hello,
im building an instrument for testing the circuit shown in the attached image. when pin x is open, the transistor is on and i see 0v in pin Y. But, when i connect a wire to pin x (6 feet wire), in order to test it, the transistor never turns on. when i disconnect the wire, the circuit works perfectly. the 6 feet wire is disconnected on its other side.
what can be the problem? and how can i solve it without removing the cable?
thanks
im building an instrument for testing the circuit shown in the attached image. when pin x is open, the transistor is on and i see 0v in pin Y. But, when i connect a wire to pin x (6 feet wire), in order to test it, the transistor never turns on. when i disconnect the wire, the circuit works perfectly. the 6 feet wire is disconnected on its other side.
what can be the problem? and how can i solve it without removing the cable?
thanks