I like single supply. I use diff pair in feedback and current limit protection. This design reminds me of my old Lafayette 30 watt in '70's. Output stage failed a fe times.
The purpose is to set the output DC voltage before the output cap such that the amp clip symmetricaly.
To make mesurements connect a 1k resistance fom VOUT to GND, otherwise the output capacitor will never be charged.
To make mesurements connect a 1k resistance fom VOUT to GND, otherwise the output capacitor will never be charged.
Boa noite a todos.
Estou interessado em montar o AX6 original devido à simplicidade, componentes, acessíveis, etc.
O esquema original com fonte de alimentação unipolar, parou na V 1.6 ?
Estou interessado em montar o AX6 original devido à simplicidade, componentes, acessíveis, etc.
O esquema original com fonte de alimentação unipolar, parou na V 1.6 ?
Please post in English.
Translation:
Good evening everyone.I am interested in assembling the original AX6 due to its simplicity, components, accessibility, etc.
The original scheme with unipolar power supply, stopped at V 1.6?
What is the minimum and maximum DC voltage and current A for the diagram in the first post?
Thanks.
Thanks.
Hi julian
when you read the thread a little bit you will see that the voltage is mostly depending what you adjust the PSUR10 power supply pcb. read from post 800.
this supply pcb is with a small change = change trimm pot (member avtech did some investigation). able to adjust the voltages from 29V-46V
so at single supply you have between 29V overall voltage for the complete swing. you have to set up the DC point as goo as possible to the mid point of this voltage.
if you have a bigger heat sink then you can yus about 50-65 volt rail.
current is mostly 50mA up to 150mA if i remember right.
please read also a other version of LKA - he did here a modified version of the Retro amp. more components put very good values.
personally i want to build this easy amp...but it s in my looong list
;-)
chris
when you read the thread a little bit you will see that the voltage is mostly depending what you adjust the PSUR10 power supply pcb. read from post 800.
this supply pcb is with a small change = change trimm pot (member avtech did some investigation). able to adjust the voltages from 29V-46V
so at single supply you have between 29V overall voltage for the complete swing. you have to set up the DC point as goo as possible to the mid point of this voltage.
if you have a bigger heat sink then you can yus about 50-65 volt rail.
current is mostly 50mA up to 150mA if i remember right.
please read also a other version of LKA - he did here a modified version of the Retro amp. more components put very good values.
personally i want to build this easy amp...but it s in my looong list
;-)
chris