Used with telephones at the time, this circuit was found in Popular Electronics from the 90s. The circuit causes the LED to stay on until S1 is turned off.
Visual dialing indicator (CB9296E)
- Details
- Written by: Newton C. Braga
Used with telephones at the time, this circuit was found in Popular Electronics from the 90s. The circuit causes the LED to stay on until S1 is turned off.
