Thomás Jagoda

Electronic engineer passionate about audio. I’m also a pianist, data scientist and mathematician.

Simple tremolo circuit using LDR’s. Besides amplitude modulation, there’s an one pole low pass filter modulation in tandem. LFO is a relaxation oscillator, with “triangle” (more like a sharktooth) and square outputs. The second LED in the BJT collector is used as a “rate” indicator. The trimpot is used to bias the BJT in its “sweetspot”, which may vary depending on the LED/LDR used.

tremolo
A simple optical tremolo

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