A device for the melting of highly pure optical glasses andor for the treatment of melts is provided. Cavities, preferably behind the channels and integrated in the solar collector plate, and that can be closed off by the very liquid flow, provide a closed air volume that gives a dampening effect regarding kickbacks and pressure transients in the liquid. The pulse width modulator can receive the multi-level digital signal and provide a variable pulse width signal based, at least in part, on the multi-level digital signal. A transmitter or transceiver is located separately from the device. A conductive beam connects the P layer to the remaining surface mount contact through another via in the silicon substrate. The memory cells are compatible with SOI logic circuitry for use as embedded RAM in SOC applications.