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Strip LEDs are available in different colours powered by direct current (DC) source. These LEDs are available as surface mount devices with... -
The debate still goes on as to which are better, valves or transistors. We don’t intend to get involved in that argument here. But if y... -
A circuit for monitoring supply voltages of ±5 V and ±12 V is readily constructed as shown in the diagram. It is appreciably simpler th... -
Here is a simple call bell circuit that displays a welcome message when somebody presses the call bell switch momentarily. the alphanum... -
When you step out of your brightly-lit house into the darkness, it takes a while for your vision to adjust. A solution to this problem ...
