Current limiting resistor for LED or other loads
How to reduce voltage for LED and others loads. We use a limiting current resistor reduce current or voltage in a series circuit. So easy to do Read more
Basic components TIPs
How to solder on circuit board
Why project does not work? Sometimes solder joint is bad. You need to know How to solder a circuit board. Easy but have to practice! Read more
How simple series circuit works
The experiment on the simple series circuit. To understand current flow and voltage across all devices in the circuit. Read more
Many ways to increase current transformer
To increase current transformer on the power supply. To save money with this idea, just only change connecting of on original transformer windings. Read more