In this post I have explained a sequentially advancing 25 LED timer circuit which may be initiated on the 1st day of December so that each LED lights up on each day until the 25th of December (on Christmas) when all the 25 LED can be seen lit up. The circuit was requested by Mr. […]
Archives for 2015
LED Meteor Shower, Rain Tube Circuit
In this post I have explained how to design an intriguing LED light effect that generates a collapsing metor shower like appearance. The idea was requetsed by Mr.Pinto Mondal. Technical Specifications I am very grateful of your work. Sir I want to make a circuit,which available in the market like 1 or 1.5ft long led […]
Remote Controlled ATS Circuit – Wireless Grid/Generator Changeover
In this post I have explained 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 […]
Petrol to LPG ATS Circuit using Solenoid Changeover Valve
In this post I have explained 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 […]
Solid-State Inverter/Mains AC Changeover Circuits Using Triacs
In this post I have explained 2 simple concepts for making solid-state triac based Inverter/mains AC changeover circuit, the idea was requested by Music girl. Technical Specifications I would like to replace the SPDT relay with 2 scr’s. Would you consider a circuit to replace those changeover relays? I believe a relay would need to […]
What’s Ripple Current in Power Supplies
In this post I have explained regarding what’s ripple current in power supply circuits, what causes it and how it can be reduced or eliminated using smoothing capacitor. What’s Ripple in Power Supply Circuits In all AC to DC power supplies the DC output is acquired by rectifying the AC input power and filtering through […]