Position: Index > Unclassified >

Precise wave generator

2017-08-23 11:49  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.

The positive and negative peak amplitude is controllable to an accuracy of about ?± 0.01 V by a dc input. Also, the output frequency and symmetry are easily adjustable. The oscillator consists of an integrator and two comparatorsa€”one comparator sets the positive peak and the other the negative peak of the triangle wave. If R1 is replaced by a potentiometer, the frequency can be varied over at least a 10 to 1 range without affecting amplitude. Symmetry is also adjustable by connecting a 50 kfi resistor from the inverting input of the LM118 to the arm of the 1 kO potentiometer.
Precise wave generator

The ends of the potentiometer are connected across the supplies. Current for the resistor either adds or subtracts from the current through Rl, changing the ramp time.

Reprinted Url Of This Article: