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.
The purpose of this circuit is to add millivolt scales to a common multimeter. Used transistors are...
The circuit presented is from the 1993 Linear Technology Applications. The components used were...
In fact, the maximum output current of this source depends on the transformer which can be 6, 7.5, 9...