The timing steps of this circuit are indicated by a 7-segment display. The circuit was found in documentation from the 90s. The capacitor next to the 555 determines the timing steges.
This circuit was found in an old Popular Electronics. With it we can check the operation of a...
This circuit is from a documentation from the 90s. The transistor can be any general-purpose FET...
This circuit is from old documentation, but can be easily assembled as components are still...