40 Watt Amplifier Circuit using Transistors
The three watt amplifier circuit discussed in the earlier post could be effectively upgraded into a 30 to 40 watt transistorized amplifier circuit, simply by adding a 2N3055 power output […] The post...
View ArticleSimple Circuit Tester Probe – PCB Fault-Finder
This simple circuit tester can be used for detecting short circuits, abnormal resistance conditions, continuity breaks etc inside an assembled circuit board or a PCB. The indication will be through […]...
View ArticleTouch Operated Code Lock Switch Circuit
This touch operated electronic door lock can be used for locking any entrance through a touch keypad. The lock's touch feature is foolproof and impossible to crack since the touch […] The post Touch...
View Article2 Simple Fastest Finger First Circuits Explained
The 2 simple fastest finger first indicator circuits presented here can be used for indicating which candidate was the first to press the answer button out of the 4 participating […] The post 2 Simple...
View ArticlePressure Switch Water Pump Controller Circuit
A pressure switch is a device which can be used for detecting water pressure in a tank and operate a water pump motor when the pressure gets too low, or […] The post Pressure Switch Water Pump...
View ArticleRegulated Car Battery Charger Circuit for Garage Mechanics
If you are an automotive technician, vehicle technician, or a motor mechanic, you may find this cheap yet powerful car battery charger circuit extremely handy, as it can be used […] The post Regulated...
View ArticleCup Full Indicator Circuit for the Visually Challenged
This circuit basically is a fluid level alarm indicator intended for alerting visually impaired individuals regarding the liquid level in a container such as cup, glass or bowl. The unit […] The post...
View ArticleRemote Control using Mains Power Line Communication
The proposed circuit will allow you to remotely control a mains AC operated appliance across rooms of your home through mains power line communication or PLC concept. In PLC technology, […] The post...
View ArticleSimple Ni-Cd Battery Charger Circuit
The post discusses a simple NiCd charger circuit with an automatic overcharge protection and a constant current charging. When it comes to correctly charging a Nickel-Cadmium cell, it is strictly […]...
View ArticleConstant Torque Motor Speed Controller Circuit
The post explains a DC Motor controller which features a constant torque compensation for enabling the motor to run at a consistent speed irrespective of the load on it. Drawback […] The post Constant...
View ArticleMini Transceiver Circuit
A transceiver is a wireless communication device which has its own transmitter and receiver units built-in for communicating with another similar device at some distant location. The user on both […]...
View ArticleUnijunction Transistor (UJT) – Comprehensive Tutorial
A unijunction transistor is a 3 terminal semiconductor device basically designed to be used as a single-stage oscillator circuit for generating pulsed signals suitable for digital-circuit applications....
View ArticlePIR Burglar Alarm Circuit
The PIR burglar alarm explained here will detect a human intruder within the stipulated range and sound an alarm. Thus, the system could be effectively use for detecting trespassing, theft, […] The...
View Article10 Simple Unijunction Transistor (UJT)Application Circuits
In the earlier post we learned comprehensively about how a unijunction transistor works, in this post we will discuss a few interesting application circuits using this amazing device called UJT. […]...
View ArticleHow to Kill Coronavirus with Ozone Gas Generator
The post explains the basic construction of an ozone generator apparatus for disinfecting a closed premise from dangerous viruses such as coronavirus. Ozone is a tested and an officially recommended...
View ArticleAutomotive LED Driver Circuits – Design Analysis
In cars or automobiles, LEDs have grown to be the preferred choice of lighting. Whether it's the rear tail-lights or the tell-tale indicators in the cluster as indicated in Figure […] The post...
View ArticleDiac – Working and Application Circuits
The diac is a two-terminal device having a combination of parallel-inverse semiconductor layers, which allows the device to be triggered through both directions regardless of the supply polarity. Diac...
View ArticleGrid Dip Meter Circuit
A dip meter or a grid dip meter can be considered as a kind of frequency meter whose function is to determine the resonant frequency of an LC circuit. For […] The post Grid Dip Meter Circuit appeared...
View ArticleHigh Power DC to DC Converter Circuit – 12 V to 30 V Variable
The post explains how to make a high power DC to DC boost converter circuit which will step up a 12 V DC to any higher level up to 30 […] The post High Power DC to DC Converter Circuit – 12 V to 30 V...
View ArticleHow to Make a Solar Cell from a Transistor
The majority of newbie electronic hobbyists would certainly have a couple of burned up power transistors such as 2N3055 hiding inside their junk box. Supposing we have their internal semiconductor […]...
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