RF-Radiation Detector Circuits
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April 2006 was the twentieth anniversary of the Chernobyl reactor accident. In the days following the incident winds deposited much of the reactor contents across central Europe, Scandinavia and the UK. A large area surrounding the reactor is still off.... -
Low frequencies predominantly cover our earths atmosphere. This range of frequency may be created by many different sources which may be quite unknown and strange, a VLF sensor equipment can be made to trace these frequencies for investigating the intriguing.... -
One of the most unfortunate features of the usual portable Geiger counter is the short life of the expensive high-voltage batteries.. -
It uses very common building blocks. The high voltage power supply is a classical oscillator circuit used in many places where a low current and high voltage is needed. TR is a step-up transformer salvaged from a xenon light circuit. You can find simmilar.... -
This experiment has two main objectives. First, we will become familiar with the characteristics of the Geiger-MG ller (GM) tube, including the properties of threshold, starting and operating voltages, GM plateau region and plateau slope. Then we will use.... -
These power supply circuits are generating 500 volts but they may be modified to supply a couple of hundred to nearly 1000 volts by changing the zener diodes. These circuits generate high voltages and can cause dangerous shocks! Do not build these devices.... -
The Geiger counter is a scientific instrument that can detect ionising radiation such as alpha and beta particles and gamma rays. It`s capable of detecting a single particle and although relatively simple is thus exquisitely sensitive [1]. Radioactivity was.... -
The OpenRelief project is building open, modular information solutions for disaster relief , and as part of which they`re developing a range of network-enabled sensors. I offered to help out by prototyping a radiation detector, opting to use an ionisation.... -
I saw a cool app-note from Maxim that described a gamma-photon detector which used a regular PIN-diode as a sensor. The actual circuit looked simple enough so I decided build it, you can never have too many measurement instruments right?.... -
This pdf file shows the schematic diagram of my home-built circuit to drive the PDR-56 probe. A JKL BXA-12579 inverter commonly used to drive cold-cathode fluorescent lamps is used as the high-voltage power supply. The BXA-12579 produces 1, 500 VACRMS for a.... -
The recent tsunami in Japan and the on-going calamity with the Fukushima nuclear power plant has apparently greatly increased sales of radiation meters, n.... -
A simple tool to check the degree of radiation from an electric or electronic instrument. The LEDs in the circuit will give a running light pattern at the moment the circuit senses electromagnetic radiation from the device. It can detect radiation from the.... -
The basic charging circuit produces in excess of 500V+, depending on the inductor used, leakage of various components, etcetera. The current output is limited by a 10Mohm resistor, which keeps short-circuit current under ~60uA. Thus this is a relatively safe.... -
Analog Geiger Counters are useful for detecting radioactivity and performing nuclear experiments. The GCK-01 model has numerous customizable options and comes as a ready to build kit. These Geiger Counters primary indicators are an audio click and an LED.... -
Publishing this one in a hurry, in case it is useful to our friends in Japan. This is a simple Geiger counter circuit. It does require some speciali.... -
A PIN photodiode, four low-noise op amps and a comparator are used to detect individual photons of gamma radiation. The schematic, design considerations and component selection are discussed.... -
With the recent events at the Fukushima Dai-ichi nuclear power plant, I thought it would be pretty cool to build a Geiger Counter and hook it up to my NerdKit for interfacing with my computer. I`ve found this article which explains the building process.... -
Because the recent events in Fukushima, Japan, brought a lot of concern on radiation levels, by popular demand, here is a simple Geiger Muller counter using the Russian tube SI-22G and a single transistor regulated inverter that puts out 400V, as required..... -
An efficient, stable, easy to build construction for all your radiation dosimetry needs. I started from scratch, designing a complete dosimeter unit around the Atmel Atmega8 microcontroller and a Russian Geiger Muller tube. Here you`ll see the CTC-1 tube,.... -
Here is another little circuit I designed for radiation logging purposes. It is based on an Atmel 168 Microcontroller and a small and precise RTC device called RV3029. I also used an AT45DB41 Dataflash for this Circuit, as I had the sourcecode for....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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