FIELD: radio engineering. SUBSTANCE: crystal oscillator has active part, transistor 2, first and second capacitors 3, 4, crystal cavity 5, varicap 6, first and second temperature-dependent circuits 7,8 with thermistor, DC voltage divider 9, first and second switches 10,11, and resistor 12; it is also provided with adjustable operating threshold switch 13. EFFECT: improved frequency stability due to more accurate temperature compensation in extending working temperature range. 3 dwg
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SU738099A1 |
Authors
Dates
1994-10-30—Published
1981-07-15—Filed