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I need to build a circuit that will output 50 KHz pulses of a 0-100 volt (50 volt amplitude, 50 volt offset) of a 5 KHz sine signal with every other pulse inverted. In essence, it will have the shape as in the following picture with a larger amplitude.

enter image description here

My issue is the current. In addition to the high voltage, this signal needs to be output at 10 amps. My approach has been to take two separate signals, and add them together on a smaller basis. I did this in the simulation below by using a differential amplifier. However, I have not found an op-amp that can put out the power I need.

I have also considered using an H-bridge. This works with a small scale signal, but the transistors cause the signal to lose their shape at a higher amplitude. Creating the signal on a small signal followed by amplification has proved difficult since the signal has both positive and negative voltages.

Any suggestions?

Thanks in advance.

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  • \$\begingroup\$ You will probably get better answers if you explain why you need this signal. It appears to be a sampled AM signal. \$\endgroup\$ – Barry Jan 11 at 22:49
  • \$\begingroup\$ I need the signal for some acoustics research with this as the output. The medium I am using to create the acoustics is 8 ohms and not as efficient as your typical speakers. \$\endgroup\$ – A. Snyder Jan 11 at 22:56
  • \$\begingroup\$ 1kW class E amp without the filter. \$\endgroup\$ – Sunnyskyguy EE75 Jan 12 at 9:13
  • \$\begingroup\$ Thanks for the input, Sunnyskyguy. Correct me if I'm wrong, but my understanding of Class-E amplifiers is that they do not handle negative voltages well. Is this the case? \$\endgroup\$ – A. Snyder Jan 14 at 21:34

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