A digital counter using CD4026 for fast event counting as those from Geiger Muller tubes or scintillation probes.
A Longitudinal Excitation Nitrogen Laser design, using a fridge pump for vacuum and N2 from air as lasing medium.
Learn how to get over some limitations in Android Bluetooth SDK to read the Bluetooth COD (Major, minor classes) for a given Bluetooth device.
Avoid the NullPointerException error when using the getSharedPreferences on Android.
Learn how to make an autostartable service on Android OS, using the BOOT_COMPLETED notification.
How to build a socket for a big Russian hydrogen Thyratron tube using copper connectors made out of a pipe.
Using a hydrogen Thyratron tube to switch a Tesla Coil. The Thyratron tube replaces the noisy spark gap.
A very customizable pulse generator built using three 555 timers, to control a relaxation oscillator hydrogen thyratron.
My DIY PFN for a relaxation oscillator using a hydrogen thyratron.
A hydrogen thyratron is a device capable of switching big amounts of energy. The major advantage over other thyratrons is that the deionization time is reduced by using the hydrogen gas, generated in a small reservoir inside the tube, from a metallic Hydride.
Protect your tent’s perimeter from bears, when in the wild. A 20KV pulse generator will inflict painful shocks to anyone touching the perimeter electric fence wire. Not lethal, but very painful, enough to put unwanted visitors on the run.
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.
A simple electronic ballast running on 220V designed to work with up to four small power fluorescent lamps
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.
An easy way to remove a stuck filter from a lens. All you need is a piece of flexible PVC insulated wire.
A timelapse video of the Geothermal power plant in Yanaizu-Nishiyama, Fukushima . Daylight time in 4 minutes.
A CW High voltage supply that produces up to 140000 volts (140KV) . Simple, clean design, without oil, but with high quality multipliers.