Found in documentation from the 1990s, this circuit converts 12 V to 9 V from a car's power output. The 100mA current eliminates the need for a heatsink on the transistor.
This oscillator for the practice of telegraphy provides a good sound in a loudspeaker, with only...
This ultrasonic insect repellent was found in American documentation from the 1980s. The...
The short-wired circuit is suggested by National Semiconductor in documentation on the LM3909. The power...