Help in a project - how do I control a pulsed latching solenoid?
i need build circuit control latching solenoid. type of solenoid open when short 6vdc pulse (under 100ms) sent , will closed when reverse polarity , send "negative" pulse. want control using press-button: long keep button pressed, solenoid kept open. when let go of button, solenoid close.
this means when press button have send 1 "positive" pulse , when left go, have send 1 "negative" pulse.
another requirement have whole circuit needs consume no electricity when button not pressed. guess when let go of switch, need keep power connected couple hundreds milliseconds circuit can send the "negative" pulse close solenoid.
i know how program arduino circuit design, have no idea start... appreciated
this means when press button have send 1 "positive" pulse , when left go, have send 1 "negative" pulse.
another requirement have whole circuit needs consume no electricity when button not pressed. guess when let go of switch, need keep power connected couple hundreds milliseconds circuit can send the "negative" pulse close solenoid.
i know how program arduino circuit design, have no idea start... appreciated
the capacitor value depends on current solenoid takes - took 100ma , wanted 300ms
pulse @ 6v need 4700uf (but need non-polarised electroytic, since normal
electrolytics cannot tolerate reverse charging).
pulse @ 6v need 4700uf (but need non-polarised electroytic, since normal
electrolytics cannot tolerate reverse charging).
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