In this post I have explained a simple 220V mains operated transformerless single rice bulb power supply circuit, which may be used for illuminating electronic rice lamp diyas replacing traditional oil lamp type diyas during festivals or for decorating sacred idols. The idea was requested by Ms. Rashmi. Technical Specifications I want to make a rice […]
Newly Updated Circuit Projects:
Control Two Submersible Pumps Alternately
In this post I have explained a simple water level controller circuit applicable for automatic toggling of two submersible water pumps alternately in response to a predetermined water level switching. The entire circuit is built using just a single IC and a few other passive parts. The idea was requested by one of the interested members of […]
Bike Magneto Generator 220V Converter
In this post I have explained a circuit design which converts a generator low voltage output into 220V DC and produces sequencing light illuminations across many bulbs in response to increasing voltage from the generator. The idea was requested by Mr. Ken. Technical Specifications I am a student from Singapore polytechnic. I know you’re a […]
Selectable 4 Step Low Voltage Battery Cut off Circuit
In this post I have explained a circuit configuration which facilitates a multi-step low voltage selection and cut-off for the battery being used and monitored. The circuit was proposed by Mr. Pete. Technical Specifications Dear Swagatam,Your assistance during the past few days has been incredible, thanks to which I think I have managed to get close to […]
Bicycle LED Light Circuit Using a Single 1.5V Cell
The proposed bike flasher flashes two white LEDs from a single 1.5V cell by using a solitary general purpose transistor, and does not need core for the involved transformer, the main core being the Air itself. Using Joule Thief Concept Every Joule Thief circuit uses ferrite rod or toroid core and its turns are wounded […]
Poultry Feed Controller Timer Circuit
In this article I have explained a timer circuit specifically designed for detecting a poultry feed controller ON time period, and alarming a buzzer once the set time elapses. The idea was requested by one of readers of this blog. Technical Specifications Hello, I am a broiler poultry farmer. I have no electronic knowledge or skills. […]