Feedback Desired: What Application first Comes To Mind from the Term "High Voltage Op Amps"?

I am working on another project regard High Voltage Op Amps. I wanted to get member input regarding High voltage Op Amp applications.

Here's my question:

When you hear the term "High Voltage Op Amps" what's the first application that comes to mind for you from the list below?

I realize that High Voltage Op Amps can be used in a variety of applications. But I wanted to get your input on the main one that comes to mind for you. Granted, I'm asking something subjective. If you prefer to comment below, that's fine.

Thanks.

Randall

Top Comments

snidhi over 7 years ago

boosters come to my mind.
Something on the lines of http://www.ti.com/lit/an/snoa600b/snoa600b.pdf

Cheers
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michaelkellett over 7 years ago in reply to rscasny

That's a very low threshold to be a high voltage op amp - if we accepted that figure it changes the scope of applications a great deal because it is still in the range of low cost jelly bean parts. My definition would be >40V.

I can't rationally tick any of the boxes but you can rule out high speed, low power, precision and general purpose.

Audio is a possibility but special parts tend to be used ( pity National Semiconductor, now part of TI, stopped making most of them a while ago).

Power is about what you have left from your list, but instrumentation and measurement are things that come to mind as well.

MK
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dougw over 7 years ago in reply to DAB

Wow - over 1000V is pretty rarified territory for op-amps. Maybe Apex has a few.
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DAB over 7 years ago

High power to me is in the Kwatt range, so I am thinking >1000 volts.

I would envision that these types of opamps would be used in Audio amps, long distant RC apps, motor controls, induction heating, and all sorts of other interesting applications.

DAB
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rscasny over 7 years ago in reply to dougw

Good question. I was thinking about the same as you: over 36V. But the person I am working with defines it as over 27V.

Randall
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dougw over 7 years ago

What do you consider high voltage?
Most op-amps used to run off +- 15V or +-18V so I think of high voltage op-amps as anything over 36 volts.
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genebren over 7 years ago

In addition to power situations, I also think of Automotive applications, where voltages can range higher than a lot of commercial environments.

Gene
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