Main benefits of this circuit over existing EL drivers:
1. No loud 3KHz audible whistle noise. The transformer(s) in this circuit run at >1MHz, and do not produce audible noise. There is a small amount of noise from the EL wire/panel itself, but it's much less noticeable than typical EL drivers.
2. Smooth 7-bit or 8-bit grayscale control of each EL segment at >60 frame/second.
3. When powering 32 EL segments from the 64 channels (or 4 segments from 8 channels), the waveform from each pair should be balanced (no DC bias). The firmware doesn't take special care to always produce a balanced pair, but it's close, so there could be some improvement, and the hardware fully supports it.
4. All SMD. Total circuit height is 2.5mm.
Ben Krasnow
Tijl Schepens
Gammaroll
Hi Ben, this is kind of unrelated to the driver but have you ever experimented with prussian blue and pedot:pss in the context of flexible (fabric) electrochromic displays.
On the spectrum of science to engineering it seems to be a bit to much on the science side for me :)
Regards,
Toon