Posted by dapj20 on Aug 03, 2021 in 555-Circuits, Digital-Schematics, Microcontroller-Circuits, Oscillator
U1 7555 is a CMOS version of 555. The 555 here is in Astable Oscillator mode, C1 and C4 are decoupling capacitors 0.1uF value, ceramic disc. Mixed and Interface Circuits The output is around 100kHz, If C3 is plastic or mica the frequency output will be… more »