Easy Two Transistor Projects for School Students
A variety of small school projects can be built using just a couple of transistors. This ebook includes a collection of practical and fascinating circuit ideas using just a few […] The post Easy Two...
View ArticleUltrasonic Pest Repellent Circuit
The explained Ultrasonic Pest repeller is a device that generates ultrasound or a very high frequency noise in the range of over 20 kHz which becomes useful for repelling or […] The post Ultrasonic...
View ArticleSimple Voltage Regulator Circuits using Transistor and Zener Diode
Power supply circuits which are designed to produce a stabilized, constant voltage and current output are called regulated power supply circuits. These circuits can be in the form of of […] The post...
View ArticleIC 723 Voltage Regulator – Working, Application Circuit
The IC 723 is a general purpose, extremely versatile voltage regulator IC, which can be used for making various types of regulated power supplies such as: Positive Voltage Regulator Negative […] The...
View Article3 Terminal Fixed Voltage Regulators – Working and Application Circuits
The popular 3 terminal fixed regulators available today are in the form of IC 7805, IC 7809, IC 7812, IC 7815, and IC 7824, which correspond to fixed voltage outputs […] The post 3 Terminal Fixed...
View Article500 Watt Inverter Circuit with Battery Charger
In this post we will comprehensively discuss how to build a 500 watt inverter circuit with an integrated automatic battery charger stage. Further in the article we will also learn […] The post 500 Watt...
View ArticleHow to Make PCB at Home
For any electronic enthusiast making PCBs for an electronic project can be a lot of fun. A printed circuit board or PCB not only helps to build compact circuit projects, […] The post How to Make PCB at...
View ArticleCalculating Transistor as a Switch
Although transistors (BJTs) are popularly used for making amplifier circuits, these can be also effectively used for switching applications. A transistor switch is a circuit in which the collector of...
View ArticleZener Diode Circuits, Characteristics, Calculations
Zener diodes - named after its inventor Dr. Carl Zener are fundamentally used in electronic circuits for generating precise voltage references. These are devices that are able to create a […] The post...
View ArticleFiber Optic Transmitter Receiver Circuit
Electronic signals have been quite successfully sent for decades through standard "hard -wire" connections, or by using radio links of different kinds which had many disadvantages. On the other hand...
View ArticleElectronic Basics Explained
For a beginner to electronics, constructing basic electronic projects from a circuit diagram could be overwhelming. This quick guide is intended to assist newbies by enabling them handy details about...
View ArticleReed Switch Basics
Reed switch can be considered as an ideal low current electrical switch, which can operate with very fast switching times, typically in less than a millisecond. And with around a […] The post Reed...
View ArticleLM4862 Amplifier Circuit – A Better LM386 Alternative
The LM386 based amplifier is still very popular as one of the smallest sized amplifier chips. However, the LM386 is not perfect and has a few drawbacks and limitations. As […] The post LM4862 Amplifier...
View ArticleCar Warning Tone Generator for Ignition, Headlight, Turn Lights
The circuit explained here is basically a warning signal generator designed largely for automobile application. It triggers a warning signal in a situation when the turn indicator switch is not […] The...
View ArticleSimple Kitchen Timer Circuit – Egg Timer
A kitchen timer is a useful gadget which produces an alarm sound after a predetermined delay, as set by the user for specific time based food recipes that must be […] The post Simple Kitchen Timer...
View ArticleGadgets to Protect Women from Assaults and Harassment
Gadgets and devices that are specially designed to repel or deter a potential male offensive can be used by a girl to protect herself from a crime situation, and therefore […] The post Gadgets to...
View ArticleSolid State Relay (SSR) Circuit using MOSFETs
SSR or Solid state relays are high power electrical switches that work without involving mechanical contacts, instead they use solid state semiconductors like MOSFETs for switching an electrical load....
View Article1 Hz to 1 MHz Frequency Reference Generator Circuit
This circuit is an universal frequency generator which you can use in numerous frequency and time period testing applications. It is primarily well suited for a gate pulse generator in […] The post 1...
View ArticleTouch Dimmable LED Light Bar Circuit
This LED light bar with dimmable feature will allow the user to adjust the brightness of the lamp in 4 steps, with100%, 50%, 10% and 0% illumination control at each […] The post Touch Dimmable LED...
View ArticleSmall Stereo Amplifier Circuit with Bass Treble Controls
A complete, self-contained, small and compact Hi-Fi stereo amplifier circuit with bass, treble, volume control is presented in the following article. This small compact stereo amplifier can be used for...
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