One of the primary things i wanted to do with my Arduino was turn my generators into motors. My simple generators were not simple to turn into motors but this proved to be particularly tricky with my three phase generator. Doing this requires me to create a three phase inverter. The first time I looked at a circuit for this, I thought it would be dead simple. All I need is a few transistors and a few
Click here to download the full size of the above Circuit.
diodes then I can hook them up like this: and it would work. This turned out to be untrue. That diagram really leaves out a whole lot of details which had me scratching my head for weeks. In particular the transistors connected to the high side just will not work without additional circuitry. 6- 200 ohm resistors (actually I ran out of these and used 100 ohm and 4000 ohm resistors from the output of the MOSFETs to the Arduino Uno, but 200 ohm are probably a better choice) 3- TC4432 MOSFET driver chip. Be really careful with these, not sure if it was static on my part or poor quality control from the supplier but half of these didn`t work. If you want a inverter above 30V this component will need to be replaced with a different MOSFET driver. Another alternative might be a charge pump circuit. 1- 7805A R1424 Voltage regulator. This powers the Arduino from the battery pack. The onboard voltage regulator on the arduino could probably substitute for this. 1- capacitor. Unfortunately this didn`t have a legible label on it so I am not quite sure what I used beyond that it was not an electrolytic capacitor so it was probably fairly low capacitance. This was just to lower any ripple which occurred on the DC side of the inverter. 1- battery pack with six rechargeable 1. 25 volt batteries. I also ran this circuit using a 20V DC supply but if you do this pin 3 on the TC4432s must be disconnected from ground and the voltage regulator...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: