Blog - Page 7 of 7 - Don Zalmrol

HERMS Beer Brewing Installation

By Laurens Gregoir Thursday 06 June 2013Brewing, Electronicsbeer, brewing, Electronics, hermsNo Comments

Introduction HERMS stands for Heat Exchanged Recirculating Mash System. The biggest project to date that I've designed & build with my father.We are both fond of home brewing and to take up to the next level, we've created a HERMS installation that would allow us to make beer in larger…

12AU7-6CG7 Headphone amplifier

By Laurens Gregoir Monday 26 December 2011Electronics12AU7, 6CG7, Amplifier, Electronics, Headphone, Headphone Amplifier, OTL, ValvesNo Comments

About This is my DIY build headset class-A tube amplifier that uses an OTL (Output Transformer Less) and MU follower design. The amplification is around 25dB with the 6CG7 valves, but you can also 6FQ7 for a little higher amplification. The downside of this is however that 6FQ7 doesn't have…

MGB Roadster

By Laurens Gregoir Sunday 20 June 2010CarsBritish Leyland, Car, MGBNo Comments

This is my MGB Roadster Mark III from 1975. This version was made for the American market, but because many of the features where liked by European continent as well, it became quite popular. One of it differences were the improved heater, better lighting, LHD. To comply with the lighting, British…