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Recent content by SDG

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    Momentary Contact Switch with Latching LED Status Indicator Pole Sought

    dj... excellent idea. One of our guys also came up with this approach using a J-K flip-flop to drive the LED. In the lab this afternoon, he already got it working with a momentary contact switch as the trigger. Our transmitter has debounce circuitry on the switch connection already, so we're...
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    Momentary Contact Switch with Latching LED Status Indicator Pole Sought

    So perhaps rig a normal toggle switch with one of two parallel branches for the 555 circuit and the other for an LED indicator? That way the transmitter is momentarily activated like we need it to be when the switch is thrown but the LED stays lit afterward? But we also need the transmitter to...
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    Momentary Contact Switch with Latching LED Status Indicator Pole Sought

    The controlled circuit that the momentary contact interfaces with is a wireless transmitter that in turn sends an encoded command to a remote receiver. This receiver then opens or closes a power management relay on the remote device in a toggle mode of operation. Therefore, we do not have...
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    Momentary Contact Switch with Latching LED Status Indicator Pole Sought

    We need to momentarily activate a contact closure circuit (pulled up via 10K resistor) while having a second pole on the switch that latches an LED status light power circuit until the next time the momentary contact is made. Each time the momentary contact is activated, we need to alternately...

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