Terman et al. (1939, pp. 653–654), §Resistance-stabilized Oscillators Employing Negative Feedback, state "For a discussion of ordinary resistance-stabilized oscillators see pages 283–289 of F. E. Terman, 'Measurements in Radio Engineering,' McGraw-Hill Book Company, New York, N.Y., (1935)." OCLC180980ASINB001KZ1IFK (diode limiting)
Terman et al. (1939, p. 654) state, "This oscillator [Hewlett's] somewhat resembles that described by H. H. Scott, in the paper 'A new type of selective circuit and some applications,' Proc. I.R.E., vol 26, pp. 226–236; February, (1938), although differing in a number of respects, such as being provided with amplitude control and having the frequency adjusted by variable condensers rather than variable resistors. The latter feature makes the impedance from a to ground constant as the capacitance is varied to change the frequency, and so greatly simplifies the design of the amplifier circuits."
Meacham 1938. Meacham1938a. Meacham presented his work at the Thirteenth Annual Convention of the Institute of Radio Engineers, New York City, June 16, 1938 and published in Proc. IRE October 1938. Hewlett's patent (filed July 11, 1939) does not mention Meacham. Meacham, L. A. (October 1938), "The Bridge Stabilized Oscillator", Bell System Technical Journal, 17 (4): 574–591, doi:10.1002/j.1538-7305.1938.tb00799.x. Frequency and amplitude stabilization of an oscillator with no tube overloading. Uses tungsten lamp to balance bridge. Meacham, L. A. (October 1938a), "The Bridge Stabilized Oscillator", Proc. IRE, 26 (10): 1278–1294, doi:10.1109/jrproc.1938.228725, S2CID51651042
books.google.com
Williams (1991, p. 46) states, "Hewlett may have adapted this technique from Meacham, who published it in 1938 as a way to stabilize a quartz crystal oscillator. Meacham's paper, "The Bridge Stabilized Oscillator," is in reference number five in Hewlett's thesis." Williams, Jim (1991), "Max Wien, Mr. Hewlett, and a Rainy Sunday Afternoon", in Williams, Jim (ed.), Analog Circuit Design, Art, Science, and Personalities, Butterworth Heinemann, pp. 43–58, ISBN0-7506-9640-0
Terman et al. (1939, pp. 653–654), §Resistance-stabilized Oscillators Employing Negative Feedback, state "For a discussion of ordinary resistance-stabilized oscillators see pages 283–289 of F. E. Terman, 'Measurements in Radio Engineering,' McGraw-Hill Book Company, New York, N.Y., (1935)." OCLC180980ASINB001KZ1IFK (diode limiting)
Terman et al. (1939, p. 654) state, "This oscillator [Hewlett's] somewhat resembles that described by H. H. Scott, in the paper 'A new type of selective circuit and some applications,' Proc. I.R.E., vol 26, pp. 226–236; February, (1938), although differing in a number of respects, such as being provided with amplitude control and having the frequency adjusted by variable condensers rather than variable resistors. The latter feature makes the impedance from a to ground constant as the capacitance is varied to change the frequency, and so greatly simplifies the design of the amplifier circuits."
Meacham 1938. Meacham1938a. Meacham presented his work at the Thirteenth Annual Convention of the Institute of Radio Engineers, New York City, June 16, 1938 and published in Proc. IRE October 1938. Hewlett's patent (filed July 11, 1939) does not mention Meacham. Meacham, L. A. (October 1938), "The Bridge Stabilized Oscillator", Bell System Technical Journal, 17 (4): 574–591, doi:10.1002/j.1538-7305.1938.tb00799.x. Frequency and amplitude stabilization of an oscillator with no tube overloading. Uses tungsten lamp to balance bridge. Meacham, L. A. (October 1938a), "The Bridge Stabilized Oscillator", Proc. IRE, 26 (10): 1278–1294, doi:10.1109/jrproc.1938.228725, S2CID51651042
HP 2002 HP (22 January 2002), A real gem: HP's audio oscillator patent turns 60, HP; Speaks of Terman's inspiration by Black and his late 1930s graduate seminar about negative feedback and fixed-frequency audio oscillators; Hewlett finishing masters and looking for engineers thesis; hiring San Francisco patent attorney in 1939.
Terman et al. (1939, pp. 653–654), §Resistance-stabilized Oscillators Employing Negative Feedback, state "For a discussion of ordinary resistance-stabilized oscillators see pages 283–289 of F. E. Terman, 'Measurements in Radio Engineering,' McGraw-Hill Book Company, New York, N.Y., (1935)." OCLC180980ASINB001KZ1IFK (diode limiting)
Terman et al. (1939, p. 654) state, "This oscillator [Hewlett's] somewhat resembles that described by H. H. Scott, in the paper 'A new type of selective circuit and some applications,' Proc. I.R.E., vol 26, pp. 226–236; February, (1938), although differing in a number of respects, such as being provided with amplitude control and having the frequency adjusted by variable condensers rather than variable resistors. The latter feature makes the impedance from a to ground constant as the capacitance is varied to change the frequency, and so greatly simplifies the design of the amplifier circuits."
Terman et al. (1939, pp. 653–654), §Resistance-stabilized Oscillators Employing Negative Feedback, state "For a discussion of ordinary resistance-stabilized oscillators see pages 283–289 of F. E. Terman, 'Measurements in Radio Engineering,' McGraw-Hill Book Company, New York, N.Y., (1935)." OCLC180980ASINB001KZ1IFK (diode limiting)
Terman et al. (1939, p. 654) state, "This oscillator [Hewlett's] somewhat resembles that described by H. H. Scott, in the paper 'A new type of selective circuit and some applications,' Proc. I.R.E., vol 26, pp. 226–236; February, (1938), although differing in a number of respects, such as being provided with amplitude control and having the frequency adjusted by variable condensers rather than variable resistors. The latter feature makes the impedance from a to ground constant as the capacitance is varied to change the frequency, and so greatly simplifies the design of the amplifier circuits."
Meacham 1938. Meacham1938a. Meacham presented his work at the Thirteenth Annual Convention of the Institute of Radio Engineers, New York City, June 16, 1938 and published in Proc. IRE October 1938. Hewlett's patent (filed July 11, 1939) does not mention Meacham. Meacham, L. A. (October 1938), "The Bridge Stabilized Oscillator", Bell System Technical Journal, 17 (4): 574–591, doi:10.1002/j.1538-7305.1938.tb00799.x. Frequency and amplitude stabilization of an oscillator with no tube overloading. Uses tungsten lamp to balance bridge. Meacham, L. A. (October 1938a), "The Bridge Stabilized Oscillator", Proc. IRE, 26 (10): 1278–1294, doi:10.1109/jrproc.1938.228725, S2CID51651042
smecc.org
Sharpe n.d. Sharpe, Ed (n.d.), Hewlett-Packard, The Early Years; Hewlett graduated from Stanford and spent a year doing research; then he goes to MIT to get his masters. Hewlett joins the army, but is discharged in 1936.
Sharpe n.d., p. ???[page needed]; Packard remembers first demonstration of the 200A in Portland. Sharpe, Ed (n.d.), Hewlett-Packard, The Early Years; Hewlett graduated from Stanford and spent a year doing research; then he goes to MIT to get his masters. Hewlett joins the army, but is discharged in 1936.
Sharpe n.d., p. xxx[page needed] Sharpe, Ed (n.d.), Hewlett-Packard, The Early Years; Hewlett graduated from Stanford and spent a year doing research; then he goes to MIT to get his masters. Hewlett joins the army, but is discharged in 1936.
Terman et al. (1939, pp. 653–654), §Resistance-stabilized Oscillators Employing Negative Feedback, state "For a discussion of ordinary resistance-stabilized oscillators see pages 283–289 of F. E. Terman, 'Measurements in Radio Engineering,' McGraw-Hill Book Company, New York, N.Y., (1935)." OCLC180980ASINB001KZ1IFK (diode limiting)
Terman et al. (1939, p. 654) state, "This oscillator [Hewlett's] somewhat resembles that described by H. H. Scott, in the paper 'A new type of selective circuit and some applications,' Proc. I.R.E., vol 26, pp. 226–236; February, (1938), although differing in a number of respects, such as being provided with amplitude control and having the frequency adjusted by variable condensers rather than variable resistors. The latter feature makes the impedance from a to ground constant as the capacitance is varied to change the frequency, and so greatly simplifies the design of the amplifier circuits."
