This high-impedance headphone circuit was found in a 1990s William Sheets. The power is low, but the high input impedance makes it useful for radio applications.
This circuit was found in the July 1969 Radio Electronics magazine. The circuit controls resistive...
August 2017 - Mouser Electronics is announcing the availability of TDK ICS-52000 microphones with...
The oscillator of this circuit operates around 8 MHz, but the output will be at a frequency three times...