yefj
Advanced Member level 5
Hello, i have a QPA2575 amplifier shown bellow , there are two connections of Vd and two connections of Vg .
Vg_top and Vg buttom are connected together on the same voltage,so id Vd.
I need to tune this amplifier by controlling the bias point ,so we get quecent current of
I read about a method where we ned to connect a potentimeter in parralel to VD and connect it to ground and measure the current .
1.what potentiometer do you reccoment to use for this purpose?
2.looking at the layout ,where do you reccomend me to put the potentiometer so i will be able to measure the current going into the amplifier?
Thanks.
Vg_top and Vg buttom are connected together on the same voltage,so id Vd.
I need to tune this amplifier by controlling the bias point ,so we get quecent current of
I read about a method where we ned to connect a potentimeter in parralel to VD and connect it to ground and measure the current .
1.what potentiometer do you reccoment to use for this purpose?
2.looking at the layout ,where do you reccomend me to put the potentiometer so i will be able to measure the current going into the amplifier?
Thanks.