Design and Operating principle

Circuit diagrams and board layouts for all versions we developed thus far are listed here.

Ver.1

preAmp3.PNGshaperAmp.PNG

Ver.2

ver2.png
radon_top_v02.jpg radon_bottom_v02.jpg
  • Known problems
    • DC-jack(2 and 3 pins of J1 on the above circuit diagram) is note connected to GND
    • Charge Sensitive amp. doesn't work well due to much noise, probably coming form GND
  • Operation check
    • Connected DC-jack to GND, Operation check of shaper and comparator using Function Generator
    • Input to TP0) : square wave pulse[100mV, 1kHz]
    • Output : from left to right, TP1, TP2, TP7
      CR_RC_palse.JPG CR_RC_CR_palse.JPG :trg.JPG

Ver.3

ver3_latest.png
ver3_top.jpg ver3_bottom.jpg
  • Known problems
    • Same problem as Ver.2 on the connection of DC-jack to GND
    • Regulator should not be fixed on the board because its higher heat
  • Operation check
    • Connected DC-jack to GND, put heatsink to regulator, could see TP2-signal using Function Generator
    • IC1 doesn't work well due to noise coming from MAU
    • Could measure alpha ray from Am and radon if we use a shop-bought pre-amp.
    • Need to check HV module(C4900)

Ver.4

ver4_latest.png
ver4_top.png ver4_bottom.png
  • Used in 2011 Summer Challenge
  • Known problems
    • IC1 doesn't work well due to noise coming from MAU
  • Operation check
    • Could measure alpha ray from Am and radon if we use a shop-bought pre-amp.
    • Need to check HV module(C4900)

Ver.5

ver5_latest.png
ver5_top.png ver5_bottom.png

Ver.6

ver6_latest.png
ver6_top.png ver6_bottom.png

Ver.7

ver7_latest.png
ver7_top.png ver7_bottom.png
omote.png ura1.png

Ver.8

ver8_latest.png
ver8_top.jpg ver8_bottom.jpg

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Last-modified: 2014-07-24 (木) 17:14:21 (975d)