Greg's Stuff

Triode-Strapped Curves for the 6BM8 Pentode

Posted on June 20, 2021June 21, 2021

The 6BM8 contains a high mu line-level triode and medium power pentode (Pa ~7W) in one convenient glass envelope. It’s also known for sounding rather good, and was popular in 60’s vintage Japanese amplifiers like the Sansui 250. I thought it might make a nice input and driver tube for an upcoming SET project. This […]

New Tesla Coil Toroid and Video

Posted on December 26, 2013August 1, 2018

Water bore update

Posted on December 10, 2013December 11, 2013

Higher Power Test – 3 Phase DC MOT Tesla Coil

Posted on December 8, 2013August 1, 2018

The problem with cheap MOTs

Posted on December 6, 2013December 6, 2013

Low power initial test for 3-Phase DC supplied Tesla Coil

Posted on December 2, 2013December 8, 2013

After completing my diode sticks, I had to see some sparks. First I lashed together a 10-12H charging reactor using two gapped MOT secondaries in series. The coil was then fired up with a makeshift toroid and the MOT bank wired in parallel, delivering about 11kV to the tank capacitor (through charging reactor). Despite the […]

Triode-Strapped Curves for the 6BM8 Pentode

New Tesla Coil Toroid and Video

Water bore update

Higher Power Test – 3 Phase DC MOT Tesla Coil

The problem with cheap MOTs

Low power initial test for 3-Phase DC supplied Tesla Coil

Completed HV diodes

More coil components

MOT power supply

HV diodes