Gudday people,
Please i need ur help/idea on hw i can implement a communication project. I want an app on phone to wirelessly light up an several LEDs independent of each other(one at a time). If dis kind of project has already being done before den can you point me in d ryt direction(link)...
Good day everyone, please can anyone tell me or give me an idea on how to interface an ultrasonic sensor with a usb bluetooth adapter?
Also mention the possibility.
Please does anyone have any idea on where and how to get a time delay circuit that comes on every 8hours, remain on for about a minute then go off again, and continues the cycle. Also is is possible to use a PIC for such an operation
There are four regions. Forward active when Vbe>0 and Vbc<0, Reverse active when Vbe<0 and Vbc>0, Saturation when Vbe>0 and Vbc>0 and Cutoff when Vbe<0 adn Vbc<0.The above is for NPN. The question is a PNP BJT with Veb=0v and Vcb=-3v. The problem is non of the values Vbe's above a definite...
My lecturer has bn teasing us with this. In what region of operation will a BJT be operating when Vbe=0? i.e the emitter and base are shorted.Thanks 4 ur replies:)
Ok. Firstly the Input voltage has been changed to 9v battery. As for the resistor for the LM117. From the data sheet the formular is Vout=1.25(1+R2/R1)Vin. also from the data sheet R1 was set to 240ohm. From my calculations R2=176ohm which when i simulated got less than 3v at the output. But...
Gudday. This is work i was able to come up with. Tried two methods. Please feel free to criticize and advise on the circuits attached.
Didnt see a 7803 so i used a 7805 and applied voltage divider to get out 3V. Does it make sense?
Goodday, Can anyone give me some ideas on how to design/build a 3V power supply from a 12V battery. The 3V will supply about 7.7mA to a sensor. Thanks for your anticipated replies.:)