This circuit is from a Fairchild digital clock module shown in the March 1977 issue of Radio Electronics magazine. The circuit required a few external elements, including a common transformer.
The previous circuit (CB15629E) can be changed to generate a sawtooth signal synchronized...
This is a factory circuit from an 80's manual. The circuit can be implemented with modern...
January 2017 – The bq35100 integrated circuit, a charge monitor and EOS for non-rechargeable...