tables, charts, quick reference cards, booklets and handbooks; are the most versatile tools of learning and putting the learning into applications. These should not have a lot of language or flowing text. These are - to the point, easy to remember, graphical, colorful (memory aid).
Electronic Tables and Charts
Just like a circuit diagram, flow chart or ladder logic can graphically interface with a human mind, Tables and Charts easily embed into ones memory.
Electronic Tables and Charts
Just like a circuit diagram, flow chart or ladder logic can graphically interface with a human mind, Tables and Charts easily embed into ones memory.
Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles. - Creator - Simon Field
Science Toys - Edutainment at Home
This Website is a valuable resource for students to learn basics and get interested in electronics and computers - delabs
Electromagnetism: - An electric motor in 10 minutes
The motor is simply a battery, a magnet, and a small coil of wire you make yourself. There is a secret to making it (which I will of course share with you) which is at the same time clever and delightfully simple.
Other Projects - Fun with High Voltage, A 10 minute railgun, A 30 second motor.
The reason a crystal radio does not need any batteries is the amazing capabilities of the human ear. The ear is extremely sensitive to very faint sounds. The crystal radio uses only the energy of the radio waves sent by radio transmitters.
Others are Building a radio in 10 minutes, Build a portable crystal radio, A radio out of household items, A simple AM transmitter, The Three-Penny Radio.
In this project we will build a very simple radio transmitter that you attach to a serial port on your computer. The computer then runs a free program that converts words you type into radio signals that are decoded by another computer, using a cheap radio receiver, and a sound card.
More - A Free Space Laser Data Transmitter, Fun With Solderless Breadboards, A Simple 1 Watt Amplifier
Science Toys - Edutainment at Home
This Website is a valuable resource for students to learn basics and get interested in electronics and computers - delabs
Electromagnetism: - An electric motor in 10 minutes
The motor is simply a battery, a magnet, and a small coil of wire you make yourself. There is a secret to making it (which I will of course share with you) which is at the same time clever and delightfully simple.
Other Projects - Fun with High Voltage, A 10 minute railgun, A 30 second motor.
The reason a crystal radio does not need any batteries is the amazing capabilities of the human ear. The ear is extremely sensitive to very faint sounds. The crystal radio uses only the energy of the radio waves sent by radio transmitters.
Others are Building a radio in 10 minutes, Build a portable crystal radio, A radio out of household items, A simple AM transmitter, The Three-Penny Radio.
In this project we will build a very simple radio transmitter that you attach to a serial port on your computer. The computer then runs a free program that converts words you type into radio signals that are decoded by another computer, using a cheap radio receiver, and a sound card.
More - A Free Space Laser Data Transmitter, Fun With Solderless Breadboards, A Simple 1 Watt Amplifier
These circuits are based on CD40xx Chips and other. You can use
74HCT or any other series that is available. use one family for a
particular project. These were used nearly two decades ago. Use it for
learning, glue logic or to interface your uC designs to external
devices. Do not make only Logic based designs like some below. It would
be better to use a uC, CPLD or FPGA if you are building a complex
gadget Basic Digital Circuits
Digital Circuits - delabs
LM331 is a Voltage-to-Frequency Converters and 74C926 is a 4 Digit Counter. The first part of the circuit converts the amplified DC analog value from a shunt to pulses. The Second counts the pulses and Displays it on a Seven segment LED display.
Digital Timers, Counters and Clocks
Digital Circuits - delabs
LM331 is a Voltage-to-Frequency Converters and 74C926 is a 4 Digit Counter. The first part of the circuit converts the amplified DC analog value from a shunt to pulses. The Second counts the pulses and Displays it on a Seven segment LED display.
Digital Timers, Counters and Clocks
- Sequential Timer CD40xx
- Sequential Timer 7217
- Six Digit preset counter CD4518
- Analog timer CD4541
- Quad Presettable Timers
- Digital Comparator 74HC85
- Sequential Timer/counter 7217 with RAM
- CD4060 and CD4020 based long duration timer.
- Digital Timer Clock With Preset using Thumbwheel switch.
- 1 Hz or 1 pps crystal clock using CD4060 and 32768 Hz Crystal
- Optical Proximity Switch
- Profile Controller
- Toaster timer 555
- Quad analog input switch logic
- Optical switch for water tap using LM555 and LM567
- Diff input DS8830 to TTL convertor
- Phase lock loop using 4046
- Am hour meter for battery chargers or electroplating equipment. 74C926
Here are circuits made of Resistors, Capacitors and Inductors which
are passive components. Crystals, Thermistors, Varistors, Variable
Passive RLC are also Passive Parts.Some circuits documented from my
design note book are here with the editable schematics.
Circuits using only discrete devices
Zeners, Diodes, NPN-PNP Transistors, FET, MOSFET, SCR, Triacs are all discrete active devices. ICs and Hybrid Modules are made of many discrete and passive components.
In the Integrated Circuits or ASICs, all parts even passives are derived on the Silicon Wafer. In Hybrid Modules the construction uses SMD or Tiny Chip components interconnected in a small ceramic PCB and Hermetically Sealed if needed.
For a Systems Integrator or Control Panel Designer, the Timers, Controllers, PLC which are Electronic Products become Components or Modules along with Contacters, Current Transformers, AC-DC Drives etc.
Circuits using only discrete devices
Zeners, Diodes, NPN-PNP Transistors, FET, MOSFET, SCR, Triacs are all discrete active devices. ICs and Hybrid Modules are made of many discrete and passive components.
In the Integrated Circuits or ASICs, all parts even passives are derived on the Silicon Wafer. In Hybrid Modules the construction uses SMD or Tiny Chip components interconnected in a small ceramic PCB and Hermetically Sealed if needed.
- Isolated dual power supply from 5V
- Telephone LED status indicator
- Music Sound to light converter
- Simple Water operated relay
- LED Voltage Level Indicator
- Basic Relay or Solenoid Driver
- Mains Voltage Current LED Indicators
- Triac based Lamp Dimmer power control
For a Systems Integrator or Control Panel Designer, the Timers, Controllers, PLC which are Electronic Products become Components or Modules along with Contacters, Current Transformers, AC-DC Drives etc.
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