Power Source

Manoj Hiwarkar85

Intellectual 730 points

Other Parts Discussed in Thread: LM324

I want to build a AC power source of 220v , 25 Khz.and 100Watt. Can you please suggest me the design?

over 5 years ago

0 LeonardEllis over 5 years ago

TI__Guru 71526 points

Hello Manoj,

Please provide more detail, such as VIN and VOUT and IOUT. Is the 220VAC you refer to the VIN, or do you want to generate 220VAC? A block diagram would be helpful.

Regards,

~Leonard

0 Manoj Hiwarkar85 over 5 years ago in reply to LeonardEllis

Intellectual 730 points

VIN=220V-260V

VOUT=220V

POUT=100W

IOUT=POUT/VOUT

OUTPUT FREQUENCY=25KHz

0 Manoj Hiwarkar85 over 5 years ago in reply to Manoj Hiwarkar85

Intellectual 730 points

Can you please reply?

0 DAVE Wallace over 5 years ago in reply to Manoj Hiwarkar85

Prodigy 140 points

Use a sine wave generation technique from TI Application Note 263 and class B amplifier. I am not an engineer by the way.

0 Manoj Hiwarkar85 over 5 years ago in reply to DAVE Wallace

Intellectual 730 points

Then who are you? and where is Leonard , why he is not replying ?

0 LeonardEllis over 5 years ago in reply to Manoj Hiwarkar85

TI__Guru 71526 points

Hello Manoj,

Apologies for the delay. I am trying to locate an expert on this design topic. I will provide an update status to you by the end of the day.

Thank you for your patience, and again, my apologies for the delay.

Also, one clarification: the 220v-260v VIN is DC, correct?

~Leonard

0 Manoj Hiwarkar85 over 5 years ago in reply to LeonardEllis

Intellectual 730 points

NO...!! 220v-260v VIN is AC

0 DAVE Wallace over 5 years ago in reply to Manoj Hiwarkar85

Prodigy 140 points

Here's my ridiculous input today.

What is the INPUT frequency?

Is the source an AC Generator?

Is 25kHz VOUT to remain stable across 47Hz-440Hz VAC input?

Or is the source a series of Primary or Secondary cells?

Is this a switch mode power supply? It sounds like a line conditioner design to me. Multi potted transformer with delay line.

Why 25kHz? Is that the switching frequency for a buck converter? Common mains '240VAC' to 220VAC? Or 240VAC to220VDC

25kHz is that an oscillator?

Try DAC driven logarithmic shaper signal feed into a class B thermionic valve based amplifier. If you want 1kW and 25MHz you can try a ROM driven DAC for oscillator and ordinary RFvacuum tubes can switch at that frequency.

If you're prototyping with SMPS design, download the TI POWER STAGE DESIGNER TOOL and execute c:\java -jar "Power Stage Designer Tool 4.0.jar"

If source is already 25kHZ use an RLC circuit for your POWER SOURCE

RLC circuit values

L=10mH

R=50ohms

C=20nanofarads

f=25000cyclespersecond

Xc=800ohms

Xl=650ohms

Z=200phms

0 Manoj Hiwarkar85 over 5 years ago in reply to DAVE Wallace

Intellectual 730 points

1. What is the INPUT frequency?

50Hz

2. Is the source an AC Generator?

Which source input ? no its our simple mains plug in homes

Is 25kHz VOUT to remain stable across 47Hz-440Hz VAC input?

Yes. Input will only be 50Hz.

Or is the source a series of Primary or Secondary cells?

No nothing like that.

Is this a switch mode power supply? It sounds like a line conditioner design to me. Multi potted transformer with delay line.

May be you can say that

Why 25kHz? Is that the switching frequency for a buck converter? Common mains '240VAC' to 220VAC? Or 240VAC to220VDC

Because my output resonates on the frequency.. No not a buck converter. Its a piezoelectric transducer. I have seen your transducer driver designs, thise are not suitable in terms of power,so please don't suggest me that again.

Is 25kHz is an oscillator?

Yes.

Why DAC?? I just want to change the frequency of input signal right??

0 DAVE Wallace over 5 years ago in reply to Manoj Hiwarkar85

Prodigy 140 points

RLC?

0 Manoj Hiwarkar85 over 5 years ago in reply to DAVE Wallace

Intellectual 730 points

No its an ultrasonic transducer of 100watts 25khz

0 Manoj Hiwarkar85 over 5 years ago in reply to DAVE Wallace

Intellectual 730 points

No its an ultrasonic transducer of 100WATTS and 25Khz.

0 DAVE Wallace over 5 years ago in reply to DAVE Wallace

Prodigy 140 points

I can't think of any design that only uses only passive components.

Dozens of switching circuits with some active semiconductor component

I keep thinking RC phase shift oscillator, not a frequency doubler or multiplier...

Design a passive frequency multiplier?

I looked at pwr supplies for ultrasonic transducers (similar to 25kHz) and there's a few passives R C, two flybacks, and four TO-220 semiconductors on heat sink. To design this without the actives would be nice.

0 DAVE Wallace over 5 years ago in reply to DAVE Wallace

Prodigy 140 points

Sorry! I knew that! "No its an ultrasonic transducer of 100WATTS and 25Khz." I just read that. I knew that much after you indicated piezo-electric and 100W and used search engines.

0 Manoj Hiwarkar85 over 5 years ago in reply to DAVE Wallace

Intellectual 730 points

So what is to be done now?

0 Manoj Hiwarkar85 over 5 years ago in reply to DAVE Wallace

Intellectual 730 points

Have you people abandoned this case / thread??.. Pl. clarify because there is no point in keeping it lingering unnecessarily.

0 LeonardEllis over 5 years ago in reply to Manoj Hiwarkar85

TI__Guru 71526 points

Hello Manoj,

There is no TI Reference Design that meets the design requirements you have stated. I have been contacting experts who have provided similar designs for their advice or recommendations, but no one has seen anything similar to your requirements. The closest Reference Design is an inverter, but it operates at 60Hz, not 25kHz: http://www.ti.com/tool/TIDA-01606 .

Please feel free to search other Reference Designs to find circuitry similar to each stage of your design that you could modify to adapt to your requirements: www.ti.com/reference-designs/index.html .

I wish I had a similar Ref Design I could provide, but we do not. Perhaps it would be helpful if you created a block diagram for each stage of your design (AC power-in to DC; 25kHz generator; 25kHz high voltage driver) and search for a solution to each stage.

And just out of curiosity, is the transducer you are using a commercially available one? If so, who is the manufacturer and what is the part number.

Regards,

~Leonard

0 Manoj Hiwarkar85 over 5 years ago in reply to LeonardEllis

Intellectual 730 points

Yes the transducer is available commercially.Here is the link which will give you all the details.

https://www.bjultrasonic.com/shop/25khz-100w-ultrasonic-cleaning-transducer/

0 LeonardEllis over 5 years ago in reply to Manoj Hiwarkar85

TI__Guru 71526 points

Hi Manoj,

Thanks for the link. After some searching, I found they provide the driver for the transducer: www.bjultrasonic.com/shop/220v-50w-ultrasonic-pcb-generator/ . They might have a technical manual they would be willing to provide.

~Leonard

0 DAVE Wallace over 5 years ago in reply to Manoj Hiwarkar85

Prodigy 140 points

Since no expert engineers have opined, I'm going to try to explain what I think I know about this, even if it's disconcerting to the originator of the question.

The frequency of an AC generator?

"25kHz AC out"?

The frequency of an AC generator mechanically driven by a DC motor directly connected to rectified household current, can output 25kHZ if configured properly.

F=number of stator poles

P=rotational speed

F(P) / 60(cps/sec)

Can this be modified into a "nonmechanical solid-state drive"? a BLDC steppermotor driver, inductors, and a servo amplifier are my guess?

1. BLDC steppermotor driver, inductors, & servo amplifier

2. class D audio amplifier based design

3. FET based design.

I have no test equipment other than an analog volt-ohm-meter. If you have an oscilloscope, or can afford one; you are more than equipped and capable to engineer this, and to higher power than 100W. I saw something similar ultrasonic transducer on alibaba.com

why only 100W? why not 1000W or 2500 Watts@25kHz sinusoidal?

Does it have to be sinusoidal? or can it be squarewave? Design looks like modified FET full bridge so I doubt it's pure sinusoidal.

0 DAVE Wallace over 5 years ago in reply to Manoj Hiwarkar85

Prodigy 140 points

design for 28.4kHz usingg LM324 and LM3875T

0 DAVE Wallace over 5 years ago in reply to DAVE Wallace

Prodigy 140 points

40W-56W using LM3875T

28.4kHz from 1/2(pi)RC = 56K & 100pF RC wein bridge oscillator

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