Friday, November 4, 2022

Building a 5W tube amp Fender Champ AA764 model copy

 It is a fender AA764 (silver face) copy, with some mods: 


- Solid state rectifier (FRED diodes)
- Standby switch
- NFB pot and switch
- Two Fat switches
- One Bright and treble tone cap switch
- Master Volume
- Coupling cap value 6x switch (before the master vol pot)
- 6V6 Tung-Sol and 12AX7 Tung-Sol
- Orange drop capacitors
- EL84 paralell tube socket option (not tested). * Using one or another (6V6 or EL84)
- Presence switchable control
- Mid control
- TMB turn-off switch
- GB128 speaker

** AA764 is a 5F1 with TMB tone control and a little diferent NFB.



champ - aa764


Pictures:


champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764


champ - AA764

champ - AA764

champ - AA764

champ - AA764

champ - AA764





Optional EL84 socket:


EL84 vs 6V6






Sunday, December 5, 2021

Rhythmic values of notes

 

An attempt to understand and visualize rhythm notation...  

musical notation

musical notation
musical notation

 

* M -> Metronome click



Saturday, November 21, 2020

Vintage electronic magazines

Very good and easy vintage magazines about basic electronic



Hello friends, for the people in portuguese language, who are interested in electronic, and wishes it in a simple language, here it is, a periodic brazilian magazine of the 80's. Thanks to the professor Bêda Marques.


Click below:

https://datassette.org/revistas/be-ba-da-eletronica


Old retro magazines:

Electronic Magazines

Old RIP projects:

Eletronic boards