The circuit idea I have I have explained in this article can be used for controlling the intensity of many LEDs through a ceiling fan dimmer switch unit. This circuit was requested by Mr. Joseph who wanted a simple method through which an ordinary home dimmer switch could be integrated with a chain of LEDs for controlling its brightness from […]
Newly Updated Circuit Projects:
How to Charge a Cell Phone from a 1.5V Battery
In this post I have explained a very simple charging a cell phone from a 1.5v battery utilizing merely a 1.5V as the input source. The source can be any 1.5V cell rated at minimum 1000 mAH. Circuit Operation The circuit description is provided below, let’s try to understand the working principle of the proposed […]
Battery Charger Circuit using Fixed Resistors
This universal automatic battery charger circuit is extremely versatile with its functioning and can be adapted for all types of battery charging and even for solar charge controller application. Universal Battery Charger Main Features A universal battery charger circuit must have the following main features included in it: 1) Automatic battery full charge cut-off, and […]
How to Make 1 A Constant Current LED Driver Circuit
In this article I have explained a simple 1 amp constant current LED driver circuit using the IC MBI6651 from MACROBLOCK. The IC has been specifically designed for operating high power LEDs safely by providing a constant current output. The circuit includes very few external components and therefore becomes very easy to assemble at home. […]
Pellet Burner Controller Circuit
In this post I have explained a programmable sequential timer with controller circuit which may be used for automatically controlling a homemade pellet burner/boiler system. The circuit was requested by Mr. Vasilis. Technical Specifications I have used your circuit on my homemade pellet burner that uses a 12V Ac motor for the feeder screw running […]
USB Isolator Diagram and Working
The following email discussions were sent to me by Mr John Sweden who is one of the avid readers of this blog, here he explains about an USB isolator device, and how it may be incorporated while using an oscilloscope with a PC, in order to safeguard the oscilloscope and the test circuit from accidental […]