The SF-LFO is a 3hp all analog low frequency oscillator. It has three rate settings capable of 3 minutes and 30 seconds a cycle up to audio range at 20 hz. Triangle waves can be skewed between saws and ramps, and square waves pulse width can be adjusted. The LFO’s unique feature is voltage controlled cross fading between skewable sine and square waveforms. Bicolor led provides constant display of positive and negative voltage crossings.
10vpp waveform outputs
+12v: 15mA, -12v: 15mA
$80 built, $50 kit, $20 pcb/panel
currently only available at thonk, synthcube, and wurlys