RELAY “TOUCH”

Fig. 1.Fig. 2.Simply by touching the sensing element and actuates an electronic device that includes an alarm or actuator. The sensing element Ан1 — plated plate connected through a resistor R2 with a grid of thyratron MTX-90 (Fig. 1). The potential appearing ka the grid of the thyratron when you touch the plate, sets fire to it. The resulting circuit mtkh-90 pulses through the capacitor C2 is transferred to the SCR Q3 and the load (relay, lamp, siren, etc.). The circuit is powered directly from the mains alternating current. The capacitor C1 plays the role of damping resistor.

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FRIEND FRAME

Learn? No, not the one who is smiling in the photograph, and the frame in which the picture is inserted? That’s right: this is the original application details from the old key switches. Its the plastic trim so gets a second life as miniature photo frames.

THE MEDALLION OF HEALTH

Flu epidemic rolled on us with ominous frequency. Someone trying to protect themselves from the disease influenza vaccination, someone takes medications and vitamins that improve the immune system, but I recommend all readers to do for themselves and their children medallions, which will significantly reduce the risk of colds. They are based on a case Read more…

SLED TANDEM

Children are always fun to play and have fun together. Give them the opportunity at the winter slope, linking together a couple of sleds. But if you have to attach to front bar as shown in the picture, sitting behind will, resting in his legs, to drive this sleigh train.