Reply to "Station siding electrical question"

Stan;

I built up your circuit to be used on a display layout that a club I belong to takes to train shows to attract new members and promote the hobby. I have some problems:

When the circuit powers up the relay is energised without contact on the pin 2 circuit.

Contact on the pin 4 side won't release the relay. I have a led and 1k resistor between pin 3 and ground. It shows output on pin 3. When the off contact is closed the led brightness drops to about 1/3 to 1/2. But not enough to turn the relay off. I have switched the 555 chip with the same results. Any ideas?

Thanks.

Jay Edgerton

5/10/125:36 PM

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