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A Pulse forming network (PFN) converts direct current or alternating current to continous directional square pulses at high energy levels of high frequency. A pulse forming network circuit for storing energy in a thyratron modulator uses essentially a short section of an artificial transmission line. The output pulse is then applied to an oscillating device, such as a magnetron. Use of transformers in specific numbers can achieve an efficient match between a klystron and the pulse-forming network.Used for:
Type "E" is the most generally used. Type "E" networks have equal capacitance per mesh. Type "E" networks have mutual inductance between adjacent coils.
1 See also
- Pulse-code modulation
- Pulse-position modulationPulse-position modulation is a form of signal modulation in which the message information is encoded in the temporal spacings between a sequence of signal pulses. This method is not used very frequently, because other methods are usually more suitable for
- Pulse-width modulationPulse-width modulation is a way to represent data over a communications channel. With pulse-width modulation, the value of a sample of data is represented by the length of a pulse. Pulses of various lengths (the information itself) will be sent at regular
- Pulse-density modulationPulse-density modulation or PDM is a form of modulation used to represent an analog signal in the digital domain. In a PDM signal, specific amplitude values are not encoded into pulses as they would be in PCM or PWM. Instead it is the relative density of
2 External links and references
- "Pulse Forming Networks". Plastic Capacitors, Inc.
- Goldwasser, Samuel M., "Pulse Forming Network 1". (A PFN1-SCH 1.1 / PFN1) September 29, 2000. ( PDFPDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function TLAs.)
- Eric Heine, "Conversion". NIKHEF Electronic Department, Amsterdam, The Netherlands.
- Wolff, Christian, "Modulator Switching Device".
- "Pulse power system design". United Defense, Arlington, VA.
- Riepe, Kenneth B., "High-voltage microsecond pulse-forming network". Review of Scientific Instruments Vol 48(8) pp. 1028-1030. August 1977. (Abstract)
