This circuit is from the 80's documentation. The integrated circuit is from the time but can be implemented with modern equivalents. The power supply must be symmetrical.
This simple oscillator with two general-purpose transistors has its frequency given by capacitor...
We found this circuit in the Linear Applications Handbook by National Semiconductor. The base is...
This is a very simple configuration with a power transistor to control a DC motor from 3 to 12 V...