Square Wave Generator with Voltage-Controlled Frequency Based on Universal Current Conveyor
نویسندگان
چکیده
A novel square wave generator (relaxation oscillator) with controllable frequency is described. It employs two universal current conveyors (UCC) and grounded passive elements. The generator includes integrator with two integration capacitors that alternate in charging which results in linear and precise control of frequency by voltage. New implementation of UCC with attractive properties in CMOS 0.18 μm technology is also presented. Computer simulations in PSpice environment confirm the theoretical assumptions. Streszczenie. W artykule przedstawiono nowy generator fali prostokątnej o regulowanej częstotliwości, zbudowany na bazie dwóch przekaźników prądowych (UCC) oraz elementów pasywnych. Opisano także zastosowanie technologii CMOS 0,18um do przekaźników. Dokonano weryfikacji symulacyjnej w programie PSpice. (Generator fali prostokątnej o napięciowym sterowaniu częstotliwością oparty na uniwersalnych przekaźnikach prądowych).
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