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Frequent questions

  • [FAQ] RF synthesizers: Can I modulate the internal VCO of a RF synthesizer?

    I want to do FM modulation with the internal VCO, is this possible? Can you tell me how to feed the modulation signal to the VCO?

  • [FAQ] How do I design a pulse width modulator (PWM) circuit using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

    Other Parts Discussed in Thread: LM293 How does the PWM example in the data sheet work? What are the limitations of the data sheet PWM example? Is there a way to improve linearity and duty cycle range?

  • [FAQ] How do I design a-stable timer, oscillator, circuits using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

    Other Parts Discussed in Thread: LMC555 , NE555 , LM555 , NA555 , TLC551 , SE555 , TLC552 , TLC555 , SA555 , CD4060B , CD4024B , CD4040B , CD4020B What is the difference between the part numbers? How is the output frequency and duty cycle set? Why is the actual frequency…

  • [FAQ] How do I design monostable timer circuits using LMC555, TLC555, LM555, NA555, NE555, SA555, or SE555?

    Other Parts Discussed in Thread: LMC555 , NE555 , LM555 , NA555 , TLC551 , SE555 , TLC552 , TLC555 , SA555 , CD74HC4060 , SN74LV8154 This FAQ covers mono-stable circuits using the LM555, NA555, NE555, SA555, and SE555 timers that are called LM, NA, NE, SA, and SE…

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