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56 ~ 512kHz high frequency oscillator

2016-08-06 18:02  
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56 ~ 512kHz high frequency oscillator
56 ~ 512kHz high frequency oscillator
The chart shows the 56 ~ 512kHz high frequency oscillator. It consists of high-frequency oscillator, the alarm circuit. 1. Specifications: (1) Frequency range: 56 ~ 512 kHz; (2) Output Level: +5.5 ± ldB; (3) Frequency Accuracy: less than ± 20Hz; (4) warning signal: when stopping vibration, the warning light turns on and the circuit emits alarm sound. (5) Operating temperature: 0 ~ +45 ℃ assurance indicators, -10 ~ 0 ℃, +45 ~ +50 ℃; reliable working components’ choice: Transistor VTl ~ VT4: 3DGl01C, β = 65 ~ 85, VT5 ~ VT6: 3DGl308 , β = 85 ~ 115. Crystal SJT: the model is 101 quartz crystal, crystal with t feet that is GZC7-F. The choices of capacitors Cl and C4 are according to the attached table.