AF sine wave generator
As the name suggest an AF sine and square wave generator produces either sine wave or square wave output. It employee a Wein bridge oscillator, sine wave amplifier, square wave shaper, square wave amplifier and attenuator. The schematic arrangement of these blocks is shown below.
The Wien bridge oscillator operates effectively in audio frequency ranges. It produces oscillations whose frequency can be varied by varying the capacitance value of the capacitor of the oscillator. Also the frequency value can be varied in steps by switching in different values of resistors. The oscillations of Wien bridge oscillator are applied to either sine wave amplifier or sine wave shaper through function key. When the key is connected to position 1, the output oscillations are connected to sine wave amplifier and then to attenuator. Therefore, the oscillations are amplified and then attenuated and a pure sine wave is available at the output. Depending on the requirement the amplitude of this sine wave can be varied from 5 mV to 5 V (r.m.s value).
When the key is connected to position 2, the oscillations are applied to square wave shaper which converts the oscillations into square wave. The square wave signal is amplified and then attenuated and finally appears as pure square wave at the output. The amplitude of the square wave can be varied from 0 V to 20 V (peak value).
This generator produces output in the frequency range of 1 0 Hz to I MHz and it requires power of 7 W at 220V, 50 Hz. The front panel of the instrument contains
(i) ON/OFF switch.
(ii)FrequencyMultip1ier: To choose the frequency range over 5 decades (from10Hz to1MHz).
(iii) Amplitude Multiplier: To attenuate sine wave output in 3 decades (x 1; x 0.1 and x 0.01).
(iv) Amplitude: To continuously attenuate the amplitude of square wave output.
(v) Variable Amplitude: To continuously attenuate the amplitude of sine wave output. (vi) Frequency Selector: To select different ranges of frequencies and to vary the frequency in a ratio of 1: 11.
(vii) Function Key: To select either square wave or sine wave output.
(viii) Symmetry Control: To adjust the symmetry of square wave from 30% to 70%
(ix) Sync: To synchronize the internal signal with external signal.
As the name suggest an AF sine and square wave generator produces either sine wave or square wave output. It employee a Wein bridge oscillator, sine wave amplifier, square wave shaper, square wave amplifier and attenuator. The schematic arrangement of these blocks is shown below.
The Wien bridge oscillator operates effectively in audio frequency ranges. It produces oscillations whose frequency can be varied by varying the capacitance value of the capacitor of the oscillator. Also the frequency value can be varied in steps by switching in different values of resistors. The oscillations of Wien bridge oscillator are applied to either sine wave amplifier or sine wave shaper through function key. When the key is connected to position 1, the output oscillations are connected to sine wave amplifier and then to attenuator. Therefore, the oscillations are amplified and then attenuated and a pure sine wave is available at the output. Depending on the requirement the amplitude of this sine wave can be varied from 5 mV to 5 V (r.m.s value).
When the key is connected to position 2, the oscillations are applied to square wave shaper which converts the oscillations into square wave. The square wave signal is amplified and then attenuated and finally appears as pure square wave at the output. The amplitude of the square wave can be varied from 0 V to 20 V (peak value).
This generator produces output in the frequency range of 1 0 Hz to I MHz and it requires power of 7 W at 220V, 50 Hz. The front panel of the instrument contains
(i) ON/OFF switch.
(ii)FrequencyMultip1ier: To choose the frequency range over 5 decades (from10Hz to1MHz).
(iii) Amplitude Multiplier: To attenuate sine wave output in 3 decades (x 1; x 0.1 and x 0.01).
(iv) Amplitude: To continuously attenuate the amplitude of square wave output.
(v) Variable Amplitude: To continuously attenuate the amplitude of sine wave output. (vi) Frequency Selector: To select different ranges of frequencies and to vary the frequency in a ratio of 1: 11.
(vii) Function Key: To select either square wave or sine wave output.
(viii) Symmetry Control: To adjust the symmetry of square wave from 30% to 70%
(ix) Sync: To synchronize the internal signal with external signal.
