Low frequency oscillator (LFO) Published 10/11/2015 by H&G Amplifiers This BC547 transistors built a Low Frequency Oscillator, with LED indicator. Low Frequency Oscillator circuit Test video: Spread the love 2 2Shares Published in Circuit and Electronics bc547circuitlfolow frequencyoscillator Previous Post Metal Simplex Fuzz with 2n3904 Next Post DC to DC converter