If you use a gyrator and a capacitor to make a virtual inductor, that inductor won’t magnetically couple to another inductor, real or simulated. There’s no magnetic field to do so.

Make the coils variable if you need trimming, instead of having trimmer capacitors in parallel. Varactors have taken over for many uses. But they won’t handle power.

Since the gyrator forms an inductor to ground at the pin 5 U1B/Rs junction and ground, a parallel LC circuit is implemented with capacitor C_res connected to the gyrator and to ground. Vin drives a ...

Here is a simple, compact circuit for isolating a low power –48V output. The gyrator circuit allows AC signals to ride on the DC output voltage, adding audio signaling capability for communications ...

C2 is a dc blocking capacitor. The UUT includes a current sink, I 1 , and a termination network, R5 and C3. This setup allows designers to perform some typical ac tests, such as return loss, total ...

Then, once multiplied by the inverse of the CTRL node voltage, it mimics our variable capacitor. Fig. 2 shows an actual test circuit used to verify the validity of our Spice model.