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Hi Skogsgurra, thanks for the transformer idea. I thought of it and may come back to it if the high-voltage transistors I'm looking at don't work out. When I said "resonate out the capacitance," I meant to vary the inductance values in order to achieve broadband. But it's just one idea on the...

Correction: that should say: I try to remember that I don't *know* everything

Hello Skogsgurra, thanks for your input and help. I try to remember that I don't everything (quote from your reply: "you cannot convince me or any other visitor..."). This helps me avoid making sweeping conclusions or labeling anyone. I think we know little of others or their circles. After...

A few posts above it should say "tens of KHz" not "thousands of KHz."

Hello Skogsgurra, yes it's true that the piezoelectric transformer is not a "relay" to be exact. But the basic idea is that I'm using a small voltage to either control (relay) or generate (transformer) a larger voltage. Either way would work for my application. It is possible to resonate out a...

Yes, I was considering using a piezoelectric transformer, which essentially acts like a relay. An input of low voltage is transformed to as much as several KV at thousands of KHz (ex. see this piezoelectric transformer: SMSTF68P10S9). However, in examining this approach, there appears to be some...

Actually, the load capacitance is closer to just 1 pF.

Thanks all for the response. Yes, the intent is to be able to set the frequency of the control signal to any value between 100 Hz and 100 KHz. I did find a MOSFET transistor that switched up to 1.5 KV at more than 100 KHz (STP4N150), but I've yet to find one that goes up to 5 KV and 100 KHz. I'm...

VE1BLL, thanks for the info. I'll read it again more closely. In the meantime, I welcome any other ideas from anyone.

Is it possible to use a piezoelectric transformer to step up voltages of 3 to 12 volts to as much as 5 kilovolts? Below are more details of what I would like to do: Input into transformer: square waves, 0 to 12-volt amplitude with frequency range of 100 Hz to 100 KHz Output from transformer...

I am looking for a switch or relay to switch high voltages on and off based on a digital input signal. Below are the characteristics of the device. Switching frequency: 100 Hz to 100 KHz Input (control) signal: square waves, 3 to 12 volts amplitude, 100 Hz to 100 KHz range Input voltage to be...