Hi All,
i am building a pulse motor and i am using a hall effect switch to fire the coil.
if i remove the power transistor and replace it with LED to positive the led flashes when a magnet pass the (HES).
when i conet up the power transistor a (2SD729H), nothing happens.
when i remove the doide from the power transistor, the transisitor saturates and stays on,
if i remove the 1Kresistor nothing happens in the ciruit.when i replace it again the transisitor saturates, i have tryed with a few resistors but wityh no luck i am finding it really hard to do the calulations for the resisitors and i have run out off ideas , can some one please help. i bought myself an oscilloscope a HAMEG HM604 but i do not know how to use it properly. i can see the pulse, so can any one help on the oscilloscope i would be very grateful.
jason
i am building a pulse motor and i am using a hall effect switch to fire the coil.
if i remove the power transistor and replace it with LED to positive the led flashes when a magnet pass the (HES).
when i conet up the power transistor a (2SD729H), nothing happens.
when i remove the doide from the power transistor, the transisitor saturates and stays on,
if i remove the 1Kresistor nothing happens in the ciruit.when i replace it again the transisitor saturates, i have tryed with a few resistors but wityh no luck i am finding it really hard to do the calulations for the resisitors and i have run out off ideas , can some one please help. i bought myself an oscilloscope a HAMEG HM604 but i do not know how to use it properly. i can see the pulse, so can any one help on the oscilloscope i would be very grateful.
jason
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