Found in a 1964 Electronic Design, this circuit is intended to serve as a time base for cardiac monitors. Transistors support equivalents.
We find this circuit in a 2005 Linear Technology manual. The circuit applies to small DC motors...
This 12V battery charging circuit automatically shuts off at the end of the charge. The disconnect...
This is one of many Morse code audio oscillators that can be found in this section. The circuit...