LM317T Voltage Regulator with Pass Transistor

This is a description of a simple opamp circuit that will translate the variable resistance of a Flexi-Force sensor into an analog voltage and maintain linearity across the sensor's measurement range. www.tekscan.com www.national.com Your feedback and topic suggestions for future tutorials are welcome.



http://www.youtube.com/watch?v=VtxFtzWlTgg&hl=en

Modern automotive pressure sensors are of up most importance, whether gasoline or diesel engines. Did you know that a faulty HVAC or air conditioning high pressure sensor can make the engine not start? It so happens that on some vehicles (Cadillacs) the high pressure sensor is connected to the other sensor voltage reference line. So a shorted sensor will render the crank sensor inoperable. Get the scoop here on pressure sensors. They're used in injection systems, transmission, HVAC and many other systems. Presented using advanced software CG animation technology to help you understand. Part of our wiring diagram and electronic series shown here on this channel. Enjoy...



http://www.youtube.com/watch?v=_xSyhv6pWT0&hl=en

This video demonstrates PIR motion detector with a pir circuitry. This circuit is a home made. The circuit uses pir sensor which detects motion and amplifies the signal. relay is switched on when motion is detected,and switched off when no motion is detected. The voltage regulator used here are,7805 and 7812 ic . i had assembled this inside a switch board, and connected to the mains 250 volts. as you can see when the relay is on, and off, light is on, and off. When a motion is detected the relay is switched on. This circuit is always on when continous motion is detected. It waits for a while before switching off. again when it detects a motion it is switched on. this project was designed and developed entirely by Titoo . they consist entirely of content that titoo created himself.. completed in 5 days.



http://www.youtube.com/watch?v=k0g64fo5HP0&hl=en

Video accompanying society of robots forum post. Here is the original text of the post: Hello folks: So, I have posted several times as my son and I have completed our $50 Robot. We have solved soldering problems, voltage regulator problems, servo modifications issues, and a few others. Thanks to all of the help on this forum, we now have a working robot... almost. He (it) works. It drives along and does react to light on the sensors, which does change the direction of the wheels. So technically from my understanding of what he is supposed to do, it is working. However, we need sensor adjustment of some kind, because the robot just drives forward indefinitely unless I put my hand over a sensor to completely cover it. And even then this is not always fool-proof. I took a video to show you guys. Then it dawned on me to try more light instead of less light. So I shot a second video and this time used a flashlight. If I shine the flashlight on the sensor, the robot changes direction. Cool. This is progress. So now I was wondering, how do we change the sensitivity of the sensor input so that we get the same results without a flashlight? Is there something we can do in the code? Thanks very much.



http://www.youtube.com/watch?v=eZHcDYMlswM&hl=en

Testing internal ADC of PIC16F874 with high stability voltage regulator (Using LM317 + AN431AN-A)



http://www.youtube.com/watch?v=Cg-2FbxKokk&hl=en