The circuit shown was found in Intersil documentation from the 90s. The formula allows to calculate the voltage obtained as a function of the values of the resistors.
With this timer we can start between 30 seconds and one and a half seconds, time set in the pot....
Texas Instruments REF33x Voltage References can be obtained from Mouser Electronics. These small...
Found in an Electronics World of 1966 this circuit can be made with current power transistors. It causes...