AVAQ SEMI
Let’s take a look at the schematic diagram of this inverter.
In this schematic diagram, there is a 12V motor, a 220V to 12V transformer, and a power supply at 9-12V. It is best to use a 12V power supply. Yes, you read that right. You only need these few components. As for why you choose a 12V motor? The transformer we choose is originally 12V to 220V, so it is best to use 12V AC at the input end of the transformer. If the motor voltage is smaller, the motor may be burned due to the power supply voltage being too high. If it is too large, it may be 12V. Voltage power supply cannot make the motor rotate, which defeats the purpose. In fact, choosing a 12V motor can also ensure that we can get AC power close to 12V.
What everyone is most concerned about may be why this motor can be used as an inverter. In fact, to put it bluntly, the inverter converts DC power into AC power, and finally boosts it through a transformer to obtain the desired voltage. For example, in this article, we want to get something close to For 220V AC voltage, the transformer can boost AC power, but not DC power, so the function of the motor here is to convert DC power into AC power.
As for why the motor can turn direct current into alternating current? In fact, this is related to the internal structure of the motor. Whenever the motor coil jumps over the equilibrium position, it will change the direction of the current. This knowledge point appears in high school physics textbooks. The teacher should have taught it, so the DC current can easily flow through the motor. into alternating current.
Just connect all the lines and connect a 220V light bulb to the output end of the transformer. Like the method of making an inverter in the video, although the production method is very simple, the power will not be very high, so in order to obtain better results , we’d better connect a low-power LED lamp to test it. If you want high power, you can use a high-power triode. If you are more interested, I will take the time to share the production of a high-power inverter. method.
The picture above is the actual detection effect diagram. When the power supply is connected to both ends of the motor, the motor will rotate. At the same time, we can also see that the LED light becomes brighter. Some LED lights may have a wider input voltage range, so more than 12V voltage can drive For this 220V LED light, it is very likely that a power supply with a smaller voltage than this can also drive the LED light, such as a 9V dry battery as the power supply, but this is subject to actual test results.
Michael Ratcliffe
Anteneh Gashaw
PX Protoypes
I'm not 100% sure your theory is correct. Yes, the commutator inside the motor changes current flow but that's just within the motor itself..
What's actually happening is that when the commutator changes coils within the motor, it interrupts the current to the transformer (yes, there are also spikes and some back-emf)
You are pulsing DC to the primary of the transformer.
You could do the same with a changeover relay.
common of the relay (C) to 12v, Normally open (NO) to transformer primary, normally closed (NC) to the relay's own coil. second coil terminal and other transformer primary to ground.
This uses the relay as a buzzer and pulses DC through the primary.
If you had a relay with more contacts you could properly reverse the current through the transformer and generate reall power.
old car radios (using valves) used to do this to generate the high voltage.