A simple clamp can be made from a long bolt, washers and nuts-lamb. The jaw faces are made of solid wood.
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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...
ELECTRODISCO?
No, just securing the bottom of the Ironing Board extension socket, you can remove the wire from under the feet to ensure additional comfort and to comply with the rules technici security.