Wednesday, September 24, 2014

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Generating Stepped Voltage Circuit Diagram

This circuit converts an enter sign into one that may be composed of a number of discrete steps but which re- mains in a different way identical to the enter sign, because the steps are of equivalent peak, the harmonic con- tent of the output sign shall be dependent upon the amplitude of the enter sign.
This characteristic is very useful within the making of electronic tune.

The circuit uses quantitised pulse-width modulation for the including of the step-formed enters sign. Pulse-width modulation is acquired by comparing a triangular voltage with the analogue enter sign by the use of a comparator; the quantitising, that may be the including of the steps, takes place by replacing the triangular voltage with a stepped voltage.  The transistor transfers the rate on C2 to capacitor C4.

Throughout the following part cycle C2 is rerated by means of Dl. ln this manner the voltage across C4 increases in discrete steps, the height of the steps being deter- mined by the ratio C2:4. Whilst the voltage across C4 rises above a certain price, N2 switches transistor T2 on by means of gate N3 and disrates capacitor C4. Whilst the capacitor is completely disrated, N2 switches off T2 and C4 continues to rate again in discrete steps. The stepped voltage uses to the inverting enter of lC2 which is l hooked up as a comparator. Low- move clear out R4/C7 within the output of  lC2 converts the heartbeat-width modulated sign again to an analogue one. The d.c. voltage degree at the non- inverting enter uses by potentiometer P2 to part the significance of the stepped voltage. The environment of P1 depends on the enter sign which should be attenuated such that the maximum price at the slider of Pl is at all times smaller than i the utmost price of the stepped I voltage. The collection of steps can also be decided on by various the worth of C4. lt is imaginable to use a varicap in preference to C4 with the varicap voltage being managed by the tune program or the enter sign. Attention grabbing and person results can also be acquired on this method.



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