Hi guys,
I wanted to thank the senior members of the forum who are amazingly helpful !
I am looking for a audio frequency (100hz - 20khz) transformer capable of
taking a roughly 12v peak to peak signal to 2000v peak to peak. budget is somewhat of an issue, i am trying to keep costs for this part < $50.
The application is a scientific instrument that requires high voltage, low curren t AC pulses (more or less sine wave shaped) , where the key parameter is the voltage, so i am worried less about noise and frequency shifting issues.
I plan to drive this transformer from an audio amplifier which i in turn drive from a signal generator.
The current output requirements are roughly 100ma, this is flexible, i could go as low as 10ma. Thanks to #12, a senior member here, I am looking at a 70w transformer: (P=Vrms*I=1000*0.707*0.1)
I am trying to absorb a lot of information about transformers in a short amount of time, hence i appreciate your tolerance to my probably fundamental questions.
It seems from a search in mouser/digikey that when choosing an AF transformer, it is the impedance ratio that matters more than the output voltages. I am assuming that this is because the purpose of a transformer in audio circuits is imp.matching.
On the other hand, flyback transformers seem to work at these high voltages and more, but they typically operate on a higher frequency band (>100khz) and if i understand correctly, the frequency of the output is not exactly related to the input signal, so i cannot easily control it.
Am i missing something fundamental which dooms my search for 2kv p2p, audio frequency transformer ?
At the end of the day, i am almost ready to roll my own like this gentleman shows http://www.sm0vpo.com/power/diy_transformers.htm
But i am wondering if there is a better way.
Thanks for all your advice.
Kind regards,
Lenny
I wanted to thank the senior members of the forum who are amazingly helpful !
I am looking for a audio frequency (100hz - 20khz) transformer capable of
taking a roughly 12v peak to peak signal to 2000v peak to peak. budget is somewhat of an issue, i am trying to keep costs for this part < $50.
The application is a scientific instrument that requires high voltage, low curren t AC pulses (more or less sine wave shaped) , where the key parameter is the voltage, so i am worried less about noise and frequency shifting issues.
I plan to drive this transformer from an audio amplifier which i in turn drive from a signal generator.
The current output requirements are roughly 100ma, this is flexible, i could go as low as 10ma. Thanks to #12, a senior member here, I am looking at a 70w transformer: (P=Vrms*I=1000*0.707*0.1)
I am trying to absorb a lot of information about transformers in a short amount of time, hence i appreciate your tolerance to my probably fundamental questions.
It seems from a search in mouser/digikey that when choosing an AF transformer, it is the impedance ratio that matters more than the output voltages. I am assuming that this is because the purpose of a transformer in audio circuits is imp.matching.
On the other hand, flyback transformers seem to work at these high voltages and more, but they typically operate on a higher frequency band (>100khz) and if i understand correctly, the frequency of the output is not exactly related to the input signal, so i cannot easily control it.
Am i missing something fundamental which dooms my search for 2kv p2p, audio frequency transformer ?
At the end of the day, i am almost ready to roll my own like this gentleman shows http://www.sm0vpo.com/power/diy_transformers.htm
But i am wondering if there is a better way.
Thanks for all your advice.
Kind regards,
Lenny