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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... -
If you insist on using a valve radio and listening to medium-wave stations, you have a problem: the existing broadcasters have only a ... -
Since his letter-box is outdoors and quite some way from the house, the author was looking for a simple means of knowing if the p... -
There are monitors which only have three BNC inputs and which use composite synchronization (‘sync on green’). This circuit has been des... -
This mousetrap is built around a PlC12F683 and uses an infrared transmissive optical sensor that is modulated at a frequency of 38 kHz, ...
