50Hz True Sinewave Driver for UPS

[appupn]

Hello,
If anyone has an idea, how to devlpo a 50Hz true sine wave driver for UPS, would be appreciated for sharing the same.

 

[audioguru]

A true sinewave inverter uses a high frequency power oscillator to drive a small high frequency stepup transformer. The high voltage AC is rectified and is used to power a high frequency Pulse-Width-Modulated pair of Mosfets that make a stepped sine-wave.
Then an LC filter smooths the steps into a pure sine-wave.
Negative feedback is used for voltage regulation.

 

[zia79]

Bubba osc

Hello,
If anyone has an idea, how to devlpo a 50Hz true sine wave driver for UPS, would be appreciated for sharing the same.

search for bubba osc. using lm348 quad operational amp. a pure sine wave
circuit. and if u need diagram for it i will provide u, simple circuit less external parts an ideal for ups.

 

[audioguru]

search for bubba osc. using lm348 quad operational amp. a pure sine wave
circuit. and if u need diagram for it i will provide u, simple circuit less external parts an ideal for ups.

You cannot use a linear amplified sine-wave in an inverter. The amplifier will waste almost the same amount of power as the load by getting extremely hot. High frequency Pulse-Width-Modulation is used with the sine-wave creating the modulation. Then the output Mosfets switch and don't get too hot.

 

[mew1986]

how to desigen a tigger circuit for fet

 

[audioguru]

how to desigen a tigger circuit for fet

Please start your own thread and explain what you want to do.
A Fet is turned on or turned off, it is not triggered.

 

[appupn]

Sinewave driver for mosfet switching...

You cannot use a linear amplified sine-wave in an inverter. The amplifier will waste almost the same amount of power as the load by getting extremely hot. High frequency Pulse-Width-Modulation is used with the sine-wave creating the modulation. Then the output Mosfets switch and don't get too hot.

Ok.. let me know ur terms & conditions for the whole circuit...

appupn

 

[blueroomelectronics]

Just buy a UPS, it'll be cheaper than building one from scratch.