Sorry for asking stupid question like this, i just wanna comfirm am i right about the connection of these simple circuit.
wat i wish is to use a 5V signal to trigger a 24v input.
My control signal is 5V which i will connect to the transistor base with resistor in series, then i supply a 24V source to the collector with resistor in series as well.
So wat i wanna ask is:
1) is the way i connect this circuit correct?
2) where should i connect my output device, at the collector or emitter?
3) wat value of resistor i should be using and can i use transistor 9013?
Actually i am trying to activate a valve with 24V, so i don think i load would affect much. If it is connected to collector, is it the +ve of valve to collector and -ve of vale to the emmiter.
Actually i am trying to activate a valve with 24V, so i don think i load would affect much. If it is connected to collector, is it the +ve of valve to collector and -ve of vale to the emmiter.
If the solenoid valve is 24V dc operation, it would be connected with +V end of the solenoid to the +24Vdc power supply and the -V end of the solenoid would be connected to the collector of the transistor.
The problem is you have not told us the current required by the solenoid or its resistance. This would determine if the current rating of the transistor is high enough for the solenoid.
If you drive a solenoid with a transistor you MUST have a clamping diode across the solenoid.