We found this circuit in the June 1991 issue of Radio Electronics magazine. The integrated circuit is still available. The table gives the component values.
In the figure we have an inductance bridge for values between 1 and 30 uH at a frequency of 5 MHz....
We found this circuit in the Motorola Linear Databook published in 1990. The circuit can be...
Using a varactor or varicap, this 1969 Electronics World circuit has a modulation range from 75...