A good friend of mine (electronics hobbyist) ask me if I want to make a small review about 3 of his sites and I accepted….
There are three different categories:

• lamp dimmer switch reviews, circuits, tips and wiring diagrams
• natural mosquito repellent electronics product reviews, circuits, tips and tricks.
• tv antenna amplifier circuits, tips, reviews and how to choose the perfect antenna amplifier for you tv set.
• burglar alarm systems circuits, tips, advices and reviews about burglar alarm systems.

This simple LED dimmer circuit has 2 transistors, 1 resistor and 2 potentiometers.
Typical segment displays LEDs consume around 25 mA for each segment and should be limited to it with resistors. If a six digit display is to be current limited, at least 42 series resistors are needed.
To counter the above described problems, the led dimmer circuit it allows for eventual adjustments of the display’s brightness.

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Electronic Circuits gallery – enjoy all circuit diagrams and schematics posted until today. In every box is the picture and below is the link to the original article.