Electronics Area – Electrical and Electronics Tutorials and Circuits

 

Welcome to Electronics Area

Electrical and Electronics Tutorials and Circuits


Digital Electronics

Semiconductors

Operational Amplifiers

Circuit diagrams & Projects

Transformers

Resistors

Capacitors

Inductors

Electronic Filters

Power Supplies

Electricity and Magnetism Basics

Instruments & Measurements


Recent posts

555 Timer Tester circuit

This 555 IC tester circuit, allows us to make sure that this integrated circuit works properly. This same test can be achieved by operating the 555 as astable multivibrator, but this test does not allow observing its operation in detail.

Capacitor and the Alternating Current

Capacitor and the Alternating Current. Unlike the behavior of a capacitor in direct current (DC), in the alternating current (AC) the current passes more easily through a capacitor.

Audible Logic Probe using the 555 Timer

Many logic probes use LEDs to visually indicate the logic state of the point under test. This causes the user to have to see the point under test and the LED at the same time.

What is a Logic Probe?

A logic probe is a simple and inexpensive instrument contained within a pen-like tube. It has 3 LED indicators that show the status of the point under test. 5 DIY Logic Probes

Ideal Transformer Working Principle

Ideal transformer working principle. How the transformer works. Voltage & current transformation ratio. Power ratio between primary & secondary windings

DC Motor Speed Control with 4049

This DC motor speed controller allows you to vary the speed of small 3 or 6 volt DC motors often found in toys or small electronic devices.

Car Battery Monitor Circuit using 4 LEDs

Car battery monitor circuit using 4 LEDs

This simple Car battery monitor, allow us to know the voltage of the battery at all times. To achieve this 4 leds are placed somewhere on the dash of the car. Each LED has a label indicating the battery voltage at that time.

kWh – Cost of Electric Energy

The unit of measurement used in the electricity bill is the kWh, however in the electrical or electronic products that we buy in stores, the unit of electricity consumption is given in watts or kilowatts.