9 Electronic controllers and regulation apparatus, in particular for controlling and regulating heat pumps, namely, voltage regulators, power regulators in the nature of power controllers and current regulators in the nature of electric current control devices; power electronics devices, apparatus and instruments for switching, converting, regulating and controlling electricity, namely, power switches, differential switches, electric current switches, electric switches, electrical switches, current converters, electronic currency converters, electric power converters, dc/ac power converters, electric converters, direct current converters, voltage regulators, static voltage regulators, voltage regulators for electric power, electrical controlling devices, power controllers, electronic control systems for engines, apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current, namely, batteries, electric current controlling devices, electric control panels