Re: How to find an audio transformer, step up from 8ohm to 1
Hallo ppls,
I think a power Amp solution is for you even so good as the must other piezo ppls!
But be car with op amps, you need (as I wrote it over their lines) some boosters (I mean voltage & current), han typicaly are piezos in bridge driven= you have (of course from two cards) the double voltage swing...
W
What you tell "piezo`s capacitance is with inductance to sgunt" = you must find out the systems (piezo with load) resonance frequency & drive it at that frequency, then is your efficience the bet
Search pls for "HV Amps/Piezo driver circuits" >> you will see, its possible to build a relativ simple pwr amp with i.e. +/- 100-150V as pwr amp, this amp in bridge is surly "enough" for your application.
If you has the system measured, you will know better the parameters and it will light to reduce the specs/make compacter the driver (and cheaper) amp for the end solution
...
Will be as a (serie) product pls?
K.
Added after 7 minutes:
Power of 5W on 1k load requires 200Vpp or 200mApp. There exist no opa to satisfy this requirements...
...Off course you must make this transformer yourself.
Hali Borber,
Of course their dont exist as small integrated one, or simple op amp_ but as dedicated from i.e. Apex IT EXISTS!
Other question is the price...
I would not much make with a transformer, their way is to problematic!
Other impedance maching solutions are to select_as i.e. "PI filter"_ her is the capacitance of piezo good to use as same part of hes impedance maching element...
These all will nice much things give to solute & make
K.