We are working on a project that requires high voltage waveforms of various types, some are custom waveforms. The available AWG we have, and the usual ones available at reasonable cost can't produce higher voltages. So we set out to develop our own, like we've done with other types of test equipment.
The package concept is based upon the low cost JunTek DPA-2698 & DPA -1698 style, these are nice low cost amps that are small, 12V powered and convenient to use. We used the readily available eBay 100m by 70mm by 35mm extruded case, end plates were replaced with custom 3D printed versions.
The electrical design uses 2 of the TI OPA462 HV Op-Amps setup for an overall gain of 10X. We also have a design based upon the APEX PA443, and another for lower voltage, higher current use based upon the LM3866, we haven't assembled these just yet tho.
12 Volt Input boost converted with a MAX1771 converter up to +-85VDC, so the output is capable of providing greater than +-80V peak signals. Low level bandwidth is >500KHz and slew rate limited to ~100KHz.
Works OK for our needs so far
Anyway, here's what it looks like.
Best,