Reverse-Engineered! - Elka 410CST1007
Feb 15, 2025
Reverse-Engineered! is an article series where I look at random small pieces of electronics.
What is it
The ELKA 410CST1007 is a low-frequency oscillator module based on an astable-multivibrator circuitry. From what I could find on the internet, it was part of the ELKA Elkatone 700 ‒ one of the many Leslie-Speaker clones of the time.
A full schematic of the ELKA Elkatone 700 can be found here.
Based on this schematic, it seems that the whole purpose of this PCB was to make the Slow/Fast LED on the Elkatone 700s pedal blink either slow or fast.
Why do I have it and where did I get it from
This PCB is one of many analog synthesizers and organ parts I acquired at an auction about 15 years ago.
PCB
Schematic
