Sunday, March 5, 2017
Simple sound activated / reactive LED circuit with diagram
A very simple sound activated / reactive LED flashing circuit using transistor TIP41C. All you need is the transistor and 12 Volt battery source. In this demonstration I am using the USB 5 Volt as the power source step up using LM2577 DC to DC booster converter to get 12 Volt. The schematic is in the video.
One simple circuit to step up voltage using LM2577 -Adj P+ chip. The schematic is from Texas Instrument and it works expected - and below is...