Found in a 1991 PE Hobbyst Handbook, this circuit activates an oscillator that deactivates at the end of the programmed time. Transistors are commonly used.
This circuit produces the ticking of a clock on a common piezoelectric transducer. The circuit has an...
The basis of this circuit is a double T in the feedback, which has the components calculated to...
This configuration was found in the Texas Instruments optoelectronics manual. PNP transistors...