2024_11_tme

Geiger Counter (T319E)

Details
Written by: Newton C. Braga

 

     This circuit is from 1969.R1 and R2 are 4.7 M and R3 is 1.2 M. C1 C2 is 22 nF and battery B1 is 300 V. B2 is 1.25 V. The tube is not easy to get these days.

 


 

 

 

 

  

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Datasheets


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