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# Converters: Frequency to Voltage

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 1us Light Pulse Discriminator Plus F to V Converter - This circuit is designed to detect the narrow 1uS pulses produced by the above amplifier circuit. The clean logic type pulses produced by the discriminator are then sent to a frequency to voltage converter. The circuit is designed to process a pulse frequency of 10KHz that is frequency modulated by voice audio signals. The circuit is described in more detail in the receiver circuit section of my Handbook of Optical Through the Air Communications. ….(designed by David A. Johnson) 555 Makes Handy Voltage to time Converter - 02/01/01 EDN-Design Ideas: The circuit in Figure 1 is a simple, low-cost voltage-to-time converter using  ubiquitous 555 timer chip. You can use  IC's monostable multivibrator as a voltage-to-time converter by connecting  analog-voltage input to  charging resistor, R, instead of connecting R to VCC. With this modification,.....(design idea) AN-279: Using the AD650 Voltage-to-Frequency Converter as a Frequency-to-Voltage Converter - AN-279 Analog Devices Application Notes  (app note) AN795: Voltage-To-Frequency/Frequency-To-Voltage Converter - Microchip Application Note Published 12-Nov-02  (app note) Circuit Converts Pulse Width to Voltage - 10/25/01 EDN-Design Ideas: The circuit in Figure 1 converts pulse information to a clean dc voltage by the end of a single incoming pulse. In another technique, an RC filter can convert a PWM signal to an averaged dc voltage, but this method is slow in responding. Converting low-duty-cycle pulse information is slower yet.....(design idea) Circuit Converts Pulse Width to Voltage #2 - 10/28/99 EDN-Design Ideas: The circuit is optimized for a positive-going pulse width of1 to2 msec, repeating at intervals of approximately17 msec. The output produces a voltage of0.95V for a1-msec pulse to2.25V for a2-msec pulse.....(design idea) DDS IC Plus Frequency to Voltage Converter Make Low Cost Dac - 02/05/04 EDN-Design Ideas: Precision DACs are essential in many consumer, industrial, and military applications, but high-resolution DACs can be costly. Frequency-to-voltage converters have good nonlinearity specifications—typically, 0.002% for the AD650—and are inherently monotonic. This Design Idea shows how you can use a frequency-to-voltage converter and a DDS (direct-digital-synthesizer)chip for precise.....(design idea) F/V Converter has High Accuracy - 05/12/94 EDN-Design Ideas: (design idea) Frequency to Voltage Converter uses Sample & Hold to Improve Response & Ripple - National Semiconductor Application Notes,28-Jun-1996 (app note) Frequency-to-Voltage Converter uses Sample-and-Hold to Improve Response & Ripple - National Semiconductor Application Note  (app note) Hear Amateurs on Your FM Radio! - (electronic schematic / circuit) LM2907 Tachometer/Speed Switch Building Block Applications - National Semiconductor Application Note 04-Nov-1995 (app note) Monostable Makes Low Cost F/ Volt Converter - 02/18/99 EDN-Design Ideas: The circuit in Figure 1 is a low-cost frequency-to-voltage (F/V)converter. Using a monostable (one-shot)multivibrator, the circuit accepts an open-collector square wave that varies in frequency from 0 to 10 kHz. The one-shot produces.....(design idea) New Phase Locked Loops - (electronic schematic / circuit) Precision Voltage-To-Frequency Converter - AN-C: Application Note CV/F Converter ICs Handle Frequency-to-Voltage Needs,  3-Oct-02  (Application Note) Using the AD650 Voltage-to-Frequency Converter as a Frequency-to-Voltage Converter - AN-279 Analog Devices Application Notes  (app note) Voltage-To-Frequency/Frequency-To-Voltage Converter - Microchip Application Note Published 12-Nov-02  (app note)