This high-Q low-pass filter was found in the October 1990 issue of Radio Electronics magazine. The frequency depends on the capacitors used and is on the order of a few tens of hertz.
This High Side Current Sensor was found in a 2005 Linear Technology manual. The current sensing...
The frequency of the tone produced by this oscillator depends on the amount of light falling onto...
This circuit can be used for signaling a panel with a common incandescent lamp. The lamp will...