high turns ratio SMD transformer

[starfire]

Does anyone know of a source of SMD transformer to be used to transform a
low voltage (less than 3V) input to about 125 - 150V output? I'd like
something in the range of 1:70 to 1:100 turns ratio. I can control the
amplitude of the input. Google searches have been fruitless after several
days of searching.

The oscillator feeding this can be set to run at various frequencies but
I'll probably run
at about 200KHz.

The secondary needs less than about 20uA. I'm trying to keep overall system
power
low, also.

Any ideas of vendors to search would be appreciated. I've tried
Sprague-Goodman, Coilcraft, etc., but no one seems to have anything in this
high turns ratio.

Thanks.

Dave

 

[Boris Mohar]

On Sat, 23 Apr 2005 18:42:24 -0600, "starfire" <starfire151@cableone.net>
wrote:

Does anyone know of a source of SMD transformer to be used to transform a
low voltage (less than 3V) input to about 125 - 150V output? I'd like
something in the range of 1:70 to 1:100 turns ratio. I can control the
amplitude of the input. Google searches have been fruitless after several
days of searching.

The oscillator feeding this can be set to run at various frequencies but
I'll probably run
at about 200KHz.

The secondary needs less than about 20uA. I'm trying to keep overall system
power
low, also.

Any ideas of vendors to search would be appreciated. I've tried
Sprague-Goodman, Coilcraft, etc., but no one seems to have anything in this
high turns ratio.

Thanks.

Dave

http://www.picoelectronics.com/surface/pe004_5.htm



Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca

 

[starfire]

Thanks, I'll check it out.

Dave

"Boris Mohar" <borism_-void-_@sympatico.ca> wrote in message
news:anrl61ho0a6lnvalafiqpvpln13sua3p11@4ax.com...

On Sat, 23 Apr 2005 18:42:24 -0600, "starfire" <starfire151@cableone.net
wrote:

Does anyone know of a source of SMD transformer to be used to transform a
low voltage (less than 3V) input to about 125 - 150V output? I'd like
something in the range of 1:70 to 1:100 turns ratio. I can control the
amplitude of the input. Google searches have been fruitless after several
days of searching.

The oscillator feeding this can be set to run at various frequencies but
I'll probably run
at about 200KHz.

The secondary needs less than about 20uA. I'm trying to keep overall
system
power
low, also.

Any ideas of vendors to search would be appreciated. I've tried
Sprague-Goodman, Coilcraft, etc., but no one seems to have anything in
this
high turns ratio.

Thanks.

Dave


http://www.picoelectronics.com/surface/pe004_5.htm



Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things)
http://www.viatrack.ca

 

[mike]

starfire wrote:

Does anyone know of a source of SMD transformer to be used to transform a
low voltage (less than 3V) input to about 125 - 150V output? I'd like
something in the range of 1:70 to 1:100 turns ratio. I can control the
amplitude of the input. Google searches have been fruitless after several
days of searching.

The oscillator feeding this can be set to run at various frequencies but
I'll probably run
at about 200KHz.

The secondary needs less than about 20uA. I'm trying to keep overall system
power
low, also.

Any ideas of vendors to search would be appreciated. I've tried
Sprague-Goodman, Coilcraft, etc., but no one seems to have anything in this
high turns ratio.

Thanks.

Dave

Might wanna consider a different circuit topology. Disclose your end goal.
mike

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