Found in a 1965 General Electric Hobby Manual, this timer was originally created to operate with photo magnifiers of the time. The circuit can be adapted for other purposes.
This circuit was obtained from the 2005 manual of Linear Technology LT1306. The formulas for...
Pressing S1 by a moment L1 glows up, remaining by a time interval depending on C1. This time...
The circuit shown in Figure bellow generates frequencies of 50 Hz, 100 Hz, and 200 Hz. The circuit uses a...