Voltage Controlled Duty-Cycle Circuits

Applications of Timer Integrated Circuits

“…The ramp voltage appearing at pin 2 (12) makes excursions between 0 and w (y) with the rate xlRC (;iRq. Therefore, the timings~,B shown in Fig 16(b) are given bỹ = RC(rolx); T B = ROyli) (10) Hence, period T and frequency fare 7.…”

“…Two simpler and more economical circuits that have continuous linear voltage control over the duty cycle [10] are described in Section 4.…”

“…(2/3) E cc 'Hence, under this condition w (or y) = (2/3)E cc should be substituted in Eqns(10) and(11(b) depicts the waveforms for the multi ofFig 16(a). The circuit operates as follows:Initially assume that the discharge transistor(~) inside the left (right) timer 1;.…”