#8816
LectronFan
Moderator

    Hi Bbarry,

    This just comes to me : is it possible that you used a different light bulb ?

    It should be a 6V and 50mA light bulb. Other types may destruct your transistors.

    The Base-Emitter junction is quite delicate and can not handle more then a certain milli ampères .

    I will make more tests and measurements this evening and will let you know.

    Greetings,

    Frank