The dimmer circuit here work for both 110V and 220V AC. The dimmer circuit is wired in series with the lamp, you can say the dimmer circuits is installed in series with the lamp. Be careful that the ...

If you fondly remember drawing circuit diagrams at school, this lamp will make you smile: Its designers created it to mimic the line-drawn circuit plans that make it work. The lamp—called Node ...

A solar day lamp is a simple, inexpensive device for bringing “daylight” to dark interior spaces whenever the sun is shining. This article provides complete instructions for designing lamps using both ...