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Independent security device

Readers are invited to standalone security device. In times of lack of free telephone pairs like “autonomous” industrial manufacturing, not equipped with means of transmitting information about the alarm situation to the central security console, equipped many facilities, where were the material values, - warehouses, the shops, savings banks, special… Continue Reading

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Triac power regulator soldering, do not interfere

The article describes an AC power controller, principle of operation is based on the change of a number of half cycles of the mains voltage, supplied to the load, per unit of time. Turning on and off the load moments occur near the transition of the mains voltage through zero,, which virtually eliminates switching… Continue Reading