Complex sentence: An Active-filter tuned oscillator is an active electronic circuit designed to produce a periodic signal, consisting of a bandpass filter and an active-amplifier such as an OP-AMP or a BJT.
Split into simpler sentences: An active-filter tuned oscillator is an active electronic circuit designed to produce a periodic signal. It consists of a bandpass filter and an active amplifier such as an OP-AMP or a BJT.