Demonstrating device for frequency-conversion sine alternating current characteristics
A technology of sinusoidal communication and demonstrator, applied in the field of teaching aids
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[0016] Such as figure 1 , figure 2 as well as image 3 As shown in the frequency conversion sine AC characteristic demonstrator, the power supply part 1, the indicating part 2 and the demonstration part 3 are characterized in that: the power supply part 1 is composed of a triangular wave generator connected in sequence, a sine wave forming circuit, and a sine power amplifier circuit. The indicating part 2 includes a two-digit digital frequency meter, the frequency test signal comes from the square wave signal of the comparative amplifier, and also includes an external port 4, which is connected to an oscilloscope, and the demonstration part 3 includes parallel load circuits R, L, C Each branch is connected in series with one small light bulb 5 respectively. The triangular wave generator is all composed of split devices, and the triode V1 and the triode V2 form a comparative amplifier to generate a square wave signal. The frequency adjustment potentiometer RP1 forms an inte...
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