If you feed a sine-wave shaped waveform into power transistors or power Mosfets then they spend plenty of time with a high current and a voltage across them. Then their power dissipation (heating) is the current times the voltage. It will be a tremendous amount of heat to get rid of and it makes a tremendous waste of battery power.
An efficient sine-wave inverter switches the transistors on and off at a high frequency. Then pulse-width-modulation changes the width of the pulses so the average current in the transformer is a sine-wave. The transistors remain fairly cool because when they have a high current then their voltage is nearly zero and when they have voltage then their current is zero.
What wave form does this one produce?, Does it have a low voltage shutdown? Which pin goes to Vcc and the ground and to which pins are the mosfet chanels connected? SOme capacitor valus are not shown like c3 to c6 Thanks Dennis
Its outputs are filtered into almost a sinewave. It uses an old fashioned TTL logic inverter IC that needs a regulated 5V supply.
It doesn't have low voltage shutdown. Its output voltage isn't high enough to drive Mosfets.
If you try to make a sine-wave inverter using a sine-wave input into a Mosfet amplifier then they will get extremely hot and waste a lot of battery power. A sine-wave inverter switches its Mosfets completely on and off so they don't get too hot and so they don't waste a lot of battery power. They are switched at a high frequency and pulse-width-modulation is used to make a stepped sine-wave that is filtered into a good sine-wave.
hello every body..im new 2 electronics.. am going 2 use the transformer with 220V as for primary(input) and 12V as for secondary(output). how much wattage it will produce and is it right to use 12v dc to the input with that transformer? thanks alot 2 all of u
You are making an inverter, right? If so you will need to make the 12v as the input and 220V as output. I need to know how many amps you are feeding in or better, how many amps it is giving out. Remember to work out the wattage is volts times amps
You can't use DC on a transformer, it will be a direct short...