This high impedance step suggested by an English publication can operate up to 1 MHz with 1 V rms output. Input impedance is 1 M ohm.
April 2017 - Microchip's new PICLF153 microcontrollers that already incorporate analog and...
Found in a 1980s documentation, this amplifier uses an integrated circuit of the era. The RLC...
We found this circuit that converts a direct voltage into a proportional frequency signal. The...