13-8nic(Negative-impedance- converter(负阻抗变换器))

current of one port into the voltage of the otherport and vice verse. U1 =-ais \2 =ai..gyration constant

13-6 Interconnection of two-ports 1. Series connection

the open-circuit reverse voltage gainthe open-circuit transfer admittancethe short-circuit transfer impedancethe short-circuit reverse current gain

the short-circuit input impedance I12=0 the short-circuit forward current gain I1V2=0 Let 1=0 he open-circuit reverse voltage gain I1=0 the open-circuit output admittance

are parameters The matrix from of parameter equations:

Let us add and subtract on the right side of I2 we have

parameters equivalents admittance parameters. They parameter equivalents matrix form:

The readings of three watt-meters Ax =v an+lnx vBx=vbn+lnx vc=von+v Nx (UANia tUBvibB+Uvicdt+l(uN(ia tibB +ic)dt T Jo aNaA foBNLbB +Uvic)dt The sum of the average powers taking by the three-phase loads

If a positive current is flowing into the(+) end of the current coil while the(+) terminal of the voltage coil is positive with respect to the unmarked end, an upscale reading is obtained