The discussed circuit for a simple solar LED street light system is specifically designed for the new hobbyist who can build it simply by referring to the pictorial schematic presented here.
Dec 28, 2016
The post explains a submersible pump timer circuit programmed to cycle at 60 minute interval for watering the fields consistently. It also includes a time "memory" feature which ensures that the timer "remembers" the counting during mains failures, and restarts exactly from where it was interrupted when mains power is restored. The idea was requested by Mr. Siva.
Dec 22, 2016
Capacitor charge and discharge periods is usually calculated through an RC constant called tau, expressed as the product of R and C, where C is the capacitance and R is the resistance parameter that may be in series or parallel with the capacitor C. It may be expressed as shown below:
Dec 21, 2016
In this post we are going to learn about stepper motor. We will be exploring what stepper motor is, its fundamental working mechanism, types of stepper motor, stepping modes, and lastly its advantages and disadvantages.
Dec 16, 2016
LED lighting products are relatively new for the commercial market and as with any new product, they have to deal with doubt and negative comments from consumers’ side. There just is a lot of false information about LED lights that creates many misconceptions about them. So here are the greatest myths about LED lamps and also some facts that show how untrue these myths are.
The post discusses a simple automatic triac changeover circuit from mains to inverter and vice versa for ensuring a well isolated inverter mains transfer for the load. This is to eliminate the possibility of the grid energy meter recording the inverter supply consumption in the utility bill. The idea was requested by Mr. Puneet
Dec 15, 2016
The post discusses a simple food warmer lamp timer circuit for restaurants and hotels which can be used for automatically switching OFF the lamps after a predetermined time whenever the food under the lamps are idle or in the absence of an interaction under the lamps, thus saving precious electricity. The idea was requested by Mr. Mike Sunny.
The article explains how to make any BJT or mosfet based circuit free from stray signal pickup and false triggering by simply attaching a filter resistor or a capacitor across their base/emitter or gate/source terminals. The problem was raised by Mr.Henrik.
Dec 12, 2016
The post explains a simple 3 phase solar submersible pump inverter circuit which can be made by configuring a few ICs and a few power devices. The idea was requested by Mr. Lufono and Mr. Sami.
Dec 4, 2016
The article explains how to control a two pipe submersible pump valve to ensure that the pipe bringing in the municipal water is always given the main preference to the bore-well water source. The circuit is also equipped with a tank overflow cut-off feature. The idea was requested by Mr. Prashant.
Dec 1, 2016
In this post we are going to construct a sine wave inverter using Arduino. We will explore the methodology of the proposed sine wave inverter and finally, we will take a look at simulated output of this inverter.
The following free electricity generator circuit in cars and motorcycles was inspired from the oscillating dolls, and idols inside vehicles which may be seen constantly swaying and moving due to the vehicle's uneven motion or whenever brakes are applied.