Jack Hertz 975 Report post Posted December 26, 2016 The MFOS Alien Screamer circuit consists of three main components: a voltage controlled oscillator, a low frequency oscillator and a one watt amplifier that drives a small speaker. The unit is powered by one nine volt battery and due to the low current drain of the LM324 it gets a lot of miles out of a nine volt battery. View full synthesizer Share this post Link to post Share on other sites
