Electric storage heater control circuit - has three stage analog changeover circuit producing outdoor, night and day signals for off=peak supply

摘要

A control circuit for a storage heater supplies electrical power during the off-peak period. A control produces a main signal at given times which is a function of the outdoor temp. and of the time. There is also a master change-over switch in the control for day and night operation. The change-over circuit is controlled via a digital logic circuit and is connected downstream of several analog computing stages. The first computing stage produces a control signal relating to the outdoor temp. The second computing stage produces a control signal during the day period and the third computing stage produces a signal during the night period.