Welcome to EZ260! This site is HEAVILY under construction an I’m just getting it set up. This site will have complete projects that I have done including schematics and a gallery of images showing what I have done. Feel free to comment and ask questions about anything of interest.
Been a while since I posted on this subject. I have had the PCB fabricated and assembled one BCD controller. It tool a long time to solder in all the parts, but eventually it got built. After some initial testing of the PCB I found that I had messed up ONE circuit, the one […]
7 Segment decoder full truth table. Note that RBI’ segment decoders are exactly the same except in the A=B=C=D=0 condition Here is my original truth table for the encoder. It features 7 segmenmt decoding of a BCD input from 0-9. It also features Ripple Blanking input and output much like the standard TTL Decoders of […]
Here is the start of the 7 Segment BCD decoder logic. The idea is to make a generic board that can decode BCD data and display like a LED Digit might. This is similar to the 7447 (or many variants). This post will show the general Relay based logic that I will be using. AND, […]
Ok, this has nothing to do with Tube audio, but I don’t have any other place that might be a good spot to put this project. Years ago at Disneyland they had a hall sponsored by the Bell System. It featured 360 Vision where you could watch a movie with a 360 degree screen. They […]
Well even though I have not yet finished the last tube amplifier I felt compelled to finish a small project that was on the drawing board for a while. The EZ215. This is a stereo amplifier with the expected output of 2 channels at 15 watts each. The amplifier is based a bit on the […]
This was my first real tube from scratch project. This was based on the Grommes EZ260A amplifier but done EZ style, that is done with a PCB for ‘EZ’ assembly. This is a great sounding amplifier and was a fun project.
Here is a 6SL7 and 6V6 ‘Mini-Monoblock’ amplifier. This puts out close to 10 watts and sounds awesome. I currently use this on a daily basis for my computers sound system.
The EZLoad Project is a versatile high power dummy load for testing high power audio amplifiers. It’s a simple and useful project!
If you are one that sets the bias on your multi-tubed amplifer the Bias Buddy is for you.