Originally designed for WWV (Standard Time Station) signals, it lets 1 kHz tones pass by rejecting the 440 and 600 Hz tones emitted by the station. The circuit is from a 1964 Electronic Design.
This circuit can be used in physics experiments, in ionization and in several other applications. The...
Through digital control, this circuit activates the input filters that have the frequencies...
This VCO or Voltage Controlled Oscillator uses common components. The circuit generates signals that...