In this article we learn how to design and build a solid state contactor circuit using triacs for operating heavy duty loads like submersible borewell pump motors with high reliability, and without any concerns about wear and tear issue or long term degradation issues of the contactor unit. What is a Contactor A contactor is […]
Industrial Electronics
Corona Effect Generator
In this post we study regarding what is corona effect and how to make a corona effect generator circuit at home using a CDI coil and a tesla coil configuration. Then idea was suggested by Mr. Sanjoy Corona Treatment for Paper Coating Many many thanks for posting the alternate switching timer circuit as requested. Although […]
Simple Tea Coffee Vending Machine
A simple tea, coffee vending machine circuit idea is explained here which allows a customer to access the beverage with a press of a button and by inserting a genuine 5 rupee coin. The idea was requested by Mr. Ramesh. Customized Beverage Vending Machine I need the water puling mechanism like coffee vending machine if […]
Smart ATS Design and Working
The following article explains an enhanced Automatic Transfer Switch (ATS) Circuit, which includes several customized sequential changeover relay stages making the system truly smart! Designed and written by: Abu-Hafss. Main Features The circuit presented here is an ATS with following features: a) Battery Voltage Monitor – The system will not operate when the battery drops […]
Petrol to LPG ATS using Solenoid Changeover Valve
The post explains a simple mains to generator automatic transfer switch (ATS) which features an initial petrol start which switches to an LPG gas supply via fuel valve changeover switches. The idea was requested by Mr. Junaid. Technical Specifications sir i want to make my generator automatic start on petrol then shift the generator on […]
Remote Controlled ATS – Wireless Grid/Generator Changeover
The post explains a remote controlled automatic transfer switch for enabling an automatic grid to generator changeover action from a specified distance. The idea was requested by Mr. odudu johnson. Technical Specifications Project description: Automatic changeover switch with wireless generator control abilities or mechanism. The generator rating is going to be between 2.2kva up to […]
Atomizer Circuit for E Cigarettes
The post details a simple transistorized PWM controlled atomizer circuit for E-Cigarettes which may be used for controlling the filament heat levels of an atomizer. The idea was requested by Mr. Dave. Technical Specifications My name is Dave. Found your site searching for a driver circuit for a mosfet gate. I like your page but […]
Automatic Door for Hen House
The articles discusses an automatic door mechanism circuit that responds to the ambient light conditions by keeping the door open during day time and closed during night. Here the application is used for operating a hen house door. The idea was requested by Mr. Gavin Sweet Technical Specifications I have a project that I am […]
Over Load Protector for Lathe Machine
The article discusses a simple overload cut off circuit for safeguarding heavy mains operated machines such as a lathe machine. The idea was requested by Mr. Howard Dean. Technical Specifications May I first say I have very little knowledge of electronics although I could follow a simple diagram. I operate a small Chinese lathe for […]
High Power Industrial Mains Surge Suppressor Explored
The post explains a high energy surge suppressor circuit for suppressing high current mains surges in industrial electrical. The Circuit Problem: I’ve been reading a lot of your design ideas and I am extremely impressed with your designs. I don’t have anywhere near your level of expertise, but I can follow directions very well. I […]
Heart Rate Monitor with Alarm for Checking High Pulse Rate
In this article we comprehensively discuss a relatively accurate electronic heart rate sensor circuit processed by a few discretely wired opamp circuit stages, and subsequently we’ll learn how this can be modified for making a heart rate monitor alarm circuit. Using IR Photodiode Sensors The sensing of the heart pulses is basically done by two […]
Automatic PWM Door Open/Close Controller
The post explains a simple PWM controlled automatic turnstile or door circuit featuring an automatic open/close action via a photo-interrupter stage. The idea was requested by Mr. Bruce Clark. Technical Specifications Thank you for a really fantastic service you provide. Would you please be so kind as to help me with a modification of the […]
PWM Air Blower Controller for Biomass Cook Stoves
The article details a PWM speed controller circuit for a fan air blower system to be used in Biomass cook stoves. The circuit also includes an uninterrupted automatic battery back-up supply with an integrated automatic battery charger circuit for the particular application. The idea was requested by Mr. Tushar and Sivaranjani. Technical Specifications Thanks for […]