Happy new year to everbody, first of all.
Herebelow I have posted a part of my draft circuit diagram.
My questions to experts are as flollows: Please, see the attached diagram.
1) Is it a good way to switch on and off different loads by a single transistor. Or a separate transistor for each different load is necessary?
2) You will see that transistor base is grounded through a 10k resistor. I learned this from some where from internet. Is this absolutelly necessary or can I omit it?
3) You will also see that across terminals of the buzzer (magnetic type) a 1.0k resistor is connected. I learned this from a manufacturer's application hints. Is this absolutelly necessary or can I omit it?
Thanks for all in advance.
Herebelow I have posted a part of my draft circuit diagram.
My questions to experts are as flollows: Please, see the attached diagram.
1) Is it a good way to switch on and off different loads by a single transistor. Or a separate transistor for each different load is necessary?
2) You will see that transistor base is grounded through a 10k resistor. I learned this from some where from internet. Is this absolutelly necessary or can I omit it?
3) You will also see that across terminals of the buzzer (magnetic type) a 1.0k resistor is connected. I learned this from a manufacturer's application hints. Is this absolutelly necessary or can I omit it?
Thanks for all in advance.
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