Throughout the testing of audio programs and telephone-like programs, it’s helpful to have a sinusoidal sign generator that produces ahead and inverted indicators within the vary of round 15Hz to 15kHz. Right here is one attainable method of constructing that sign generator.
This sign generator will also be used as a sine wave oscillator, a phone amplifier, or a low-frequency audio amplifier/driver, and so forth. Right here we are going to attempt to make a fixed-frequency sine wave oscillator that produces 4 frequencies.
IC LM272 is a low-cost, easy-to-use, unity-gain, secure, dual-power operational amplifier (op-amp) that’s primarily utilized in management purposes like servo motors, energy provides, compact discs, VCRs, and so forth. However LM272M used on this circuit can do far more than that.
This challenge might be revealed in just a few weeks. If you wish to entry it now, check with Electronics For You’s August 2022 Difficulty–print or ezine version.
