Everything you need to know about diodes

Diodes are commonly used discrete semiconductor device. It has many uses and purposes. Its operation is based on PN semiconductor junction characteristics. Depending on diode physical and chemical properties it can behave very differently. Together with other electronics components diode can be used for voltage clipping, multiplying, rectifying, signal, demodulation, protection and even more. Elektro-labs have written pretty nice review of diode types and their common uses. Simplest and probably most recognizable is regular diode which is used in switching, protection rectification circuits. Another common diode type is Zener which is used for voltage stabilization, then list goes on LEDs and photo-diodes and finishes with more exotic ones – tunneling diodes and varactors. Continue reading

Have a Nice Drive with MPGuino

Do you know how can this MPGuino service you? MPGuino is a part of the OpenGauge instrumentation tool, which was created for the efficiency of instrumentation of all sorts. MPGuino is a Miles Per Gallon gauge for fuel injected vehicles, which is based on the arduino platform. Furthermore, the extra circuitry in MPGuino is for monitoring the fuel injectors and the speed sensor in the vehicle. Those parts that we needed: Two 5.1v zener diodes One 2n3906 PNP Transistor One 100 ohm resistor One 2.7k resistor Two 100k resistors Three tactile switches One freeduino arduino clone One LCD There are eight screens for this project, which: Continue reading