Found in Datel's documentation from the 1980s, this circuit makes use of the company's operational amplifiers. The circuit can be implemented with any modern equivalent operational.
The sophisticated signal tracker/follower with a JFET and integrated circuit 741 was found in a...
The gain of this circuit is given by the value of R1 that depends on the current in the...
This electronic switch published in the July 1970 Radio Electronics magazine allows the...