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Thank you so much for your reply. Can you please help me design a 'safe' low pass filter to reduce the humming? I don't mind using large inductors. Thank you.
Someone told me that capacitors in output can induce back surge which can damage the MOSFETs inside the circuit. So I was just afraid to keep the capacitor connected.
I have bought a Chinese 250W 'SUVPR' brand car
inverter guaranteed to deliver 150W. It is 10 times cheaper than a pure
sinewave inverter and so I chose it for backup
against infrequent power-cuts. It outputs step
approximated sinewave at 220V, 50Hz AC. It
works great, but the only problem is the...
Many thanks for your design. Tons of thanks to all who have shared their knowledge with me. I am starting this project soon. Thank you very much to you all. May the Almighty bless you all. :)
Thank you very much for the design, sir. I am sorry to say that due to my lack of knowledge in this field, I can't understand where the output comes out. Also I am unsure about the IC. I shall be very grateful if you kindly elaborate. Thank you sir.
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Thank you so much everyone for your great help. Many thanks for being so much helpful! Friends, is there a very easy way to make a sinewave oscillator and amplifier, so that all the filtering hassle is removed? Can I do it myself on a veroboard? If the output is pure sinewave, I want to run...
Hi,
I am really sorry Ali. I don't have a LC meter to measure the inductance. Is there any other way to do so? Thanks.
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I got the idea. Thanks so much. If I add a large value capacitor in parlallel then a...
I think I was wrong at that time. I got the value of impedance from user manual. But I have measured it just now.
I don't know how this happens. I pulled out the vibrator from the plug and measured the resistance of the two coils which are in parallel, individually. I did it with a multimeter...
Thanks so much sir for your concern. The square wave frequency is 50 Hz. I want a step approximation sine wave like the output of APC branded UPS. The load is a electromagnetic vibration based air pump. It is rated 8watts at 220 volts. Impedance of the vibrator's coil is 6180 ohms at 35degree C...
Hi,
Thank you Mr. Goldsmith for your prompt reply. Can you kindly suggest me the approximate values of the inductor and capacitor for this project? Will this output an almost pure sinewave?
Thank you so much Mr. Pheetuz and Mr. Goldsmith. May I ask something? What will happen if I add two inductors in series and a non-polarized capacitor in parallel with the output of the square wave? Will this work?
I have this board for generating square waves:
https://circuitsdiy.com/inverter-oscillator-board-using-flip-flops-74ls112
I want to convert this square wave output of the oscillator to a nearly sinewave output without much hassle. I want to feed the near sinewave output to an audio amplifier...
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