Hi all,
I am seeking advice on the correct configuration to power a transistor used to energise a coil inductor.
In the circuit shown the coil driver is either a FET or a BJT. With a FET the PWM signal driver is sufficient on its own to feed the coil driver Gate as hardly any current is needed to activate it and hence energise the coil. However, when using a BJT (MJE13009) to run the coil, the base current is too high for the PWM module to supply and it gets damaged. What I am proposing then is to put a 2N2222A in between the signal generator and the coil driver to boost the base current to the MJE13009 and wanted to check if I have the value of the Base resistor right. I have included all the relevant values.
This is a simple issue for someone well versed in electronics but Physics is my main subject. Any confirmation or feedback would be appreciated.
Thanks
Jules
I am seeking advice on the correct configuration to power a transistor used to energise a coil inductor.
In the circuit shown the coil driver is either a FET or a BJT. With a FET the PWM signal driver is sufficient on its own to feed the coil driver Gate as hardly any current is needed to activate it and hence energise the coil. However, when using a BJT (MJE13009) to run the coil, the base current is too high for the PWM module to supply and it gets damaged. What I am proposing then is to put a 2N2222A in between the signal generator and the coil driver to boost the base current to the MJE13009 and wanted to check if I have the value of the Base resistor right. I have included all the relevant values.
This is a simple issue for someone well versed in electronics but Physics is my main subject. Any confirmation or feedback would be appreciated.
Thanks
Jules