Today I am going to share a very useful and clever circuit diagram sent to me by Mr. August Peterson. This circuit is a non-contact HT spark tester and timing light tool. It is specially designed for modern cars where checking for a spark is very difficult and dangerous for the car electronics. Why Mr. […]
LED
SMPS LED Bulb Circuit with Dimmer Control using IC IRS2530D
Today we are going to look into a very high efficiency resonant-mode off-line LED driver circuit. It is based on a very popular Infineon article which uses the IRS2530D DIM8 controller IC. Normally electronic ballast technology is used for old fluorescent tube lights, but here Infineon used the same concept to drive high power LEDs […]
LED String Series Resistor Calculator
Want to know the exact current limiter resistor value for a specific LED series string? You can now use this calculator toll to quickly get the precise LED series string resistor value. Calculator by homemade-circuits.com LED Series Resistor Calculator Supply Voltage (Volts) LED Forward Voltage (Volts) LED Current (mA) Number Of LEDs In Series Calculate […]
Simple 220V RGB LED Bulb Circuit for Christmas, Diwali Decoration
In this post I will explain this 220V RGB slow fading LED bulb circuit step by step and we can start from the left side and slowly move toward the right side so that you can understand what each block is doing. We use many parts like 555, 4017, 33uF, D1 to D4, and others […]
Automotive Display LED-backlight Driver Circuit using LP8864-Q1
The LP8864-Q1 is this cool automotive high-efficiency LED driver that comes with a boost controller. Basically it is made to efficiently power the LEDs in your car. It has got these four high-precision current sinks that do something called phase shifting. What is neat is that this phase shifting automatically adjusts based on how many […]
LED Light Wave Effect Generator Circuit
In this post I have explained a simple LED light wave effect generator circuit which will sequentially create a difference in brightness over a chain of LEDs, creating a chasing light wave kind of visual effect.