What coil do not occur now in our everyday life and tape, and fishing, typewriter and film projector and all have one awkward feature: they are wound — tends to unwind. For all of them a simple and reliable latch will serve kolejno of underwear elastic: soft and wide, it does not give content to unwind the coil.
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GLASS TIGHTLY
The hour glass slipping from its frame, it is necessary in the edge of the recess on it gently to apply a little glue of type "Moment" and, setting the glass in place, gently loading it...
CONTACTLESS CAPACITIVE RELAY
The basis of a capacitive relay — a low-power generator of high frequency such as local oscillator of a radio receiver. To the circuit L1C4 (see diagram) of the connected metal plate...
