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dont suppose you have a link to the pump??
Yes, but 250V? Even the power outlet of my house is just 110/120v. How am I supposed to generate 250V? (sorry but I am a little new to this)
hmmm... get a crappy little dual primary transformer, wire the primaries in series, connect 110 to half the resultant winding and the piezoelectric across the whole thing
Why not buy their dedicated controller?
**broken link removed**
That gives you the control of the voltage and frequency that you need, and is its maximum current is probably so small that it can't give you a bad electric shock.
This pump only requires less than 1/4 watts, its more like 1/8 watt. When I was a kid I made high voltage like this using a "backwards" filament transformer and a pair of 2N255 power transistors.
A function generator IC like the old 8038 or 2026(Ithink), A power op-amp, a pair HV transistors, and a fixed 250dc supply would make an interesying driver.
This might be of value too:
Tiny Inverter Transformer-The Electronic Goldmine
Its not quite 230 volts but I'd bet you can squeeze that little bit more out of it, or buy two (they're cheap) and connect the secondaries in series, now you'll need a pot to trim it down.
I guess at first the concept of turning 2.5V-5VDC into 100-230V seemed like generating more output than the input: something that is impossible. So how can an inverter generate more voltage from a smaller input voltage? Would it be correct to visualize this as a circuit that buffers enough voltage up to 230 and then deliver it at a fraction of the original current so the overall power the the same?
You are correct. You can't increase the power. But power is volts times amps so if you increase the voltage the available current is less for a given power. That's the purpose of a transformer. It performs that conversion.I guess at first the concept of turning 2.5V-5VDC into 100-230V seemed like generating more output than the input: something that is impossible. So how can an inverter generate more voltage from a smaller input voltage? Would it be correct to visualize this as a circuit that buffers enough voltage up to 230 and then deliver it at a fraction of the original current so the overall power the the same?