Posted in Admin's blog

Schematics/Gerber

MadEXP PMT Adapter v2.0 schematic/gerber files plus license. Click on the link to download. MadExp PMT MadEXP PMT Adapter v2.5 schematic/gerber files plus license. Click…

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Posted in Admin's blog

Z80 Single Board Computer

This is my first didactic 8bit – Z80 based computer. I’ve made it because I was interested into homebrew a working computer from TTL chips…

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Posted in Admin's blog

MS-4 γ-selective Geiger counter

This is a γ-selective Geiger counter from the “M” professional serie used also in demonstration devices for measuring the age of minerals by the activity…

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Posted in Admin's blog

SI-16bg

This is equivalent to SBM20 Tech. spec.: ·Radiation determine: beta ( > 0.25 MeV) ; gamma soft/hard ·Voltage of start of counting: 280 – 330…

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Posted in Admin's blog

AC-1 High-sens β-selective Geiger counter

This tube is very hard to find. It’s made from alluminium and glass and is a β-selective Geiger counter. It’s counts only beta’s! Tech. spec.:…

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Posted in Admin's blog

SBM-21 Micro geiger tube

This is the smalles geiger tube I could find. It’s so cute but… so insensitive to the background. It’s a good tube to build around…

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Posted in Schematics & Homebrew

CM108AH USB soundcard on a chip

I’ve found great difficulty to find an application note of this USB soundcard on a chip. I ve decided to share here the info that…

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Posted in Admin's blog

SBM20 The quintessential russian geiger tube.

The SBM20 is the most produced of the russian geiger tubes. Probably it’s also the most produced tube in all world. It’s characteristics and cheapness…

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Posted in Admin's blog

Simple Geiger clicker

This is a simple schematic of a Geiger clicker. It power a Geiger tube with 350-400V and extract/amplify it’s “clicky radiation sound” making it earable….

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Posted in Photomultiplier tubes

FEU84-5 ФЭУ-84-5 PMT photomultiplier tube for gamma spectrometry

I’ve bought a couple of FEU84-5 PMT’s from an eBay seller. I’ve bought because of an occasional low price and because I heard that this…

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