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Two-channel timer

Time relays or, in modern terminology, timers, It is widely used to control the electrical, that you want to turn on or off after a certain period of time. However, the simplest type of operation “turn on / off light” - only a small portion of the field of application of such devices. Today, built-timers - almost… Continue Reading

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Shutter device larger time intervals

The author offers the readers a few simple time delay devices available parts. These devices - analogue of timing with RC-chains. They applied schematics, allowing to increase the duration of time intervals generated. Figure. 1 is a diagram of a simple time relay, collected on… Continue Reading