How to build a Tesla Coil #4
A small spark gap tesla coil, a good example for an relaxation oscillator.
Rewind a Microwave Oven Transformer
How to rewind a MOT transformer for a high current low voltage power supply.
Wireless Power Transmitter
A wireless power transmitter used to send electrical energy without wires. It uses induction, an emitter and a receiver working on the 63.1KHz frequency.
Electronic Ballast for fluorescent lamps
A simple electronic ballast running on 220V designed to work with up to four small power fluorescent lamps
Vacuum tube tesla coil (VTTC) using Russian GI-30
A vacuum tube tesla coil built around the Russian tetrode GI-30. My first VTTC and my first vacuum tube circuit, and some very rewarding results.
DIY/Homemade Geiger Muller Clicker V1
An article presenting a simple DIY Geiger Muller counter using the Russian tube SI-22G and a single transistor regulated inverter that puts out 400V, as required by the tube. A very basic detector assembled in 5 minutes. See an operation comparison to the Radex RD1706.
Thyratrons
An article on Thyratrons and a film showing three energized tubes : the 714, the 309/FG17 and the ELC1B.
Simple DIY Induction heater
A Royer oscillator with 2 IRF540 N-Channel mosfets, a 0.47uF Capacitor and a 1500uH inductor used for an induction heater. The mosfets remain cool, even with such small heatsinks.
Multitester using ATMega8 and HD44780 LCD
An Atmega8 multimeter that can measure Transistors: Bipolar/Mosfet , Diodes and Double Diodes , Resistors, Capacitors: between 0.2nF to 7300μF, Triacs and Thyristors.
NaI Scintillation Probe and Gamma Spectroscopy
A scintillation probe enclosing the regulated high voltage supply, the signal amplifier, the photomultiplier and the scintillation crystal (NaI). Building a DIY counter for a NaI Scintillation probe. AtMega8 and a bluetooth module for wireless data output. A cheap and easy to build homemade dosimeter with applications in spectroscopy.
High Current Inverter using ZVS
Use a ZVS Driver as an invertor for a high current supply.
Marx Generator 200KV discharge – artificial lightning
See a 200.000 Marx generator in action. 20cm discharges!
High Voltage Power supply – 50KV
My homemade high voltage power supply that can provide aprox. 50KV for 12V in.
Android Bluetooth controlled robot – Part 1
Learn to connect a bluetooth module to an ATMega micro controller via the UART serial interface and even further, discover it using a bluetooth enabled Android phone. The 9600bps serial link established, can than be used to exchange data: read sensors or control the robot.
High Voltage Multiplier (Half Wave Villard Cascade) 28 STAGES!
Build a Half Wave Villard Cascade of 28 Stages. That means for 10KV in you get (in theory) 280KV out! An incredible voltage, perfect for physics experiments.
Webcam Surveillance with motion detection algorithm
A homemade/DIY security system using a webcam, a low power server and a surveillance software.
Kvarts DRSB-01 Dosimeter
The DRSB-01 is a simple Geiger Counter device that can be used to detect normal vs. dangerous levels of ionizing radiation (gamma and beta).
Homemade mini-itx server
See how to build a case for a mini-itx computer board. A lot of processing power in a tiny box.
Peltier thermo-electric cooler
Use a Peltier cooler and electricity of pump heat and freeze water.
Victoreen CDV700 6B Dosimeter Mod (Audio/BNC Connector)
The CDV700 dosimeter variant 6B (newer) and a few mods to improve functionality: audio connector and bnc connector.
Tube: SI-14B (CИ-14Б) Pancake Geiger Muller
The Russian SI-14B is a highly sensitive pancake geiger muller tube .
Variable regulated power supply
A variable 0..30V power supply for max 20ampers! See how to handle all the power and build your own reliable lab power supply.
Mains hum sensor – detect the power lines inside walls
Detect the power lines route inside walls with this simple Mains Hum sensor
CdS Photosensitive Vacuum tubes
A collection of a few NOS photosensitive vacuum tubes.
ATMega8 LCD Game
Create a simple game board and write a little software game for your ATMega8 LCD board.
First Atmega8 bot – (Arduino board)
An article about a differential Arduino robot by Rodrigo Nascimento Hernandez
ATmega8 and Hall Sensor A1302
Atmega8 and an A1302 Hall Sensor for sensing the magnetic fields in close proximity.
High Voltage Power supplies
An article on various high voltage sources. Includes schematics, construction details, high resolution images and videos.
ARA – differential robot platform
A new differential robot platform, with strong gear motors and low power consumption.
Atmega8 with Bluetooth radio module
Add Bluetooth functionality to your microcontroller project (atmega8).