Method of dominant combination in passive atomic frequency scale system and its device
A technology of atomic frequency standard and combination of advantages, applied in the direction of automatic power control, electrical components, etc., can solve the problems of increasing the size, weight, power consumption, and restricting applications of the whole machine, achieving light weight, reduced contribution, and low power consumption Effect
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[0065] 1. Part selection
[0066] *79Hz frequency selection amplifier 10 chooses OP07.
[0067] *The first latch 13a and the second latch 13b use SN74F374
[0068] * Travel time counter 14 selects SN74F161A for use.
[0069] *MCU 15 selects AT89C52.
[0070] *Digital-to-analog converter 16 selects AD8122 for use.
[0071] *D flip-flop 19 selects SN74F74.
[0072] * Square wave shaper 11 selects MAX913.
[0073] 2. Experimental results
[0074] Depend on Image 6 It can be seen that the simulation physical model consists of band-limited white noise 21, subsystem 22, band-pass amplification gain 23, first transfer function 24a, second transfer function 24b, first gain 25a, second gain 25b, linear growth 26, crystal oscillator noise 27. Oscilloscope 28 and simulation output 29. The connection relationship of each component is: the band-limited white noise 21 is sequentially connected to the band-pass amplification gain 23, the first transfer function 24a, the first gain 2...
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