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MOS only oscillator using adder and subtractor circuits
In this paper an NMOS based sinusoidal oscillator is presented. The circuit is constructed with voltage-mode (VM) NMOS-based analog adder and subtractor circuits which respectively perform V1+V2 and V1-V2 operations on the ...
Realizations of mutative 4-ports and their applications to memstor simulations
In this paper, in addition to the universal 4-port mutator circuit introduced in  with an adder and a subtractor block, two more 4-Port mutator circuits, one with plus type (CCII+) and minus type current conveyors ...