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What happens to the signal after the Frequency Modulation Input?

April 26, 2017Frequency happens input modulation signal

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What happens to the signal after the Frequency Modulation Input?

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The voltage that you apply at the Frequency Modulation Input is amplified by an analog high-voltage amplifier, and then applied to the piezo. This circuit does not have a DA converter. Therefore, you should see a smooth fine-frequency tuning response when you apply an analog signal to the Frequency Modulation Input.